I am a Research Officer with the Ventilation and Indoor Air Quality (VIAQ) group of the Construction Research Center at the National Research Council Canada (NRCC) in Ottawa. My research is centred on enhancing building resilience against climate change, in line with the Climate Resilient Built Environment (CRBE) initiative at NRCC. Specifically, I focus on energy-efficient and carbon-neutral solutions to alleviate the repercussions of heatwaves and wildfire smoke on indoor environment quality (IEQ) and occupant health. Furthermore, my endeavours also span to regulate indoor airborne transmission and enhance protection against respiratory infections, especially in the context of COVID-19 and the COVID-19, Ventilation for Control of Respiratory Infections, and Healthy Built Environment initiative at NRCC. Passionate about innovation, I actively seek collaborations with industry stakeholders, universities, and research institutions to unearth and implement pioneering technologies that address both the pressing and potential environmental challenges our buildings face today and in the future.
A Health Canada-sponsored project evaluating particulate matter and VOC emissions from artificial turf has been completed. This video showcases the dynamic test platform with robotic legs designed for wear-and-tear testing of the turfs.
I instructed a workshop of the CONTAM, the most well-known building multizone simulation program, for the eSim 2022 conference, Ottawa, ON, June 21st - 24th held by Carleton University. A word cloud was generated by the keywords in 482 papers found and reviewed in the field with their sizes weighted by frequencies.
Our new study to investigate how heatwave events may affect the local climate and alternate the urban heat island effect has been published on journal Science of The Total Environment. Link>>, Link>>
To investigate the indoor viral transmission, we have launched experimental studies using thermal breathing manikins, air/particle/bioaerosol sampling and flow visualization techniques, e.g. Particle image velocimetry (PIV), Schlieren imaging, Backlight/Dark-field imaging, Shadowgraph, and Smoke Visualization. Some preliminary PIV results are shown here:
Below is a demonstration of the particle movement captured by high-speed camera. (The quality of video has been compressed.)
Sub-scale modelling and Re-independent theory of urban aerodynamics. Link>>, Link>>
Airflow management of indoor growing farms. Link>>
Energy efficiency and ventilation system optimisation of a road tunnel. Link>>, Link>>
On the course BLDG 6651-Fire and Smoke Control in Buildings, I made some animations/movies of the spread of smoke and evacuations in an educational building using Pyrosim & Pathfinder.
During my master's study, I have been involved in multiple CFD-related projects. Here is a demonstration of the airflow around buildings in an urban community for part of my first project.
Chang Shu, Abhishek Gaur, Liangzhu (Leon) Wang, Michael Lacasse, "Evolution of the local climate in Montreal and Ottawa before, during and after a heatwave and the effects on urban heat islands" Science of The Total Environment, (2023): 164497. Access>>
Jiwei Zou, Henry Lu, Chang Shu, Lili Ji, Abhishek Gaur, Liangzhu (Leon) Wang, "Multiscale numerical assessment of urban overheating under climate projections: A review" Urban Climate, (2023): 101551. Access>>
Senwen Yang, Liangzhu (Leon) Wang, Paul Raftery, Michael Ivanovich, Christian Taber, William P. Bahnfleth, Pawel Wargocki, Jovan Pantelic, Jiwei Zou, Mohammad Mortezazadeh Chang Shu, Runzhong Wang, Scott Arnold, "Comparing airborne infectious aerosol exposures in sparsely occupied large spaces utilizing large-diameter ceiling fans" Building and Environment, (2023): 110022. Access>>
