V型两缸柴油机匹配农机舱内温度场计算分析
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摘要
通过流体仿真分析手段,对某V型两缸柴油机与某农用机械的舱内流场与温度场开展预测分析。对比电子风扇与机械风扇对舱内流动与温度的影响,并考虑发动机排气侧热辐射对周边零部件的影响。计算结果表明机械风扇相对于电子风扇,更有利于舱内散热。利用CFD仿真分析能较全面地考察农机舱内的流动与温度分布,在物理样机测试之前为方案评估与优化提供直接的指导。
The fluid field and temperature field of a cabin were predicted for a farm machinery matching a V-type two-cylinder diesel engine by the simulation of computational fluid dynamic. The difference of electric fan and mechanical fan was compared and the radiation of the engine exhaust side was simulated,which resulted that machinery fan is better to decrease the cabin temperature relative to electric fan. CFD simulation is a good way to investigate the velocity and temperature under the cabin, which could predict and optimize the layout of cabin before the test of physical prototype.
The fluid field and temperature field of a cabin were predicted for a farm machinery matching a V-type two-cylinder diesel engine by the simulation of computational fluid dynamic. The difference of electric fan and mechanical fan was compared and the radiation of the engine exhaust side was simulated,which resulted that machinery fan is better to decrease the cabin temperature relative to electric fan. CFD simulation is a good way to investigate the velocity and temperature under the cabin, which could predict and optimize the layout of cabin before the test of physical prototype.
引文
1刘鹏.平地机发动机舱空气侧流动仿真研究[D].长春:吉林大学,2009
2 谢暴,许述财,陶其铭.基于STAR-CCM+的轿车发动机舱热管理仿真分析与研究[J].常熟理工学院学报,2016,30(4):38-41+50
3 王福军.计算流体动力学分析:CFD软件原理与应用[M].北京:清华大学出版社,2004
4 杨世铭,陶文铨.传热学(第四版)[M].北京:高等教育出版社,2006
5 张坤,王玉璋,杨小玉.应用CFD方法改善发动机舱散热性能[J].汽车工程,2011,33(4):314-317+368
2 谢暴,许述财,陶其铭.基于STAR-CCM+的轿车发动机舱热管理仿真分析与研究[J].常熟理工学院学报,2016,30(4):38-41+50
3 王福军.计算流体动力学分析:CFD软件原理与应用[M].北京:清华大学出版社,2004
4 杨世铭,陶文铨.传热学(第四版)[M].北京:高等教育出版社,2006
5 张坤,王玉璋,杨小玉.应用CFD方法改善发动机舱散热性能[J].汽车工程,2011,33(4):314-317+368