2007, Volume 9, Issue 11
Strategic Study of CAE >> 2007, Volume 9, Issue 11
Enhace Independent Innovation Ablity of Paper Industry,Construct Innovation System of Paper Technology
1. School of Energy and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China;
2. Shanghai Institute of Appl.Math.and Mech., Shanghai University, Shanghai 200072, China
Next Previous
Abstract
Based on steady state incompressible Reynolds-averaged Navier-Stokes equation, turbulence model, the three-dimension airflow and concentration fields in passenger car are calculated numerically. Regarding passengers as cubes and the exhalant CO2 as representative contaminant respectively, the airflow and concentration distributions are investigated in non-empty state. The results show that existing sew supply modes make the airflow distribution homogeneous except for the ends. Body heat and solar radiation have much influence on airflow and temperature fields. The air distribution in occupied passenger car differs from that in empty one. The heat flux from body heat and solar radiation produces a much big temperature gradient in occupied passenger car. The concentration is low in gangway zone while high in seat zone with crowded passengers. The concentration in middle section is higher than that in end section and contaminant gathers in respiratory region, and the polluted air can´t be exchanged effectively in seat zone, which is disadvantageous to air quality in passenger car.
Keywords
passenger car ; turbulence model ; airflow field ; concentration field ; computational fluid dynamics
Figures
图1
图2
图3
图4
图5
图6
图7
图8
图9
图10
图11
图12
图13
图14
图15
References
[ 1 ] Tohru K.Analysis of vehicle passenger compartment ventilation using experimental and numerical models [ J] .SAE Trans, 1997 , 98 ( 6 ) :392 ~400 link1
[ 2 ] Currle J. Numerical Simulation of the flow in a passenger compartment and evaluation of the thermal comfort of the occupants [ R] .1997.SAE paper 970529
[ 3 ] Lin C H, Lelli M A, Han T, et al, A experimental and computational study of cooling in a simplified GM -10 passenger compartment [ R] .1998.SAE paper 980216
[ 4 ] Mezrhab A, Bouzidi M.Computation of thermal comfort inside a passenger compartment[ J] .Applied Thermal Engereering, 2006 , 26 ( 14 ) :1697 ~1704 link1
[ 5 ] Kazuhiko M.Evaluation and measurement of thermal comfort in the vehicles with a new thermal mannequin [ R ] .1993.SAE paper 931958
[ 6 ] 庄达民,林国华,袁修干.高速列车舱内气流分布的数值模拟[J].铁道学报,2000,22(2):26~30 link1
[ 7 ] 靳谊勇,郁永章.铁路空调客车车内气流组织的数值模拟[J].制冷学报,2002,33(2):30~34 link1
[ 8 ] 王利,陆震,黄兴华.铁路空调硬卧客车室内气流组织的数值模拟[J].上海交通大学学报,2002,36(11):1579~1582 link1
[ 9 ] 陈焕新,张登春.空调硬卧车内人体热舒适性研究[J].铁道学报,2004,26(3):46~50 link1
[10] 胡松涛,斐念强,李郁武.高档软卧车空调送风系统的实验研究与优化[J].暖通空调,2004,34(4):9~13 link1
[11] 连之伟,张桂荣,叶晓江.铁路空调客车气流组织评价[J].上海交通大学学报,2004,38(6):961~966 link1
[12] Chung K C. Three-dimensional analysis of airflow and contaminant particle transport in a partitioned enclosure [ J ] . Building and Environment, 1999 , 34 ( 3 ) : 7 ~17 link1
[13] 陶文铨.数值传热学[M].西安:西安交通大学出版社,2001
[14] 张登春,邹声华,翁培奋.铁路空调硬卧车内气流分布的数值模拟[J].应用力学学报,2006,23(1):132~136 link1
[15] 陈焕新,杨培志,张登春.列车车厢中CO2浓度控制系统仿真[J].湘潭矿业学院学报,2002,17(3):75~77 link1
[16] 张登春,陈焕新,舒信伟,等.空调车内三维紊流流动与传热的模拟研究[J].铁道学报,2002,24(6):32~36 link1
京公网安备 11010502051620号