Abdelaziz Laouadi, Lili Ji, Chang Shu, Liangzhu (Leon) Wang, Michael Lacasse, "Overheating Risk Analysis in Long-Term Care Homes—Development of Overheating Limit Criteria" Buildings, 13.2 (2023): 390. Access>>
Lili Ji, Chang Shu, Abdelaziz Laouadi, Michael Lacasse, Liangzhu (Leon) Wang, "Quantifying improvement of building and zone level thermal resilience by cooling retrofits against summertime heat events" Building and Environment, (2022): 109914. Access>>
Saeed Rayegan, Chang Shu, Justin Berquist, Jisoo Jeon, Liang (Grace) Zhou, Liangzhu (Leon) Wang, Hamza Mbareche, Patrique Tardif, Hua Ge, "A Review on Indoor Airborne Transmission of COVID-19– Modelling and Mitigation Approaches" Journal of Building Engineering, Available online 26 November 2022, 105599. Access>>
Chang Shu, Abhishek Gaur, Liangzhu (Leon) Wang, Michal Bartko, Abdelaziz Laouadi, Lili Ji, Michael Lacasse, "Added value of convection permitting climate modelling in urban overheating assessments " Building and Environment, Available online 5 October 2021, 108415. Access>>
Lili Ji, Abdelaziz Laouadi, Chang Shu, Abhishek Gaur, Michael Lacasse, Liangzhu (Leon) Wang, "Evaluating Approaches of Selecting Extreme Hot Years for Assessing Building Overheating Conditions during Heatwaves" Energy and Buildings, (2021): 111610. Access>>
Dahai Qi, Senwen Yang, Chang Shu, Xin Zhang, Liangzhu (Leon) Wang, Andreas Athienitis, "An exploratory study on road tunnel with semi-transparent photovoltaic canopy—From energy saving and fire safety perspectives " Building Simulation, 16 September 2021. Access>>
Lili Ji, Abdelaziz Laouadi, Chang Shu, Liangzhu (Leon) Wang, Michael Lacasse, "Evaluation and improvement of the thermoregulatory system for the two-node bioheat model" Energy and Buildings, 15 October 2021, 111235. Access>>
Abhishek Gaur, Michael Lacasse, Marianne Margaret Armstrong, Henry Lu, Chang Shu, Allan Fields, Francisco Salamanca Palou, Yujia Zhang, "Effects of using different urban parametrization schemes and land-cover datasets on the accuracy of WRF model over the City of Ottawa" Urban Climate, 35 (2020): 100737. Access>>
Chang Shu, Liangzhu (Leon) Wang, Mohammad Mortezazadeh, "Dimensional analysis of Reynolds independence and regional critical Reynolds numbers for urban aerodynamics." Journal of Wind Engineering and Industrial Aerodynamics, 203 (2020): 104232. Access>>
Chang Shu, Liangzhu (Leon) Wang, Cheng Zhang, Dahai Qi, "Air Curtain effectiveness rating based on aerodynamics." Building and Environment, 169 (2020): 106582. Access>>
Cheng Zhang, Senwen Yang, Chang Shu, Liangzhu (Leon) Wang, Ted Stathopoulos, "Wind pressure coefficients for buildings with air curtains." Journal of Wind Engineering and Industrial Aerodynamics, 205 (2020): 104265. Access>>
Di Mu, Chang Shu, Naiping Gao, Tong Zhu, "Wind tunnel tests of inter-flat pollutant transmission characteristics in a rectangular multi-storey residential building, part B: Effect of source location." Building and Environment, 114 (2017): 281-292. Access>>
Qiaoxia Yang, Meng Liu, Chang Shu, Daniel Mmereki, Md. Uzzal Hossain, Xiang Zhan, "Impact analysis of Window-wall Ratio on heating and cooling energy consumption of residential buildings in hot summer and cold winter zone in China." Journal of Engineering, 2015 (2015). Access>>
Conferences
Liang (Grace) Zhou, Chang Shu, Justin Berquist, Greg Nilsson, Janet Gaskin, "Impact and benefits of the air cleaning measures implemented in two schools" 43rd AIVC (Air Infiltration and Ventilation Centre) conference "Ventilation, IEQ, and health in sustainable buildings", Copenhagen, Denmark, October 04-05, 2023
Senwen Yang, Dongxue Zhan, Jiwei Zou, Chang Shu, Ted Stathopoulos, Liangzhu (Leon) Wang, "Prediction of the impact of Urban Environment on Building Energy by Artificial Neural Network" 13th International Symposium on Heating, Ventilation, and Air Conditioning (ISHVAC2023), Beijing, China, November 14-16, 2023
