摘要
利用Lam-Bremhorst低雷诺数湍流模型,对流项差分格式采用QUICK格式,结合非稳态计算方法,对矩形方腔自然对流问题进行了数值模拟研究。计算结果表明:随着时间的推进,流场逐渐稳定,最后趋于定常;将最终稳定的速度场与实验和大涡模拟结果进行比较,发现数值模拟能准确地预测出速度场、温度场以及湍动能场。
The Lam-Bremhorst low-Reynolds number turbulence model with QUICK discretization on convection term and time marching method is adopted to simulate the natural convection in rectangular cavity. The simulation results show that with the progress of time, the predicated airflow is becoming stable and constant. Compared with experiments and large eddy simulation results, the simulated stable airflow results can accurately predict velocity, temperature and turbulence kinetic energy field.
出处
《浙江理工大学学报（自然科学版）》
2008年第4期457-461,共5页
Journal of Zhejiang Sci-Tech University(Natural Sciences)
基金
国家自然科学基金资助项目(50605056)
浙江省科技厅资助项目(2006C31060)
关键词
矩形方腔
自然对流
低雷诺数湍流模型
数值模拟
rectangular cavity
natural convection
low-reynolds number turbulence model
numerical simulation
