BUOYANCY EFFECTS UPON LATERAL DISPERSION IN OPEN-CHANNEL FLOW

被引：8

作者：

SMITH, R

机构：

[1] Department of Applied Mathematics and Theoretical Physics, University of Cambridge

来源：

JOURNAL OF FLUID MECHANICS | 1979年 / 90卷 / FEB期

关键词：

D O I：

10.1017/S0022112079002524

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A model equation is derived for the combined longitudinal and lateral dispersion of a buoyant contaminant in open-channel flow. The central hypotheses are that the water is shallow and that to a first approximation the effluent is vertically well mixed. The model includes allowance for the reduction in turbulent intensity due to weak vertical stratification, a buoyancy-driven secondary flow, and the redistribution of longitudinal momentum by the secondary flow. For a plume the theoretical results for the excess spreading due to buoyancy agree well with Prych's (1970) experimental results. © 1979, Cambridge University Press. All rights reserved.

引用

页码：761 / 779

页数：19

共 13 条

[1]

ABRAHAM G, 1976, EUROPEAN COURSE HEAT, pCH3

[2] DISPERSION OF A BUOYANT SOLUTE IN LAMINAR-FLOW IN A STRAIGHT HORIZONTAL PIPE .1. PREDICTIONS FROM ERDOGAN AND CHATWINS (1967) PAPER [J].