旋流送风方式下客车乘员舱人体热舒适性研究

Study on the Thermal Comfort of Passenger Car Occupants Under Swirl Air Supply Mode

为了研究客车乘员舱内流场特性和乘员热舒适性,基于计算流体力学,建立制冷空调开启下客车乘员舱的仿真模型。根据整体热舒适性偏差的评价指标,对车内流场和温度场特性进行研究,分析了4种不同送风方式下客车乘员舱乘员的热舒适性。结果表明:在传统稳态、脉冲和余弦送风下,乘员整体热舒适性偏差平均值都小于0,乘员未能达到整体热舒适性状态;出风口采用旋流出风时,气体向下旋转送出,扰动性强、覆盖范围大,乘员整体热舒适性偏差平均值能达到0.14,乘员处于整体热舒适性状态,旋流送风能够很好地提升乘员的热舒适性。

In order to study the flow field characteristics and thermal comfort of the passenger compartment of the passenger car,a simulation model of the passenger compartment of the passenger car under the opening of refrigeration and air conditioning was established based on computational fluid dynamics.According to the evaluation index of the overall thermal comfort deviation,the characteristics of the flow field and temperature field in the vehicle were studied,and the thermal comfort of the occupants in the passenger compartment of the passenger car under four different air supply modes was analyzed.The results show that the average deviation of the overall thermal comfort of the occupants is less than 0under the traditional steady-state,pulsed and cosine air supply,and the occupants fail to reach the overall thermal comfort state.When the air outlet adopts the swirl outlet,the gas rotates downward and is sent out,the disturbance is strong,the coverage is large,the average deviation of the overall thermal comfort of the occupants can reach 0.14,the occupants are in the overall thermal comfort state,and the swirl air supply can well improve the thermal comfort of the occupants.