EFFECTS OF VENTILATION SETUPS ON AIR FLOW VELOCITY AND TEMPERATURE FIELDS IN BUS PASSENGER COMPARTMENT
DOI:
https://doi.org/10.11113/jt.v77.6867Keywords:
Mixing ventilation setup, displacement ventilation setup, bus passenger compartment, CFD flow simulation, turbulent flow analysisAbstract
A bus compartment requires a good ventilation system to provide sufficient fresh air and a uniform air flow to passengers. This article presents a numerical study using CFD method to investigate the effects of using different ventilation setups on the air flow velocity and temperature distributions inside a passenger bus. Fluent software was used to develop a simplified three-dimensional model of a quarter section of a bus passenger compartment. Turbulent flow simulation was carried out based on a standard k-epsilon model to predict the distributions of air temperature and velocity inside the passenger compartment. The effects of two ventilation setups, namely mixing and displacement ventilations on the air temperature and air flow velocity distribution were also examined. Results of CFD simulations show that the displacement ventilation setup results in more uniform distribution of air flow velocity and air temperature inside the bus passenger compartment.
References
Awbi, H. B. 2003. Ventilation of Buildings. London: Taylor & Francis.
Zhu, S., Srebric, J., Spengler, J. D. & Demokritou, P. 2012. An Advanced Numerical Model for the Assessment of Airborne Transmission of Influenza in Bus Microenvironments. Building and Environment. 47: 67-75.
Zhu, S., Demokritou, P. & Spengler, J. 2010. Experimental and Numerical Investigation of Micro-Environmental Conditions in Public Transportation Buses. Building and Environment. 45(10): 2077-2088.
Xiang, L. & Wang, H. 2011. Numerical Simulation of Pollutant Transport within an Vehicle Cabin. In Advances in Computer Science, Environment, Ecoinformatics, and Education. Springer Berlin Heidelberg.
Bari, S. & Naser, J. 2010. Simulation of Airflow and Pollution Levels Caused By Severe Traffic Jam in a Road Tunnel. Tunnelling and Underground Space Technology. 25(1): 70-77.
Fluent, A. N. S. Y. S. 2012. 14 User Manual. ANSYS Inc. New York.
Downloads
Published
Issue
Section
License
Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.
