ONGOING RESEARCH ACTIVITIES


Sustainable Building

Protocol of Measurement of On-Site Performance of Green Buildings (ASHRAE)

Field Performance Evaluation Method for Green Building – Green Building Assessment Method

A Methodology for Categorizing Vernacular Architecture and Assessing Energy Performance (Lindberg Foundation and EEF)

Heat Transfer Mechanisms in Breathing Wall Systems (ASHRAE)

Assess and Implementation Natural and Hybrid Ventilation Models in Whole-Building Energy Simulations (ASHRAE)

Affordable House Project (ICAST)

Biomimicry Principles and Implications for Building Design

Ecological Impact of Architectural Material Usage

Green Building Designs for Boulder, Denver, Commerce City (EPA, CU outreach, etc.)

Develop an Integrated and Intelligent Sustainable Building Design Tool with Passive Building Technologies Focus

Modeling, Design and Optimization of Double Skin Faηade Systems

Other areas of interest:

Breathing Wall and System

Natural Ventilation + Fire Safety

Hybrid Vent (BIPV+DSF) (solar-powered ventilation)

Curtain Wall Design Guides

Smart Architectural Design Tool

Application of Ancient Technologies (Weather-Based Design)

 

Environmental Study

Inverse Modeling Method for Indoor Pollutant Tracking (ASHRAE)

Fast Simulation Method for Indoor and Environmental Study (ASHRAE)

Identification, Classification and Correlation of Ultrafine Indoor Airborne Particulate Matter with Outdoor Values (ASHRAE)

Micro-climate Design and Optimization (CSC)

Influence of Fire on Building Structure in High-Tech Buildings

Thermal and Energy Performance of Task/Ambient Conditioning Systems (ASHRAE)

Other areas of interest:

Urban Pollutant Source Identification

Nano-Particle Indoor Transport, Fate and Health Impact

Simulation of Dispersed Two-phase (Air + Particle) Flow in and around Buildings

Development of Real-Time Airflow Simulators

Dispersion and Inter-Infection of Virus from Breath and Cough

Implication of Nano-Particle on Human Health

Indoor Environmental Challenges in Public Vehicles (Air, Water, Ground)

 

Renewable Energy and Developing Countries

Biomass Technology and Risk Factor Analysis for Rural China (WHO and NSF)

Energy Investigation for Large Commercial Buildings in China (NREL and DOE)

Thermal Storage and Co-Generation Technologies

Other areas of interest:

Biomass Energy Technology and Policy Comparison between Developed and Developing Countries

 

Building Systems

The Correlation between HVAC System Pressure Drop and Energy Savings (NADCA)

High Efficient but Low Cost Micro-Channel Heat Exchanger Technologies (Industry and ASHRAE)

Low Grade Geothermal Systems for Buildings (Department of the Interior, Division of Energy and Mineral Development)

Ventilation of Crawl-Space (Industry)

Personalized Ventilation Systems (ASHRAE)

Other areas of interest:

Buildings and Systems under Extreme Conditions (Dust, Fire, Hurricane and Flood)

Buildings Systems for Mission Critical Spaces (Hospital, Data Center etc.)

 

 

COMPLETED RESEARCH ROJECTS


Integration of Building Energy Simulation (ES) Tools with CFD
- Sponsored by US Department of Energy (DOE) and collaborated with Laurence Berkeley National Laboratory (LBNL), 2000–2002

CFD Modeling and Optimization of Ventilation System in the Brant Motor Sports (BMS) Enclosed NASCAR Racetrack
- Sponsored by Baker and Associates, Inc., 2000

Sustainable Housing for China: Beijing, Shanghai, Shenzhen

- Sponsored by the Alliance for Global Sustainability and the Kann Rasmussen Foundation, 2000

Protecting Buildings from Chemical and Biological Agent Attacks – Prediction and Control

- Collaborated with Draper Laboratory, United Technology Research Center -Carrier, Harvard School of Public Health, 1999–2000

Development of Intelligent Building Design Tools

- Sponsored by National Science Foundation and ASHRAE, 1999

CFD Multi-Block Algorithm and Parallel Computation Techniques

- Sponsored by Tsinghua Research Funding, 1997–1999

Numerical Investigation of Wing-Body Junction Flows

- Sponsored by the National Natural Science Foundation (NSF) of China and the National Climbing Project of China, 1997-1998

Turbulence Model Development for 3-Dimensional Turbulent Shear Flow and Boundary Layer Problems

