NUMERICAL STUDY OF TURBULENT SECONDARY FLOWS IN CURVED DUCTS

被引：18

作者：

HUR, N ^{[1
]}

THANGAM, S ^{[1
]}

SPEZIALE, CG ^{[1
]}

机构：

[1] NASA,LANGLEY RES CTR,INST COMP APPLICAT SCI & ENGN,HAMPTON,VA 23665

来源：

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME | 1990年 / 112卷 / 02期

关键词：

Mathematical Techniques - Numerical Analysis;

D O I：

10.1115/1.2909389

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The pressure driven, fully developed turbulent flow of an incompressible viscous fluid in curved ducts of square cross-section is studied numerically by making use of a finite volume method. A nonlinear K-1 model is used to represent the turbulence. The results for both straight and curved ducts are presented. For the case of fully developed turbulent flow in straight ducts, the secondary flow is characterized by an eight-vortex structure for which the computed flowfield is shown to be in good agreement with available experimental data. The introduction of moderate curvature is shown to cause a substantial increase in the strength of the secondary flow and to change the secondary flow pattern to either a double-vortex or a four-vortex configuration. © 1990 by ASME.

引用

页码：205 / 211

页数：7