Theodore Stathopoulos, PhD
Professor, Building, Civil, and Environmental Engineering
Dr. Stathopoulos received his Civil Engineering Diploma from the National Technical University of Athens, Greece and both his M.Sc. and Ph.D. from the University of Western Ontario. He joined the Centre for Building Studies, Concordia University in 1979. His work in the area of wind engineering and building aerodynamics has received national and international recognition and forms the basis for wind design of low-rise buildings in the 1990, 1995 and 2005 National Building Code of Canada.
He was promoted to the rank of Associate Professor in 1982 and to the rank of Professor in 1987. He has been Associate Director of the Centre for Building Studies for the period 1983-1995. In 1993, he was appointed Associate Dean of the Faculty of Engineering and Computer Science, a position he held until 1998, when he became Director of the Centre for Building Studies for the period 1998-2001.
Since the beginning of 2003, he has been Associate Dean of the School of Graduate Studies, Concordia University. Dr. Stathopoulos has established an excellent teaching record at both the undergraduate and graduate levels and has also been active in the development of educational models. In 1997, he received the Concordia Council on Student Life Teaching Excellence Award and in 2006, the Alumni Award for Excellence in Teaching. He has an outstanding research record with more than 350 publications in refereed journals and conference proceedings. His work in the area of wind engineering and building aerodynamics has received national and international recognition. It forms the basis for wind design of low-rise buildings in the 1980, 1985, 1990, 1995 and 2005 National Building Code of Canada, and it has been partly included in the 1982 American National Wind Standard (later ASCE 7-88, 93, 95, 98, 02, 05) and in other standards as well.
Dr. Stathopoulos has established the Building Aerodynamics Laboratory at the Centre for Building Studies and has developed, in cooperation with Dr. D. Surry of the University of Western Ontario, the so-called pneumatic-averaging technique for the measurement of area-averaged fluctuating wind pressures on buildings. This technique has been used routinely around the world. He received the Best Paper Award for the paper entitled “Wind-Tunnel Studies of Buildings and Structures” published in the ASCE Journal of Aerospace Engineering in 1996. Dr. Stathopoulos' research has been receiving continuously significant support by NSERC (operating, equipment, strategic, discovery, cooperative research and development grants), FCAR, later NATEQ (operating and equipment grants) and several other organizations. Dr. Stathopoulos has participated actively in numerous external bodies including the ASCE Standards Committee of Minimum Design Loads of Buildings and Other Structures. He has been elected America’s Regional Representative in the Executive Board of the International Association for Wind Engineering – IAWE (2003-07); and to the Board of Directors of the American Association for Wind Engineering – AAWE (2003-07). He has served on several ASCE bodies and chaired the Aerodynamics, the Experimental Analysis & Instrumentation, as well as the Wind Effects Committees of ASCE; he is a past member (Chair in 2000-01) and current Advisor of the Executive Committee of the Aerospace Division of ASCE.
He has been invited and keynote speaker, chairman and rapporteur in short courses, national and international conferences taken place in Canada, the U.S.A., Europe, Japan and Australia. He has been consultant to numerous projects on issues related to wind-building interaction. He has acted as expert witness on cases related to wind-building interaction. He also has industrial experience, gained before his engagement in research. He has been honored by the American Association for Wind Engineering and he received the 1997 Engineering Award of the National Hurricane Conference for his “exhaustive studies leading to the adoption of the new ASCE-7 Minimum Design Loads for Buildings and Other Structures which is already leading to safer, more hurricane-resistant construction in many areas”.
He received the ASCE Aerospace Division’s Outstanding Professional Service Award for the year 2004. He has been appointed Editor of the International Journal of Wind Engineering and Industrial Aerodynamics, as well as Editorial Board member of several prestigious journals in his field. Dr. Stathopoulos is a professional engineer registered in Québec, Ontario and in Greece; he is Fellow of the Canadian Academy of Engineering and also Fellow of the American Society of Civil Engineers.
- Wind effects on buildings
- Building aerodynamics
- Wind environment
- Dispersion of pollutants in the urban environment
- Computational wind engineering
- Codification of wind effects
Ongoing research projects
Hatem Alrawashdeh, (Ph.D. student)
EXPERIMENTAL AND COMPUTATIONAL EVALUATION OF WIND LOADS ON SOLAR PANELS ON ROOFS AND ON GROUND
Solar panels are lightweight structures and wind pressures on their surfaces may be critical and may affect their structural integrity. Current wind codes and standards of practice provide emerging design provisions for common configurations of solar panels. Despite the amount of research that has been conducted to enrich the knowledge in wind-induced loads on solar panels, research in this area is still lacking and producing contradictory results. There are still many obstacles to the appropriate wind tunnel testing of these elements - scaling factors and blockage ratios are typical examples. Indeed, in order to fulfill the delicate scaling and instrumentation requirements for solar panel models in atmospheric boundary layer wind tunnels, larger models may be desirable. However, this condition may lead to unreliable wind simulations. Therefore, it is necessary to establish specific guidelines for wind tunnel testing of solar panels to be considered in subsequent experimentation to avoid the present ambiguities across previous studies’ results. Geometric test scaling is considered a key parameter in the simulation and has not yet been investigated adequately. It is then proposed that several wind tunnel experiments will be conducted at different scales (1:200, 1:100, 1:50 etc) in parallel with computational approaches based on CFD techniques. Then, comprehensive parametric experiments will be conducted to yield credible results for codification purposes and guidelines to be used by manufacturers and designers.