- Sponsored by the National Natural Science Foundation (NSF) of China and the National Climbing Project of China, 1996–1998

Experimental and Numerical Study of the Effects of Cross-Wind on the Performance of Natural-Draft Dry-Cooling Towers

- Sponsored by Electric Power Bureau of Northern China, the National Natural Science Foundation (NSF) of China and the National Climbing Project of China, 1994–1999

 

 

PUBLICATIONS (* denotes student and post-doc co-authors of Dr. Zhai)


2013 Publications

1.      Xue Y*, Zhai Z, and Chen Q. 2013. Inverse Prediction and Optimization of Flow Control Conditions for Confined Spaces using a CFD-Based Genetic Algorithm. Building and Environment. Accepted.

2.      Denkenberger D*, Brandemuehl M, Pearce J, and Zhai Z. 2013. High Effectiveness, Low-Cost Microchannel Expanded Heat Exchanger: Design and Experimental Results. The ASME Journal of Power and Energy. Accepted.

3.      McNeill J*, Hertzberg J, Zhai Z. 2013. Experimental Investigation of Operating Room Air Distribution in a Full-Scale Laboratory Chamber Using Particle Image Velocimetry and Flow Visualization. Journal of Flow Control, Measurement & Visualization. Accepted.

4.      Duanmu L, Wang Z, Li X, and Zhai Z. 2013. A Simplified Method to Predict Hourly Building Cooling Load for Urban Energy Planning. Energy and Buildings. Accepted.

5.      Sleiti A, Zhai Z, and Idem S. 2013. Computational Fluid Dynamics to Predict Duct Fitting Losses: Challenges and Opportunities. HVAC&R Research. Accepted. 

6.      Bendewald M* and Zhai Z. 2013. Using Carrying Capacity as a Baseline for Building Sustainability Assessment. Habitat International Journal, 37: 22–32.

7.      Weber J, Gao W, and Zhai Z. 2013. Case Study: Small-Scale Hybrid Integrated Renewable Energy System (HI-RES) -Emergency Mobile Backup Power Generation Station. The IEEE Fifth Annual Green Technologies Conference, April 4-5, 2013, Denver, Colorado, US.

8.      Xue Y*, Zhai Z, and Chen Q. 2013. Fundamentals and Implementation of Coupling CFD with Genetic Algorithm for Indoor Environment Applications. The CLIMA 2013 Congress, June 16-19, 2013, Prague, Czech Republic.

9.      Zhai Z and Slowinski R*. 2013. Investigation on Thermal Performance of Ventilated Wall in Winter Conditions, The CLIMA 2013 Congress, June 16-19, 2013, Prague, Czech Republic.

2012 Publications

1.      Mcneill J* and Zhai Z. 2012. Field Measurements of Thermal Conditions during Surgical Procedures for the Development of CFD Boundary Conditions. ASHRAE Transactions.

2.      Wang H* and Zhai Z. 2012. Application of Coarse Grid CFD on Indoor Environment Modeling: Optimizing the Trade-off between Grid Resolution and Simulation Accuracy. HVAC&R Research, DOI: 10.1080/10789669.2012. 688012.

3.      Hermansen KA* and Zhai Z. 2012. The Development of Simplified Rack Boundary Conditions for Numerical Data Center Models (SA-12-009). ASHRAE Transactions, TRNS-00235-2011.

4.      McNeill J* and Zhai Z. 2012. Critical Review on Hospital Surgical Room and Mechanical System Designs. The World Review of Science, Technology and Sustainable Development, 10: 5-16.

5.      Zhai Z, Watch D, and Vernon W. 2012. Editorial: The Green Wave in Healthcare and Bio-Research Buildings. The World Review of Science, Technology and Sustainable Development, 10: 2-4.

6.      Wang H* and Zhai Z. 2012. Analyzing Grid-Independency and Numerical Viscosity of Computational Fluid Dynamics for Indoor Environment Applications. Building and Environment, 52: 107–118.

7.      Wu W*, Zhai Z, Zhang G, Nielsen PV. 2012. Evaluation of Methods for Determining Air Exchange Rate in a Naturally Ventilated Dairy Cattle Building with Large Openings Using Computational Fluid Dynamics (CFD). Atmospheric Environment, 63: 179-188.

8.      Johnson MH*, Zhai Z and Krarti M. 2012. Performance Evaluation of Network Airflow Models for Natural Ventilation. HVAC&R Research, 18(3): 349-365.

