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利用带浮升力效应的 k- ε湍流模型和一个新零方程湍流模型对某房间内空气的混合对流流动进行了数值模拟 ,通过比较发现 ,新零方程湍流模型与实验数据吻合得更好 ,且可以很快获得收敛解。利用新零方程湍流模型对房间内的等温流动、非等温流动进行了模拟 ,发现数值计算结果和相应实验数据吻合得很好。由此考察和验证了新模型对暖通空调领域中流动和传热问题的实用性和可靠性 ,可以利用该模型快速、精确地设计和分析暖通空调领域中的室内空气流动问题
The mixed convective flow of air in a room was numerically simulated by a k-ε turbulence model with a lift-up effect and a new zero-equation turbulence model. The results show that the new zero-equation turbulence model is in good agreement with the experimental data Convergence can be quickly obtained. A new zero-equation turbulence model was used to simulate isothermal flow and non-isothermal flow in the room, and the numerical results were in good agreement with the corresponding experimental data. The feasibility and reliability of the new model for flow and heat transfer problems in the field of HVAC and AC are investigated and verified. The model can be used to quickly and accurately design and analyze the problem of indoor air flow in HVAC field