Study on Hot Soaking Effect and Top Cooling Characteristics of Passenger Compartment
Aiming at the thermal comfort problem of the passengers in vehicle,the temperature of driver,rear passenger and wall reference points in the passenger compartment of Passat Car in summer within 12 hours are simulated based on the CFD transient simulation method.and the hot soaking effect of the passenger compartment are analyzed.Change the position distribution of in-let and outlet and four top forced cooling schemes are proposed,anslyse cooling rate and cooling effect on different schemes.The results indicate that under the condition of hot soaking,the car temperature curve showed a'first rise and then fall'trend,the tem-perature in different regions reached the peak in different periods.The air temperature in the cabin is close to that in the horizontal direction,But the distribution along the height direction of the car is stepped,and there is an obvious phenomenon of'stratifica-tion'.The maximum temperature difference between the head and the shank can reach 16℃,affects the thermal comfort of the oc-cupants.Four top forced ventilation schemes have obvious cooling effect on passenger compartment and different ventilation meth-ods will have a greater impact on the indoor air and wall temperature.Appropriate schemes can be selected according to different dimensions.The results can provide some reference for the study of vehicle thermal comfort.
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