9.      Zhai Z, Liu X, Wang H, Li Y, Liu J. 2012. Experimental Verification of Tracking Algorithm for Dynamically-Releasing Single Indoor Contaminant. Building Simulation: An International Journal, 5(1): 5-14.

10.   Zhai Z and Metzger ID*. 2012. Taguchi-Method-Based CFD Study and Optimization of Personalised Ventilation Systems. Indoor and Built Environment, 21(5): 690–702.

11.   Wang H*, Zhai Z, Li Y, Liu X*. 2012. Identifying Index (Source) Patient Source Location of SARS Transmission in a Hospital Ward. HVAC&R Research, 18(4): 616-625.

12.   Herrmann LA*, Zhai Z, and Deru M. 2012. Investigating the Energy Saving Potential of Chinese Commercial Building Benchmark Models for Extreme Climate Regions. The Second International Conference on Building Energy and Environment (COBEE12), Aug 1-4, 2012, Boulder, Colorado, US.

13.   Wilson EJH*, McNeil J*, Zhai Z, and Moncef Krarti. 2012. Energy Savings from Cleaning Constant Air Volume HVAC Systems. The Second International Conference on Building Energy and Environment (COBEE12), Aug 1-4, 2012, Boulder, Colorado, US.

14.   Tong Y*, Zhai Z, Li X*, and Su R. 2012. Theoretical and Experimental Studies on Natural Ventilation in Urban Road Tunnels with Multi-Roof Openings. The Second International Conference on Building Energy and Environment (COBEE12), Aug 1-4, 2012, Boulder, Colorado, US.

15.   Wang H*, Zhai Z and Xiang Liu*. 2012. Simplify Turbulence Modeling in Indoor Environment Study by Using Coarse grid. The Second International Conference on Building Energy and Environment (COBEE12), Aug 1-4, 2012, Boulder, Colorado, US.

2011 Publications

1.      Wang J*, Jing Y, Zhang C, and Zhai Z. 2011. Performance Comparison of Combined Cooling Heating and Power System in Different Operation Modes. Applied Energy, 88(12): 4621–4631.

2.      Wang J*, Zhai Z, Jing Y, Zhang X, and Zhang C. 2011. Sensitivity Analysis of Optimal Model on Building Cooling Heating and Power System. Applied Energy, 88(12): 5143–5152.

3.      Zhai Z, Liu X*, Wang H*, Li Y, and Liu J. 2011. Experimental Verification of Tracking Algorithm for Dynamically-Releasing Single Indoor Contaminant. Building Simulation: An International Journal, pp. 1-10. doi:10.1007/s12273-011-0041-8.

4.      Zhai Z, LeClaire N, Bendewald M*. 2011. Deep Retrofit of Commercial Buildings: A Key Pathway Towards Low Carbon Cities. Carbon Management, 2(4): 425-430.

5.      Zhai Z, Johnson MH*, Krarti M. 2011. Assessment of Natural and Hybrid Ventilation Models in Whole-Building Energy Simulations. Energy and Building, 43(9):2251-2261.

6.      Wang J*, Zhai Z, Jing Y, Zhang C. 2011. Influence Analysis of Building Types and Climate Zones on Energetic, Economic and Environmental Performances of BCHP Systems. Applied Energy, 88: 3097–3112.

7.      Chen Z*, Krarti M, Zhai Z, Meng Q, Zhao L. 2011. Sensitive Analysis of Landscaping Effects on Outdoor Thermal Environment in a Residential Community of Hot-Humid Area in China. The seventh International Conference on Urban Climate, 29 June - 3 July, 2009, Yokohama, Japan.

8.      Mcneill J*, Hertzberg J, Zhai Z. 2011. Buoyancy Driven Acceleration in a Hospital Operating Room Indoor Environment. The DFD11 Meeting of The American Physical Society, Nov 20-22, 2011. Baltimore, MD, US.

9.      Zhai Z and Hermansen K.A. 2011. The Development of Simplified Rack Boundary Conditions for Numerical Data Center Models. Final Report for Project 1487-TRP to ASHRAE, 130 pages, Dec 2011.

10.   Zhai Z and Wang H. 2011. Optimizing the Trade Off between Grid Resolution and Simulation Accuracy: Coarse Grid CFD Modeling. Final Report for Project 1418-TRP to ASHRAE, 159 pages, Oct 2011.

11.   Sleiti A and Zhai Z. 2011. CFD Shootout Contest – Prediction of Duct Fitting Losses. Final Report for Project 1493-TRP to ASHRAE, 29 pages, Nov, 2011.