Sepehrdad Tahmasebi, Liangzhu (Leon) Wang, Chang Shu, Senwen Yang, "AMCA COVID Guidance for UNDUCTED Fans - Air Curtains" 11th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings (IAQVEC 2023), Tokyo, Japan, May 20-23, 2023
Chang Shu, Abhishek Gaur, Michael Lacasse, Liangzhu (Leon) Wang, "Interaction between the Urban Heat Island effect and the occurrence of Heatwaves: Comparison of Days with and without Heatwaves" 5th International Conference on Building Energy and Environment (COBEE 2022), Montreal, Canada, July 25-29, 2022
Chang Shu, Zihan Xie, Lili Ji, Daniel Baril, Lin Wang, Xuechen Bai, Senwen Yang, Hua Ge, Radu Zmeureanu, Michael Lacasse, Abdelaziz Laouadi, Abhishek Gaur, Liangzhu (Leon) Wang, "Comparing Multiple Overheating Assessment Metrics Using Measured Data" 5th International Conference on Building Energy and Environment (COBEE 2022), Montreal, Canada, July 25-29, 2022
Chang Shu, Liangzhu (Leon) Wang, "Smoke Spreading Simulation of a High-rise Office building based on Evacuation Analysis" 5th International Conference on Building Energy and Environment (COBEE 2022), Montreal, Canada, July 25-29, 2022
Lili Ji, Chang Shu, Abdelaziz Laouadi, Hua Ge, Radu Zmeureanu, Michael Lacasse, Liangzhu (Leon) Wang, "Quantification of building thermal resilience against heatwaves" 5th International Conference on Building Energy and Environment (COBEE 2022), Montreal, Canada, July 25-29, 2022
Lili Ji, Chang Shu, Abdelaziz Laouadi, Abhishek Gaur, Michael Lacasse, Liangzhu (Leon) Wang, "Evaluation and mapping indoor thermal risk of older people residing in long-term care (LTC) buildings to local weather conditions" 5th International Conference on Building Energy and Environment (COBEE 2022), Montreal, Canada, July 25-29, 2022
Chang Shu, Abhishek Gaur, Liangzhu (Leon) Wang, Michal Bartko, Lili Ji, Abdelaziz Laouadi, Michael Lacasse, "Impact of Spatial Distributions of Climate Condition on Building Overheating" REHVA 14th HVAC World Congress (CLIMA 2022), Rotterdam, The Netherlands, May 22-25, 2022
Lili Ji, Chang Shu, Danlin Hou, Abdelaziz Laouadi, Liangzhu (Leon) Wang, Michael Lacasse, "Predicting indoor air temperatures by calibrating building thermal model with coupled airflow networks" REHVA 14th HVAC World Congress (CLIMA 2022), Rotterdam, The Netherlands, May 22-25, 2022
Chang Shu, Abhishek Gaur, Michael Lacasse, Liangzhu (Leon) Wang, "Future projected urban heat island patterns using the Synthesized Representative Urban Effect Preserved (SYRUP) climate dataset" 3rd International Conference on New Horizons in Green Civil Engineering (NHICE-03), Victoria, BC, Canada, April 24-26, 2022
Lili Ji, Abdelaziz Laouadi, Chang Shu, Michael Lacasse, Liangzhu (Leon) Wang, "Quantifying building thermal resilience to summertime heatwaves" 3rd International Conference on New Horizons in Green Civil Engineering (NHICE-03), Victoria, BC, Canada, April 24-26, 2022
Lili Ji, Chang Shu, Abdelaziz Laouadi, Liangzhu (Leon) Wang, Michael Lacasse, "Predicting the thermal sensation of older people by integrating a physiological model with a data-driven method" Indoor Environmental Quality Performance Approaches (IAQ 2020), Athens, Greece, September 13-15, 2021
Chang Shu, Abhishek Gaur, Michal Bartko, Abdelaziz Laouadi, Lili Ji, Michael Lacasse, Liangzhu (Leon) Wang, "Importance of Microscale Climate Simulations in City Scale Overheating Assessments" 8th International Building Physics Conference 2021, Copenhagen, Denmark, August 25-27, 2021
Chang Shu, Abhishek Gaur, Lili Ji, Abdelaziz Laouadi, Michael Lacasse, Liangzhu (Leon) Wang, "Analysis of multiple building overheating assessment metrics for long-term indoor thermal patterns in 12 Canadian cities under climate change" Building Simulation 2021 Conference, Bruges, Belgium, September 1-3, 2021
