Numerical calculation of turbulent corner flows
type: Item
instance of: scholarly article
title: Numerical calculation of turbulent corner flows
zbMATH Open document ID: 0591.76083
DOI: 10.1016/0307-904X(85)90063-0
author: J. O. Ilegbusi
published in: Applied Mathematical Modelling
publication date: 1985-01-01T00:00:00Z
review text: Two approximations have been presented for predicting local mean velocity and Reynolds stress behaviour in square duct flow. For both cases, the vorticity-generating Reynolds stresses are related to gradients of the mean velocity. Wall proximity effects are introduced in the second approximation by using a new decay function in conjunction with the pressure-strain model proposed by \textit{B. E. Launder}, \textit{G. J. Reece} and \textit{W. Rodi} [J. Fluid. Mech. 68, 537-566 (1975; Zbl 0301.76030)]. The first approximation, however, neglects wall proximity effects. The eddy viscosity is deduced from K, the turbulent energy, and W, a measure of the vorticity fluctuations. It is found that the second approximation performs better than the first approximation when compared with data for fully-developed square duct flow. The second approximation also performs generally better than the model proposed by \textit{W. Rodi}, \textit{I. Celik}, \textit{A. D. Demurren}, \textit{G. Scheyerer} and \textit{E. Skirani}, Proc. 1980-81 AFOSR-HTTM Stanford Conference on Complex Turbulent Flows (1981)] which is based on the K-\(\epsilon\) model.
Mathematics Subject Classification ID: 76F99
Mathematics Subject Classification ID: 76M99
zbMATH DE Number: 3950025
zbMATH Keywords: k-epsilon model
zbMATH Keywords: Reynolds stress behaviour
zbMATH Keywords: square duct flow
zbMATH Keywords: vorticity- generating Reynolds stresses
zbMATH Keywords: Wall proximity effects
zbMATH Keywords: decay function
zbMATH Keywords: pressure-strain model
zbMATH Keywords: eddy viscosity
zbMATH Keywords: turbulent energy
zbMATH Keywords: vorticity fluctuations
zbMATH Keywords: fully-developed square duct flow
MaRDI profile type: Publication
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description: scientific article; zbMATH DE number 3950025