Prediction of Natural Convection Flow Pattern in Low-Aspect Ratio Enclosures.

Abstract

The present work deals with the natural convection of a fluid confined within a low aspect ratio rectangular enclosure with differentially heated end walls. The objective is to predict the core flow pattern a priori once the boundary and geometry conditions are given. Multiple scales technique is employed to obtain a proper mathematical model from which the core flow patterns are analyzed based on various force balances. Global analyses show a number of possible core configurations. Detailed analyses lead to predictions for the occurrence of possible flow subregimes, such as secondary cells. Comparison with the existing experimental results shows good agreement. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 26, 1982
Accession Number
ADA124995

Entities

People

  • Jinho Lee
  • Simon Ostrach

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Aspect Ratio
  • Boltzmann Equation
  • Boundaries
  • Boundary Layer
  • Boundary Layer Flow
  • Convection
  • Energy
  • Equations
  • Fluid Flow
  • Geometry
  • Heat Transfer
  • Mathematical Models
  • Prandtl Number
  • Storage Batteries
  • Temperature Gradients
  • Thermal Boundary Layer
  • Two Dimensional

Readers

  • Combustion and Flow Dynamics.
  • Fluid Dynamics.