2010 Publications

1.      Wang J*, Zhai Z, Jing Y, Zhang C. 2010. Particle Swarm Optimization for Redundant Building Cooling Heating and Power System. Applied Energy, 87(12): 3668-3679.

2.      Wang J*, Zhai Z, Zhang C, Jing Y. 2010. Environmental Impact Analysis of BCHP System in Different Climate Zones in China. Energy, 35(10): 4208-4216.

3.      Wang J*, Zhai Z, Jing Y, Zhang C. 2010. Optimization Design of BCHP System to Maximize to Save Energy and Reduce Environmental Impact. Energy, 35(8): 3388-3398.

4.      Zhai Z and Previtali J*. 2010. Ancient Vernacular Architecture: Characteristics Categorization and Energy Performance Evaluation. Energy and Buildings, 42(3): 357-365.

5.      Liu JJ, Zhang TF and Zhai Z. 2010. Considering Building Energy from Environmental Perspective. Energy and Buildings, 42(1): 1.

6.      Herrmann L*, Zhai Z, Deru M, Chen Z. 2010, Evaluating Energy Performance and Improvement Potential of China Office Buildings in the Hot Humid Climate against US Benchmarks. 2010 Purdue Compressor Engineering, Refrigeration and Air Conditioning and High Performance Buildings Conferences.

7.      Wang H*, Zhai Z, Li Y, Liu X*. 2010. Identifying Sources of SARS Transmission in a Hospital Ward. IAQ2010.

8.      Liu JJ, Zhang TF and Zhai Z (Editors). 2010. Special Issue for International Conference on Building Energy and Environment (COBEE 2008). Energy and Buildings, 42(1): 1-146.

9.      Zhai Z, Brandemuehl M, et al. 2010. Building-Integrated Photovoltaic/Thermal Collector Panel Design and Test. Final Report for ASHRAE Senior Design Project, 49 pages, May 2010.

10.   Zhai Z, Krarti M, and Johnson MH. 2010. Assess and Implement Natural and Hybrid Ventilation Models in Whole-Building Energy Simulations. Final Report for Project 1456-TRP to ASHRAE, 195 pages, June 2010.

2009 Publications

1.      Corbin CD* and Zhai Z. 2009. Experimental and Numerical Investigation on Thermal and Electrical Performance of a Building Integrated Photovoltaic-Thermal Collector System. Energy and Buildings, 42: 76-82.

2.      Zhai Z, Liu J, and Zhang T. 2009. Editorial: Special Issue for 2008 International Conference on Building Energy and Environment (COBEE). Building and Environment, 44(11): 2201.

3.      Liu X* and Zhai Z. 2009. Protecting a Whole Building from Critical Indoor Contamination with Optimal Sensor Network Design and Source Identification Methods. Building and Environment, 44(11): 2276-2283.

4.      Liu X* and Zhai Z. 2009. Prompt Tracking of Indoor Airborne Contaminant Source Location with Probability-Based Inverse Multi-Zone Modeling. Building and Environment, 44(6): 1135–1143.

5.      Koh J* and Zhai Z. 2009. Energy Saving Effect and Economy Feasibility of Office Building with regard to Geometries and Orientations. International Journal of Air-Conditioning and Refrigeration, 17(1): 15-24.

6.      Koh J*, Zhai Z, and Rivas JA*. 2009. Comparative Energy Analysis of VRF and VAV Systems under Cooling Mode. The 3rd International Conference on Energy Sustainability (ES2009), July 19-23, 2009, San Francisco, California, USA.

7.      Zhai Z and Previtali J*. 2009. Energy Performance Assessment of Vernacular Architecture Characteristics. The 5th International Workshop on Energy and Environment of Residential Buildings and the 3rd International Conference on Built Environment and Public Health (EERB-BEPH 2009), May 29-31, 2009, Guilin, Guangxi Province, China.

8.      Jeong K*, Choi SG and Zhai Z. 2009. Analysis of Air Sterilization Systems in the Office. The 11th Roomvent 2009 Conference, May 24-27, 2009, Busan, South Korea.

9.      Zhai Z, Liu J, and Zhang T (Editors). 2009. Special Issue for 2008 International Conference on Building Energy and Environment (COBEE). Building and Environment, 44(11): 2201-2318.

2008 Publications

1.      Erickson BD* and Zhai Z. 2008. Evaluation of Ventilation Code Requirements for Building Crawl Spaces. Building Simulation: An International Journal, 1: 311-325.

