In the present study, a model experiment is performed in order to clarify the airflow characteristics of a car cabin. In addition, this study provides high precision data for a benchmark test using the CFD (Computational Fluid Dynamics) analysis method. Initially, the study focuses on the ventilation mode that describes the flow field in the car cabin obtained from an experiment with PIV. The car cabin model is made of transparent acrylic resin and measures 1,450 mm×700 mm×900 mm, almost half the size of a real car, and was installed in a thermostatic chamber. In the experiment, the cabin model was controlled by an orifice tube and a pressure gauge in order to confirm the airflow rate. The PIV measurement was performed at a total of 18 regions within the section. The analyzed PIV data provides the mean velocity profile, the standard deviation distribution and the turbulence intensity distribution at each region.

中文翻译：

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使用 PIV 测量汽车空调气流

在本研究中，进行了模型实验以阐明车厢的气流特性。此外，这项研究为使用 CFD（计算流体动力学）分析方法的基准测试提供了高精度数据。最初，该研究侧重于描述从 PIV 实验中获得的车厢内流场的通风模式。车舱模型由透明的丙烯酸树脂制成，尺寸为 1,450 毫米×700 毫米×900 毫米，几乎是真车的一半大小，并安装在恒温室中。在实验中，机舱模型由孔板管和压力表控制，以确认气流速度。PIV 测量是在该部分内的总共 18 个区域进行的。分析的 PIV 数据提供了平均速度剖面，