虚拟风洞下车辆散热器模块传热性能数值仿真

为提高车辆散热器模块性能和改善动力舱温度场以保证车辆工作性能稳定,依照图纸建立动力舱内、外的三维物理模型,使用热交换模型来代替动力舱内散热器模块,利用CFD数值仿真方法在虚拟风洞中模拟车辆动力舱在标准工况下的传热性能,分析总结散热器、动力舱内外的温度场与流场特点。通过将实验数据与仿真结果对比发现误差在可接受范围内,验证了文中模型的有效性以及分析的准确性。

Numerical simulation analysis of heat transfer performance of vehicle radiator module in a virtual wind tunnel

In order to enhance the heat transfer performance and inprove the temperature field in the engine cabin to keep the vehicle performance stable,a 3-D physical model was built inside and outside the engine cabin according to the system drawing.A heat exchanger model was used instead of the radiator module in the engine cabin,the CFD numerical analysis was used to simulate the heat transfer performance of the engine cabin in a virtual wind tunnel at standard working conditions.The temperature fields and flow fields in the radiator,inside and outside the engine cabin were obtained.The comparison between the experiment data and the simulation results shows that the discrepancy is acceptable,proving the effectiveness of the model and the accuracy of CFD numerical analysis.