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以YW25G型空调硬卧列车车厢为研究对象建立物理模型。物理模型中考虑了车厢内各障碍物,包括边桌、行李架、床铺、折座等的影响,采用K-ε湍流模型对车厢内三维湍流流动和传热进行数值模拟,研究车厢内流场及温度场的分布变化规律。研究结果表明:下铺区域的气流组织及温度分布较好,其次是中铺,上铺区域的气流组织及温度分布较差;距车门越近,气流组织越好,车厢中部区域的气流组织最差;床铺区域的空气温度较走廊区域的空气温度低。
YW25G air-conditioned hard-sleeper train compartment as the research object to establish a physical model. In the physical model, the influence of obstacles, including the side tables, luggage racks, bedsteads and folding seats are taken into account in the model. The K-ε turbulence model is used to simulate the three-dimensional turbulent flow and heat transfer inside the car. And the distribution of temperature changes. The results show that the air distribution and temperature distribution in the underpassed area are better, followed by the middle shop, and the airflow distribution and temperature distribution are poor in the underpassed area. The closer to the vehicle door, the better the airflow organization, The air temperature in the bed area is lower than the air temperature in the corridor area.