热科学学报（英文版）2007，Vol.16Issue(4)：353-359,7.
Numerical Simulation of Deflecting Flow in a Symmetric Enlarged Channel
Numerical Simulation of Deflecting Flow in a Symmetric Enlarged Channel
Hiroyuki YOSHIKAWA 1Kazuyoshi ICHINOMIYA 2Mizue MUNEKATA 1Hideki OHBA1
作者信息
- 1. Department of Mechanical System Engineering, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555 Japan
- 2. Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto, 860-8555 Japan
- 折叠
摘要
Abstract
Numerical results of three-dimensional separated flow and heat transfer in a rectangular channel with a sudden expansion are presented in this paper. Numerical simulations of Navier-Stokes and energy equations are carried out using the finite difference method. The results of three-dimensional calculations are compared with the two-dimensional ones, and effects of the aspect ratio of channel upon the flow are shown. The transition from symmetric to asymmetric flow appears at lower Reynolds number as increasing the aspect ratio. The details of local heat transfer characteristics in two different separated flow regions on two downstream walls are clarified.Two-dimensionality of the flow and heat transfer almost disappears for the aspect ratio considered.关键词
Separated and reattached flow, symmetric enlarged channel, deflecting flow, heat transferKey words
Separated and reattached flow, symmetric enlarged channel, deflecting flow, heat transfer分类
数理科学引用本文复制引用
Hiroyuki YOSHIKAWA,Kazuyoshi ICHINOMIYA,Mizue MUNEKATA,Hideki OHBA..Numerical Simulation of Deflecting Flow in a Symmetric Enlarged Channel[J].热科学学报（英文版）,2007,16(4):353-359,7.