2.      Liu X* and Zhai Z. 2008. Location Identification for Indoor Instantaneous Point Contaminant Source by Probability-Based Inverse CFD Modeling. Indoor Air, 18: 2–11.

3.      Koh JY*, Lee HG, and Zhai Z. 2008. System Performance with Variation of Outdoor Unit Layouts at Building Re-entrants. International Journal of Air-Conditioning and Refrigeration, 16(1): 15-21.

4.      Zhai Z and Liu X*. 2008. Principles and Applications of Probability-Based Inverse Modeling Method for Finding Indoor Airborne Contaminant Sources. Building Simulation: An International Journal, 1: 64–71.

5.      Pappas A* and Zhai Z. 2008. Numerical Investigation on Thermal Performance and Correlations of Double Skin Faηade with Buoyancy-Driven Airflow. Energy and Buildings, 40(4): 466-475.

6.      Corbin CD* and Zhai Z. 2008. Numerical Analysis of Performance of A Building Integrated Photovoltaic-Thermal Collector System. The 1st International Conference on Building Energy and Environment (COBEE2008), July 13-16, Dalian, China.

7.      Liu X* and Zhai Z. 2008. An Approach to Interpreting Critical Indoor Pollution Scenes of A Whole Building with Limited Sensor Outputs. The 1st International Conference on Building Energy and Environment (COBEE2008), July 13-16, Dalian, China. 

8.      Chen Z*, Meng Q, Zhao L, Krarti M, Zhai Z. 2008. Experimental Investigation on Outdoor Thermal Comfort in a Residential Community in the Hot-humid Climate of South China. The 1st International Conference on Building Energy and Environment (COBEE2008), July 13-16, Dalian, China. 

9.      Chuixiang Yi*, Russell K. Monson, Dean E. Anderson, Brian Lamb, Andrew A. Turnipseed, Sean P. Burns , Zhiqiang Zhai, Jed P. Sparks, David I. Stannard, Gene Allwine. 2008. Measuring and Modeling NEE over Complex Terrain. International Symposium on CO2 Flux Monitoring, December 15-19, Sitou, Taiwan

10.   Liu J, Zhang T, and Zhai Z (Editors). 2008. Proceedings of The First International Conference on Building Energy and Environment (COBEE2008), Volume I, II, III, 2365 Pages. ISBN 978-0-9816881-6-9, 978-0-9816881-7-6, 978-0-9816881-8-3, and 978-0-9816881-5-2 (CD).

11.   Zhai Z and Previtali J. 2008. Applying Ancient Building Technologies to Design Energy Efficient Buildings – Modern Implications of Vernacular Passive Building Technologies. Full Technical Report to The Charles A. and Anne Morrow Lindbergh Foundation, 125 pages.

12.   Zhai Z. 2008. Applying Ancient Building Technologies to Design Energy Efficient Buildings – Modern Implications of Vernacular Passive Building Technologies. Final Project Report to The Charles A. and Anne Morrow Lindbergh Foundation, 12 pages.

13.   Miller SL, Facciola N, Toohey D, and Zhai Z. 2008. Identification, Classification, and Correlation of Ultrafine Indoor Airborne Particulate Matter with Outdoor Values. Final Project Report (1281RP) to American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc. (ASHRAE), 177 pages.

2007 Publications

1.      Liu X* and Zhai Z. 2007. Inverse Modeling Methods for Indoor Airborne Pollutant Tracking: Literature Review and Fundamentals. Indoor Air, 17: 419–438.

2.      Zhang Z, Zhang W, Zhai Z, and Chen Q. 2007. Evaluation of Various Turbulence Models in Predicting Airflow and Turbulence in Enclosed Environments by CFD: Part-2: Comparison with Experimental Data from Literature. HVAC&R Research, 13(6): 871-886.

3.      Zhai Z, Zhang Z, Zhang W, and Chen Q. 2007. Evaluation of Various Turbulence Models in Predicting Airflow and Turbulence in Enclosed Environments by CFD: Part-1: Summary of Prevalent Turbulence Models. HVAC&R Research, 13(6): 853-870.

4.      Liu X* and Zhai Z. 2007. Identification of Appropriate CFD Models for Simulating Aerosol Particle and Droplet Indoor Transport. Indoor and Built Environment, 16(4): 322-330.

