摘要
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。
Mixed convection flow in a ventilated room was simulated using the kε model and a new zeroequation turbulence model. Comparison of the numerical results and the measured data showed that the new zeroequation turbulence model gives more satisfactory results in shorter time. The isothermal and nonisothermal airflow in an airconditioned room were then simulated with the zeroequation turbulence model. The simulated results agreed well with the experiments. Therefore, the new zeroequation turbulence model is recommended for heating, ventilating and air conditioning industry because it is quick and so efficiently accurate for engineering studies.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第10期109-113,共5页
Journal of Tsinghua University(Science and Technology)
