摘要
传热对流动稳定性的影响与流场类型有关。为了研究传热对圆管流动稳定性的影响,通过数值求解柱坐标系可压Orr-Sommerfeld方程,对CFD模拟得到的圆管流动平均流场进行线性稳定性分析。结果表明壁面起加热作用时圆管流动的线性稳定性下降,而壁面起冷却作用时圆管流动更加稳定。
Effect of heat transfer on flow stability depends on the flow field. Linear stability analysis of pipe flow whose average flow field was obtained by CFD simulation was carried out by numerically solving compressible OrrSommerfeld equation in cylindrical coordinates. Linear stability results show that the heating effect of the wall make pipe flow more unstable,while cooling effect of the wall make pipe flow more stable.
出处
《科学技术与工程》
北大核心
2017年第8期293-297,共5页
Science Technology and Engineering
基金
国家自然科学基金(51506121)
关键词
传热
圆管流动
线性稳定性
可压O-S方程
heat transfer
pipe flow
linear stability
compressible Orr-Sommerfeld equation
