Heat Transfer Simulation of Vehicle Heat Exchanger in Plateau Environment

Authors

Xu Xiang, 1. Department of Military Vehicle, Military Transportation University, Tianjin 300161, China;;
Wenchao Suo, 2.Primary Non-Commissioned Officer Training Base, Army Aviation Institute, Beijing 101123, China;;
Dingfu Yang, 3.Automotive Proving Ground of Army, Dingyuan 233200, China;
Surong Dong, 1. Department of Military Vehicle, Military Transportation University, Tianjin 300161, China;;

Abstract

Abstract: The effect of heat transfer caused by plateau environment in vehicle heat exchanger was investigated. The heat transfer equation for heat exchanger was modified by introducing air parameters at different altitudes. A heat transfer modeling approach for vehicle heat exchanger was proposed by using the thermal network method. The heat transfer effect of the plateau and the flow state of fluid medium were analyzed in the vehicle heat exchanger by using the simulation software FlowMaster. Simulation results show that the decrease of pressure and density of air in altitude was the primary cause to heat transfer ability. With the altitude increasing and airflow velocity decreasing, the Re of airflow decreased while the flow state of air in the channel changed from turbulence to laminar state, therefor the convective heat transfer strength declined; and the heat transfer coefficient and the heat transfer ability of heat exchanger both decreased. With every 1 000 m rising in altitude, the heat transfer coefficients of air side and the heat emission of heat exchanger declined by 9.5% and 9.0% respectively.

Recommended Citation

Xiang, Xu; Suo, Wenchao; Yang, Dingfu; and Dong, Surong (2019) "Heat Transfer Simulation of Vehicle Heat Exchanger in Plateau Environment," Journal of System Simulation: Vol. 30: Iss. 8, Article 40.
DOI: 10.16182/j.issn1004731x.joss.201808040
Available at: https://dc-china-simulation.researchcommons.org/journal/vol30/iss8/40

First Page

3146

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201808040

Last Page

3153

CLC

TK124

Recommended Citation

Xu Xiang, Suo Wenchao, Yang Dingfu, Dong Surong. Heat Transfer Simulation of Vehicle Heat Exchanger in Plateau Environment[J]. Journal of System Simulation, 2018, 30(8): 3146-3153.

DOI

10.16182/j.issn1004731x.joss.201808040