驻车通风参数对驾驶室热浸降温效果的影响

Influence of Parked Car Ventilation Parameters on Driver Compartment Cooling after Hot Soak

为获得有利于增强驻车通风效果的参数,对驻车通风过程中的相关参数进行研究。首先通过模型试验验证了计算流体动力学(CFD)仿真方法在热浸和通风降温模拟中的准确性;然后参照模型试验条件,对驾驶室热浸及通风降温的过程进行仿真,对比了不同驻车通风参数下驾驶室的降温成效。结果表明:驾驶室热浸后,前3min的降温效果较明显,且风量增加有助于降温,但风速大于250m^3/h时,降温效果不明显;调节风量分配比例,增加向上偏转吹脸气流有助于驾驶室降温。

The relevant parameters in the process of parking ventilation were studied to obtain the parameters that are helpful to enhance the effect of parking ventilation.Firstly,a model experiment was used to verify the accuracy of hot soak and ventilation cooling simulation.Then,under the conditions of model experiment,the cabin hot soak and ventilation process was simulated,and the driver compartment cooling effects under different parked car ventilation parameters were compared.The results show that,after hot soak,the cooling effect is obvious in the first 3 minutes,and the increase of air volume is helpful for cooling,but the effect is not obvious when the air speed exceeds 250 m^3/h.In addition,adjusting the air volume distribution ratio and increasing the air flow with upward deflection can enhance the cooling effect.