180°弯曲方管牛顿流体及一种非牛顿流体湍性流动的数值模拟

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名

邮箱

手机号码

标题

留言内容

验证码

The Numerical Simulation of Turbulent Flows of Newtonian and a Sort of Non-Newtonian Fluid in 180-Degree Square Sectioned Bend

摘要: 运用湍流k-ε模式及实测壁面函数分别模拟牛顿流体(清水)及一种非牛顿流体(聚合物稀薄减阻溶液)流经180°弯曲方管的湍性流动,取得与实测速度分布吻合较好的结果.对于湍流模式对存在大涡的复杂流动的适应性,根据计算和试验结果进行了分析和讨论.
- 湍流 /
- 牛顿流体 /
- 数值模拟
Abstract: Using k-ε model of turbulence and measured wall functions, turbulent flows of Newtonian (pure water) andasort of non-Newtonian fluid (dilute, drag-reduction solution of polymer) in a 180-degree curved bend were simulated numerically. The calculated results agreed well with the measured velocity profiles. On the basis of calculation and measurement, appropriateness of turbulence model to complicated flow in which the large-scale vortex exists was analyzed and discussed.
- turbulent flows /
- Newtonian fluid /
- numerical simulation

[1]	吴望一、温功碧,应用数学和力学2, 5 (1981).
[2]	Patankar, S. V. and D. B. Spalding, A calculation procedure for heat, mass and momentum transfer in three-dimensional parobolic flows, Int. J. Heat and Mass Trans., 15 (1972).
[3]	Patankar, S, V., Numerical Heat Tranfer and Fluid Flow, McGaw-Hill Book Company (1980).
[4]	Feng Tong, Proc. 3rd Asian Conference of Fluid Mechanics, Tokyo (1986).
[5]	董曾南等,力学学报.6(1982)
[6]	冯桐,上海工业大学博士学位论文(1988)
[7]	Selling, R, H, J., D,W. Hoyt and O. Scrivener. The effect ofdrag-reducing additives of fluid fows and their industrial applications, J. Hydraulic Research, 20 1,2 (1982).
[8]	Chen, C. J., Prediction of Turbulent Flows, Lecture Notes in The University of Iowa, (Dec.(1987)).
[9]	蔡树棠,《湍流理论》,中国科技大学近代力学系(1985).

点击查看大图