Shuai Shao, (Ph.D. student)
WIND PRESSURES ON LOW-RISE BUILDINGS WITH COMPLEX ROOFS
Experimental and computational evaluation of wind pressure loads on buildings with particular emphasis on the effect of different plan view shapes will be carried out in order to provide design recommendations for non-rectangular buildings. Although a large number of studies have now examined low building configurations with rectangular flat roofs, very limited research is available for wind loads on L- or T-shaped roofs of low buildings. It is intended to carry out a series of experiments for a number of configurations to identify common trends and establish the extent for which the rectangular building provisions may be applicable to other geometries. This is a long due research that code committees are very interested and anxious about.
Jianhan Yu, (Ph.D. student)
Murad Doum (M.A.Sc. student)
EFFECTS OF TOPOGRAPHY AND UPSTREAM EXPOSURE CHARACTERIZATION
Reliable description of the upstream exposure is of practical importance for structural and environmental wind engineering. Indeed, accurate estimation of the vertical profile of the mean wind speed, direction and turbulence for the site of interest will lead to more accurate prediction of wind-induced pressures on structures, pollutant transmissions and dispersions, pedestrian level winds and site efficiency for energy production. In spite of this research, little has been achieved on the characteristics and assessment of upstream exposure in terms of terrain roughness. The proposed research will consist of extensive wind tunnel and computational (RANS turbulence models and LES) experiments modeling both homogeneous and inhomogeneous terrains including transition cases. This will be accomplished through scaled morphologies in the atmospheric wind tunnel of Concordia University and CFD approaches. The results will be analyzed by using big data techniques to produce comprehensive models defining upstream exposure in wind design standards.
Wind pressures on buildings under the influence of non-synoptic winds
The evaluation of wind loads on structures has been commonly accomplished considering synoptic winds with the assumption of stationary atmospheric boundary layer. Based on some recent failures, the significance of severe weather extreme events like downbursts, tornadoes and other non-stationary winds was founded. Therefore, recently developed wind engineering facilities can produce downbursts and tornadoes, i.e. wind systems with profiles distinctly different from those of synoptic boundary layers. Results obtained by these facilities will be duplicated by using various velocity profiles and turbulence characteristics in the atmospheric boundary layer wind tunnel of Concordia University in an attempt to investigate the extent of variation in the design wind loads from different sources to withstand the effects of extreme gusts, which are of most interest to structural engineers, in order to take measures and precautions in terms of codifying regulations and guidelines.
Recent research projects
Contribution to Wind Energy Conversion Systems in Urban and Remote Areas
The Effect of Overhang on Wind-driven Rain Wetting for a Mid-rise Building
Multiple-inlet Building Integrated Photovoltaics: Modeling and Design including Wind Effects
Wind Pressures on Flat Roof Edges and Corners of Large Low Buildings
A Comprehensive Numerical Study of the Effects of Adjacent Buildings on Near-Field Pollutant Dispersion
Wind-Induced Torsional Loads on Low- and Medium-Rise Buildings
Wind Effects on the Performance of Solar Collectors on Roofs
Experimental Study of Wind Effects on Unglazed Transpired Collectors
Wind-Induced Pressures on Canopies Attached to the Walls of Low-Rise Buildings
Wind Loads on Solar Panel Systems Attached to Building Roofs
A Comprehensive Experimental Study of the Effects of Adjacent Buildings on Near-Field Pollutant Dispersion
Wind Load Paths on Wood Buildings
Air Infiltration through Revolving Doors
Solar-Assisted Hybrid Ventilation in an Institutional Building
Comprehensive Study of Wind Loads on Parapets
Physical Modeling of the Downwash Effect of Rooftop Structures on Plume Dispersion
Airflow Prediction in Buildings for Natural Ventilation Design: Wind Tunnel Measurements and Simulation
Structural Monitoring and Wind Tunnel Studies of a Low Wooden Building
- ENGR 242: Statics
- ENGR 243: Dynamics
- BLDG 6071: Wind Engineering and Building Aerodynamics
- BLDG 6581: Decision Analysis
- ENCS 8011: Ph.D. Seminar