Authors

A. A. Mishra; N. Hasan; S. Sanghi;R. Kumar

Comments

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Abbreviated Journal Title

Phys. Fluids

Keywords

RAYLEIGH-TAYLOR INSTABILITY; EXCHANGE FLOW-THROUGH; NATURAL-CONVECTION; BENARD CONVECTION; ROTATING CYLINDER; HEAT REMOVAL; MODELS; TURBULENCE; DYNAMICS; NUMBER; Mechanics; Physics, Fluids & Plasmas

Abstract

The dynamics of the transient, two-dimensional buoyancy driven thermal mixing of two fluid masses at different temperatures, initially at rest and confined to separate portions of a horizontally partitioned adiabatic enclosure, is investigated numerically within the framework of the Boussinesq approximation. The fluids are allowed to mix through a centrally located opening or vent in the partition. Apart from the geometric parameters, the dynamics is governed by the Rayleigh (Ra) and Prandtl (Pr) numbers. Spanning the range 500 5000, there exists a vortex trapped in the vent for a significant length of time, preventing the two fluid masses to mix directly, thereby slowing down the overall mixing rate in comparison to the flows for Ra < = 5000.

Journal Title

Physics of Fluids

Volume

20

Issue/Number

6

Publication Date

1-1-2008

Document Type

Article

Language

English

First Page

15

WOS Identifier

WOS:000257283800018

ISSN

1070-6631

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