5.      Chen Q, Zhai Z, Wang L. 2007. Computer Modeling of Multiscale Fluid Flow and Heat and Mass Transfer in Engineered Spaces. Journal of Chemical Engineering Science. 62(13): 3580-3588.

6.      Liu X* and Zhai Z et al. 2007. Study of Penetration of Outdoor Fine Particles into a Nonresidential Building with Multi-Zone Simulation. ASHRAE Transactions, 113(2): 163-171.

7.      Liu J, Zhai Z, Pei J, Li Y. 2007. Measurement and Assessment of VOC and Formaldehyde Contamination During Construction Period of a New Museum in China. ASHRAE Transactions, Long Beach, CA.

8.      Zhai Z and Liu JJ 2007. Influences of Building Outdoor Landscaping and Indoor Layout on Natural Ventilation Design. Journal of Harbin Institute of Technology, 2007, Vol.14, Sup.: 318-321.

9.      Liu X* and Zhai Z. 2007. Probability-Based Inverse Multi-Zone Modeling for Indoor Contaminant Location Identification. RoomVent2007, June, Helsinki, Finland.

10.   Zhang Z, Zhai Z and Chen Q. 2007. Evaluation of Various CFD Models in Predicting Room Airflow and Turbulence. RoomVent2007, June, Helsinki, Finland.

11.   Fedrigo C*, Manzan M and Zhai Z. 2007. Structural and Environmental Fire Safety in Atria Design. RoomVent2007, June, Helsinki, Finland.

12.   Spencer J* and Zhai Z. 2007. Fast Evaluation of Sustainable Heating and Cooling Strategies for Solar Homes with Integrated Energy and CFD Modeling. Building Simulation 2007, Sept, Beijing, China.

13.   Liu X* and Zhai Z. 2007. Probability-Based Inverse Modeling Algorithm for Indoor Pollutant Source Tracking. Building Simulation 2007, Sept, Beijing, China.

14.   Fedrigo C*, Manzan M and Zhai Z. 2007. Structural and Environmental Fire Safety in Atria Design. Proceedings of XXV Congresso Nazionale UIT sulla Trasmissione del Calore (25th UIT National Heat Transfer Conference), Trieste, Italy. June 18-20.

15.   McNeill J, Zhai Z, Tan G, Stetz M. 2007. Protocols for Measuring and Reporting the On-site Performance of Buildings Except Low-Rise Residential Buildings. Final Project Report for ASHRAE, 185 pages, August.

2006 Publications

1.      Zhai Z and Fu S. 2006. Improving Cooling Efficiency of Dry-Cooling Towers under Cross-Wind Conditions by Using Wind-Break Methods, Applied Thermal Engineering. 26, 1008-1017.

2.      Zhai Z and Chen Q. 2006. Sensitivity Analysis and Application Guides for Integrated Building Energy and CFD Simulation, Energy and Building, 38, 1060–1068.

3.      Zhai Z. 2006. Applications of CFD in Building Design: Aspects and Trends, Indoor and Built Environment, 15(4): 305-313.

4.      Jeong K*, Zhai Z, Krarti M. 2006. Experimental and Numerical Investigation on Cooling Characteristics of Partition Air Supply System, ASHRAE Transactions, summer.

5.      Liu X* and Zhai Z. 2006. Identification of Appropriate CFD Models for Indoor Particle and Droplet Simulation in Ventilated Spaces, Ventilation 2006, Chicago, US, May 2006. (Invited Speech)

6.      Jeong K*, Krarti M, Zhai Z. 2006. CFD-Based Parametric Analysis on the Performance of Personalized Partition Air Distribution Systems, ASME-Solar 2006, July, Denver, CO.

7.      Zhai Z. 2006. Optimal Building Scales with Low Energy Load in both Hot and Mild Climatic Regions, ASME-Solar 2006, July, Denver, CO.

8.      Pappas A* and Zhai Z. 2006. Energy Simulation of a Double Skin Facade: A Process Using CFD and EnergyPlus, IBPSA-USA SimBuild 2006, August, Cambridge, MA.

9.      Yi C*, Monson RK, Zhai Z, Anderson DE, Turnipseed AA, Burns SP, Lamb B. 2006. Modeling Canopy Turbulent Flow Over Complex Terrain, 17th AFM conference in May 22-25 2006 in San Diego, USA.

10.   Yi C*,  Monson RK. Zhai Z. etc. 2006. Advective Flows and Canopy Turbulence Caused by Topography and Canopy Structure (poster), Flux Measurements in Difficult Conditions, a Specialist Workshop, Boulder, Colorado, USA, 26-28 January 2006.