Zihan Xie, Chang Shu, Ben Zegen Reich, Lin Wang, Daniel Brail, Lili Ji, Senwen Yang, Xuechen Bai, Radu Zmeureanu, Michael Lacasse, Liangzhu (Leon) Wang, Hua Ge, "A field study on summertime overheating of six schools in Montreal Canada" 8th International Building Physics Conference 2021, Copenhagen, Denmark, August 25-27, 2021
Lili Ji, Abdelaziz Laouadi, Chang Shu, Michael Lacasse, Liangzhu (Leon) Wang, "Physiological modeling of thermal responses of the elderly under heat-stressful conditions" Building Simulation 2021 Conference, Bruges, Belgium, September 1-3, 2021
Lili Ji, Abdelaziz Laouadi, Chang Shu, Abhishek Gaur, Michael Lacasse, Liangzhu (Leon) Wang, "Evaluation and improvement of two-node bioheat model for young subjects" 8th International Building Physics Conference 2021, Copenhagen, Denmark, August 25-27, 2021
Danlin Hou, Chang Shu, Lili Ji, Ibrahim Galal Hassan, Liangzhu (Leon) Wang, "Bayesian Calibrating Educational Building Thermal Models to Hourly Indoor Air Temperature: Methodology and Case Study" ASME 2021 Verification and Validation Symposium (VVS2021), Virtual, Online, May 19–20, 2021
Chang Shu, Abhishek Gaur, Lili Ji, Abdelaziz Laouadi, Michael Lacasse, Hua Ge, Radu Zmeureanu, Liangzhu (Leon) Wang, "Building indoor overheating and impact of local extreme heat conditions" 16th Conference of the International Society of Indoor Air Quality & Climate (Indoor Air 2020), Seoul, Korea, November 1-3, 2020
Lili Ji, Abdelaziz Laouadi, Chang Shu, Abhishek Gaur, Michael Lacasse, Liangzhu (Leon) Wang, "A systematic evaluation of indoor overheating interactions with outdoor heat conditions" 16th Conference of the International Society of Indoor Air Quality & Climate (Indoor Air 2020), Seoul, Korea, November 1-3, 2020
Chang Shu, Lili Ji, Lin Wang, Xuechen Bai, Michael Lacasse, Hua Ge, Radu Zmeureanu, Liangzhu (Leon) Wang, "Field survey on indoor overheating in school and hospital buildings in Montréal." 2nd International Conference on New Horizons in Green Civil Engineering (NHICE-02), Victoria, BC, Canada, August 24–26, 2020. Access>>
Liangzhu (Leon) Wang, Chang Shu, Hua Ge, Radu Zmeureanu, Michael Lacasse, Sylvie Leroyer, Stephane Belair, Lili Ji, Xuechen Bai, Lin Wang, Mohammad Dorostkar, Ali Katal, "Assessment of summertime overheating conditions in vulnerable buildings in Montréal." 2nd International Conference on New Horizons in Green Civil Engineering (NHICE-02), Victoria, BC, Canada, August 24–26, 2020. Access>>
Chang Shu, Liangzhu (Leon) Wang, "Revisiting Reynolds independent phenomenon by dimensionless CFD analysis of urban and built environment airflows." 11th International Symposium on Heating Ventilation and Air Conditions (ISHVAC 2019), Harbin, China, July 12-15, 2019.
Liangzhu (Leon) Wang, Chang Shu, "Dimensionless CFD analysis of Reynolds independence and similarity in urban and buit environment airflows." 2019 ASHRAE Annual Conference, Kansas, United States of American, June. 24-25, 2019.
Chang Shu, Cheng Zhang, Dahai Qi, Liangzhu (Leon) Wang, "Novel method relating air curtain aerodynamic performance to its efectiveness." 4th Asian Conference of International Buiding Performance Simulation Association (ASIM 2018), Hong Kong, China, December 3-5, 2018.
Chang Shu, Liangzhu (Leon) Wang, Andreas Athienitis, "Deep learing of a real road tunnel energy demand using recurrent neural networks." 4th Asian Conference of International Buiding Performance Simulation Association (ASIM 2018), Hong Kong, China, December 3-5, 2018.
Chang Shu, Cheng Wang, Jifu Xu, Naiping Gao, "Microclimate modelling of typical land use units with different arrrangements: a case study in Langfang." 8th Asian Conference on Refrigeration and Air Conditioning (ACRA 2016), Taipei, Taiwan, China, May 15-17, 2016.
