POLLUTION TRANSPORT THROUGH OPENINGS BASED ON COUPLED INDOOR AND OUTDOOR INTERACTIONS
Increasing CO emissions particularly from urban traffic
are a continued concern for building standards and
regulations. Researchers have attempted to address this
problem by using CFD simulation to simulate the
pollution dispersion in an area. Simulation results help
policy makers create best solutions. However, much of
this valuable research underestimates the impact of
building height on street level pollution distribution,
particularly in very high buildings (more than 100 m).
This paper reports results from one extremely tall
building (250 m) case in a high density urban area that
exhibits a counterintuitive distribution of pollution.
Using a coupled natural ventilation model, 3D
incompressible turbulent flow and mass transfer
problems of the skyscraper is solved with SST k-
turbulent model in ANSYS Fluent. Openings are
created on the exterior walls of the target building.
Findings show that indoor air speed increases with
increased outdoor wind speed with high speeds
observed near openings. Additionally, CO does not
flow into the skyscraper due to pressure distribution.
These results suggest the need to continue exploring
how building height and building surroundings may
influence pollution distribution in urban areas.
Architecture Institute of Japan. Guidebook for Practical Applications of CFD to Pedestrian Wind Environment around Buildings. Retrieved 3 20, 2015, from Architectural Institute of Japan: http://www.aij.or.jp/jpn/publish/cfdguide/index_e.htm
Department of Energy. Commercial Reference Buildings. Retrieved 3 20, 2015, from U.S. Department of Energy: http://energy.gov/eere/buildings/commercialreference-buildings
Elliott, Martin A, Gerge J Nebel, and Fred G Rounds. 1955. “The Composition of Exhaust Gases from Diesel, Gasoline and Propane Powered Motor Coaches.” Journal of the Air Pollution Control Association 5 (2). Taylor & Francis: 103–8.
Federal Highway Administration, U. (2014, October 15). Lane Width. Retrieved 4 15, 2015, from U.S. Department of Transportation: http://safety.fhwa.dot.gov/geometric/pubs/mitigationstrategies/chapter3/3_lanewidth.cfm
Ramponi, Rubina, and B Blocken. 2012. “CFD Simulation of Cross-Ventilation for a Generic Isolated Building: Impact of Computational Parameters.” Building and Environment 53. Elsevier: 34–48.
Tominaga, Yoshihide, Akashi Mochida, Ryuichiro Yoshie, Hiroto Kataoka, Tsuyoshi Nozu, Masaru Yoshikawa, and Taichi Shirasawa. 2008. “AIJ Guidelines for Practical Applications of CFD to Pedestrian Wind Environment around Buildings.” Journal of Wind Engineering and Industrial Aerodynamics 96 (10). Elsevier: 1749–61.
Uhrner, U, S von Lӧwis, H Vehkamäki, B Wehner, S Bräsel, M Hermann, F Stratmann, M Kulmala, and A Wiedensohler. 2007. “Dilution and Aerosol Dynamics within a Diesel Car Exhaust plume—CFD Simulations of on-Road Measurement Conditions.” Atmospheric Environment 41 (35). Elsevier: 7440–61.
Yang, Jing-Shuai, Jing-Min Lei, Juan Wang, and ShaoHuiPi. 2014. “Comfortable Speed and CarFollowingDistance on Urban Flat and Straight Road.” Bridges 10: 9780784412442–085.
Yang, Fang, Yanming Kang, Yongwei Gao and Ke Zhong, 2015. Numerical simulations of the effect of outdoor pollutants on indoor air quality of buildings next to a street canyon. Building and Environment. B.m.: Elsevier.
Yoshie, R, A Mochida, Y Tominaga, H Kataoka, K Harimoto, T Nozu, and T Shirasawa. 2007. “Cooperative Project for CFD Prediction of Pedestrian Wind Environment in the Architectural Institute of Japan.” Journal of Wind Engineering and Industrial Aerodynamics 95 (9). Elsevier: 1551–78.
Zheming Tong, Yujiao Chen, Ali Malkawi, Gary Adamkiewicz, John D. Spengler. 2016. “Quantifying the impact of traffic-related air pollution on the indoor air quality of a naturally ventilated building.” Environment International Volumes 89:138-146.
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