11.   Boxer E, Passmore K, Zhai Z. 2006. Floor-Based Task-Ambient Conditioning. Final Project Report for ASHRAE Undergraduate Senior Project Grant Program, 43 pages, June.

12.   Zhai Z and Hannigan M. 2006. Design and Build Project for an Optimal Wood-Fired Pottery Kiln. Final Project Report for CU Outreach Committee, 27 pages, June.

2005 Publications

1.      Yi C*, Monson RK, Zhai Z, et al. 2005. Modeling and Measuring the Nighttime Drainage Flow in a High-Elevation, Subalpine Forest with Complex Terrain, Journal of Geophysical Research, Vol. 110, D22303, doi:10.1029/2005JD006282.

2.      Zhai Z and Chen Q. 2005. Performance of Coupled Building Energy and CFD Simulations, Energy and Buildings, 37(4): 333-344.

3.      Zhai Z. 2005. Simulation-Based Ventilation System Study for Chemical Laboratory, Proceedings of Indoor Air 2005, Sept.4-9, Beijing.

4.      Zhai Z. 2005. A New Building Ventilation Effectiveness Index, Proceedings of Indoor Air 2005, Sept.4-9, Beijing.

5.      Courtney A*, Givler T*, Abarr L*, and Zhai Z. 2005. From Warehouse to Sustainable Art Learning Center: The Case for Simulation in Building Renovation, Proceedings of Building Simulation 2005, Aug. Canada.

6.      Yi C*,  R K Monson, Z Zhai, D E Anderson, B Lamb, A A Turnipseed, and S P Burns. 2005. Advective Flows and Canopy Turbulence Caused by Topography and Canopy Structure (abstract and poster), AMERIFLUX Annual Science Team Meeting, Boulder, Colorado, October 18-20, 2005.

2004 Publications

1.      Zhai Z and Chen Q. 2004. Numerical Determination and Treatment of Convective Heat Transfer Coefficient in the Coupled Building Energy and CFD Simulation. Building and Environment, 39, 1001-1009.

2.      Chen Q and Zhai Z. 2004. The Use of CFD Tools for Indoor Environmental Design. Advanced Building Simulation, pp.119-140, Edited by A. Malkawi and G..Augenbroe, Spon Press, New York.

3.      Zhai Z. 2004. Application of CFD for Design of Energy-Efficient and Comfortable Buildings. The 5th International Bi-Annual ASME/JSME Symposium on Computational Technology for Fluid/Thermal/Chemical/Stressed Systems with Industrial Applications, San Diego, CA.

4.      Zhai Z, Gao Y, Chen Q. 2004. Pressure Boundary Conditions in Multi-Zone and CFD Program Coupling. The First IBPSA-USA Conference – SimBuild, Boulder, CO.

2003 Publications

1.      Zhai Z, Srebric J, Chen Q. 2003. Application of CFD to Predict and Control Chemical and Biological Agent Dispersion in Buildings. International Journal of Ventilation, 2(3), 251-264.

2.      Zhai Z and Chen Q. 2003. Solution Characters of Iterative Coupling between Energy Simulation and CFD Programs. Energy and Building, 35(5), 493-505.

3.      Chen Q, Zhai Z. 2003. How Realistic is CFD as a Tool for Indoor Environment Design and Studies without Experiment? Keynote paper, Proceedings of the 4th International Symposium on HVAC, Vol. 1, pp. 62-77, Tsinghua University Press, Beijing, China.

4.      Zhai Z, Chen Q. 2003. Impact of Determination of Convective Heat Transfer on the Coupled Energy and CFD Simulation for Buildings. Proceedings of Building Simulation Conference 2003, Vol. 3, pp. 1467-1474, Eindhoven, Netherlands

5.      Zhai Z. 2003. Developing an Integrated Building Design Tool by Coupling Building Energy Simulation and Computational Fluid Dynamics Programs. Ph.D. Dissertation. 276 pages, Massachusetts Institute of Technology.

2002 Publications

1.      Zhai Z, Chen Q, Haves P and Klems JH. 2002. On Approaches to Couple Energy Simulation and Computational Fluid Dynamics Programs. Building and Environment, 37, 857-864.

2.      Zhai Z, Chen Q, and Scanlon PW. 2002. Design of Ventilation System for An Indoor Auto Racing Complex. ASHRAE Transactions, 108(1), 989-998.

