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应用重整化群κ-ε紊流模型,分别计算并比较了非空态与空态空调列车室内空气三维紊流流场与温度场的分布特性。采用Monte Carlo法分析计算了太阳透射辐射和壁面间的辐射在车室内各固体壁面引起的附加热流变化,并以此作为能量方程的附加源项;对旅客产生的热负荷分别采用平用分布与空间分布处理方式,对比分析了采用不同热负荷分布方式对空调列车客室内三维空气流场与温度场分布的影响。研究分析表明:不同的热源处理方式对客室内流场与温度场由较大的影响。最后,应用试验研究的方法验证了采用数值模拟手段研究非空态空调列车室内气流组织的可靠性,为空调列车室内舒适环境的优化研究提供了依据。
The renormalization group κ-ε turbulence model is used to calculate and compare the distribution characteristics of the three-dimensional turbulent flow field and temperature field in indoor and outdoor air-conditioned train. Monte Carlo method was used to calculate the additional heat flux caused by the solar radiation and the radiation between the walls in the interior of the vehicle wall as an additional source term of the energy equation. The heat load generated by passengers was evenly distributed with The spatial distribution of air-conditioned train passenger compartment with different heat load distributions was compared and analyzed. The research shows that different heat treatment methods have a great influence on the flow field and temperature field in the passenger compartment. Finally, the reliability of the air distribution in the non-air-conditioned train interior is verified by the numerical simulation method, which proves the optimization of indoor air-conditioned train comfort environment.