坦克排气流场与温度场的计算流体力学分析

Computational Fluid Dynamics Analysis for Flow Field and Temperature Field of Tank Exhaust

建立了坦克排气流动与传热的计算流体力学(CFD)模型,应用FLUENT软件完成三维数值分析。对排气管出口截面的气体温度与压力进行了测试,分析值与测试值符合较好。通过CFD分析得到了坦克排气流场与温度场的详细分布特性和外界环境温度与风速对排气的影响。分析结果可以为坦克排气红外辐射特征的研究提供依据。

A computational fluid dynamics（CFD） models were constructed for exhaust flow and heat transfer of tank. Their three-dimensional numerical analyses were accomplished by applying FLUENT. The gas temperature and the pressure at exhaust pipe exit section were tested and their analysed values accord with the test data well. Detailed distributing characteristic for flow field and temperature field of tank exhaust and the effect of environment temperature and wind speed on exhaust were obtained through CFD analysis. These results can provide the basis for investigating infrared radiation characteristic of tank exhaust.