3.      Fu S and Zhai Z. 2002. Application of Multi Block Technique in 3D Complex Turbulent Flow with Multiply-Connected Domain. Chinese Journal of Computational Mechanics, 19(1), 20-25.

4.      Zhai Z and Fu S. 2002. Modeling the Airflow around Cooling Towers with Multi-Block CFD. The 4th International ASME/JSME/KSME Symposium. Canada.

5.      Zhai Z and Chen Q, Scanlon PW. 2002. Venting Contaminants and Fire Smoke from an Indoor Auto-Racing Complex. Proceedings of Indoor Air 2002, the 9th International Conference on Indoor Air Quality and Climate, pp. 830-835, Monterey, California.

6.      Zhai Z and Chen Q. 2002. Developing an Integrated Design Tool: Coupling Energy Simulation and Computational Fluid Dynamics Programs. Final Report for Lawrence Berkeley National Laboratory. 136 pages, Massachusetts Institute of Technology.

2001 Publications

1.      Fu S and Zhai Z. 2001. Numerical Investigation of the Adverse Effect of Wind on the Heat Transfer Performance of Two Natural Draft Cooling Towers in Tandem Arrangement. ACTA MECHANICA SINICA.

2.      Zhai Z, Chen Q, Haves P and Klems JH. 2001. Strategies for Coupling Energy Simulation Programs and Computational Fluid Dynamics Programs. Proceedings of Building Simulation Conference 2001, Vol. 1, pp. 59-66, Rio de Janeiro, Brazil.

2000 Publications

1.      Zhai Z, Hamilton SD, Huang JM, et al. 2000. Integration of Indoor and Outdoor Airflow Study for Natural Ventilation Design Using CFD. Proceedings of the 21st AIVC Annual Conference on Innovations in Ventilation Technology, The Hague, The Netherlands.

2.      Chen Q, Zhai Z. et al. 2000. Building Natural Ventilation Design and Studies. Proceeding of Conference on Thermal Environment of Residential Buildings, Beijing, China

1999 and before Publications

1.      Fu S. and Zhai Z. 1999. Numerical Investigation of Flow around Two Natural Draft Cooling Towers in Tandem Arrangement. Proc.8th Asian Congress of Fluid Mechanics, Dec. 6-10 1999, Shenzhen, China.

2.      Zhai Z, Fu S, Zhu K. 1999. Comparison of Flow Characteristics & Improving-Techniques in Single & Double Dry-Cooling Towers Under Cross-Wind. ACTA AERODYNAMICA SINICA.

3.      Zhai Z, et al. 1999. Wind-Break Techniques for Dry-Cooling Towers. Final Report for Electric Power Bureau of Northern China. 210 pages, Tsinghua University.

4.      Zhai Z. 1999. Study of the Flow around Dry-Cooling Towers. Ph.D. Dissertation. 134 pages, Tsinghua University.

5.      Zhai Z, Zhu K, Fu S. 1998. Experimental Study of Effects of Cross Wind on Flow in Natural-Draft Dry-Cooling Towers. Tsinghua Science And Technology.

6.      Fu S, Zhai Z, et al. 1998. Critical Assessment of Nonlinear Eddy-Viscosity Models in a Recirculating Flow Caused by Square Ribs. The Third International Conference on Fluid Mechanics, China.

7.      Zhai Z, Fu S. 1997. Numerical Simulation of 3-D Flowfield over Surface-mounted Cube. Chinese J. of Computational Mechanics.

8.      Zhai Z, Tang G, Fu S and Zhu K. 1997. The Experiment and Numerical Study of the Influence of Cross-Wind on the Performance of Natural Dry-Cooling Tower. Thermal Power Generation.

9.      Zhai Z, Zhu K, Fu S. 1997. Model Experiment for the Influence of Cross-Wind on the Air Flow Field in Natural Draft Dry-Cooling Tower. J. of Experimental Mechanics.

10.   Fu S, Zhai Z, et al. 1997. Numerical Study of Flow Past a Wing-Body Junction with a Realizable Nonlinear Eddy-Viscosity Model. The Eleventh Symposium on Turbulent Shear Flows, France.

11.   Zhai Z, Fu S. 1996. Numerical Study of Natural Convection of Natural Draft Dry-cooling Tower. J. of Basic Science and Engineering.

12.   Zhai Z. 1995. Model Experiment on Wind-Break Problem of Heler Type Dry-Cooling Towers in Power Plant. Master Thesis. 50 pages, Tsinghua University