Books/Chapters
Liangzhu (Leon) Wang, Chang Shu, "Chapter 2: Assessment of the Effect of Urban Heat Island on Buildings." In: Enteria N., Santamouris M., Eicker U. (eds) Urban Heat Island (UHI) Mitigation. Advances in 21st Century Human Settlements. Springer (2021), Singapore, Spinger. Access>>
Conference Presentations
Chang Shu, Abhishek Gaur, Liangzhu (Leon) Wang, Michael Lacasse, "Modeling Outdoor and Indoor Overheating Conditions during an Extreme Overheating Event in the Ottawa–Montreal Region" 101st AMS (American Meteorological Society) Annual Meeting, Virtual, January 10-15, 2021. Access>>
Chang Shu, Abhishek Gaur, Liangzhu (Leon) Wang, Michael Lacasse, "Statistical–dynamical High-Resolution Modeling of the Ottawa–Montreal Regional Climate" 101st AMS (American Meteorological Society) Annual Meeting, Virtual, January 10-15, 2021. Access>>
Retrofits to Improve Resilience of Residential Buildings to Overheating Stress and Wildfire Smoke Exposure Apr. 2023-Present, Principal Investigator. Funding: Climate Resilient Building Environment (CRBE) Initiative at NRCC.
Measuring Contaminat Emissions from Artificial Indoor Sports Turf Apr. 2023-Present, Project Manager. Funding: Health Canada
Review of Design and Operation of Inflatable Sports Domes Apr. 2022-Apr. 2023, Project Manager. Funding: Health Canada
Assessment and Mitigation of Summertime Overheating Conditions in Vulnerable Buildings of Urban Agglomerations Apr. 2019-Apr. 2023, Team Leader. Supervisors: Prof. Liangzhu (Leon) Wang (PI), Prof. Hua Ge (Co-PI), Prof. Radu Zmeureanu (Co-PI). Funding: The Natural Sciences and Engineering Research Council of Canada.
Air Movement and Control Association (AMCA) COVID White Paper on Un-ducted Fans (including air curtains, ceiling and circulating fans) Dec. 2020-Feb. 2021, Research Assistant. Supervisors: Prof. Liangzhu (Leon) Wang. Funding: The Air Management and Control Association (AMCA).
Estimating and Mitigating SARS-CoV-2 Exposure Risk in Mechanically Ventilated Spaces Jan. 2021-Mar. 2021, Research Assistant. Supervisors: Prof. Liangzhu (Leon) Wang. Funding: The Carrier Global.
Air Movement and Control Association (AMCA) Project on Air Curtain Energy Performance and ASHRAE Standards 90.1 Nov. 2017-Nov. 2018, Team Leader. Supervisors: Prof. Liangzhu (Leon) Wang. Funding: The Air Management and Control Association (AMCA), the Berner International, the Mars Air Systems, the Powered Aire, and the Hickman Group.
Energy Efficiency and Deicing of The Road Tunnel in Montreal Feb. 2018-Aug. 2018, Research Assistant. Supervisors: Prof. Liangzhu (Leon) Wang, Prof. Andreas Athienitis (PI). Funding: Ministère des Transports, de la Mobilité durable et de l'Électrification des transports.
Airflow and Thermal Management in a Growing System for Quality Food Crop Production Sep. 2017-Feb. 2018, Team Leader. Supervisors: Prof. Liangzhu (Leon) Wang. Funding: NutraPonics Canada Corporation, The Natural Sciences and Engineering Research Council of Canada.
Study on the Vertical Pollutant Inter-flat Transmission Mechanism of High-rise Residential Buildings Nov. 2014-Jun. 2017, Research Assistant. Supervisors: Prof. Naiping Gao (PI). Funding: The National Science Foundation of China.
Urban Microclimate Study Based on Urban Planning Land Function Units Nov. 2014–Jan. 2016, Team Leader. Supervisors: Prof. Naiping Gao. Funding: ENN Group Co., Ltd.
New Gas Cooktop with Drop-in Sheet Metal Burner Design May. 2016-Jan. 2017, Team Leader. Supervisors: Prof. Naiping Gao. Funding: FOTILE Kitchen Ware Co., Ltd.
Design and Optimize the Air Conditioning of the Passenger Compartments and Heat Exchange of Equipment Compartments on High-speed Train Jan. 2015-Sep. 2015, Team Leader. Supervisors: Prof. Naiping Gao. Funding: CRRC Changchun Railway Vehicles Co., Ltd.
Performance Evaluation on Sand Filters of High-speed Electric Multiple Units (EMUs) Based on Multiphase Flow Analysis Dec. 2014-Jun. 2015, Team Leader. Supervisors: Prof. Naiping Gao. Funding: CSR Sifang Rolling Stock Co., Ltd.
Unidirectional Airflow Design with Underfloor Air Distribution (UFAD) System in Ultra-large Area Clean Room Jun. 2014-Dec. 2014, Research Assistant. Supervisors: Prof. Naiping Gao. Funding: Suzhou Purification Technology Co., Ltd.