STRATIFIED FLOW OVER AN OBSTACLE: A NUMERICAL EXPERIMENT

Abstract

Numerical studies of time-dependent, two-dimensional, stratified flow of incompressible, viscous, diffusive fluid are described. The particular physical problem which was considered is that of stratified flow over a vertical fence when the motion is impulsively started from rest. A new iterative method was used for numerical integration of the governing equations and was found to be very effective. The method is based on the combination of the Crank-Nicolson method with a strongly implicit iterative method developed by Stone (1968). Full details of the method are given together with a summary of its performance on the problems calculated. It is shown that proper treatment of the inflow and outflow boundary conditions is crucial for successful numerical modeling of stratified flows.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1970
Accession Number
AD0703673

Entities

People

  • C. J. Apelt
  • Jung-tai Lin

Organizations

  • Colorado State University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Abstracts
  • Boundary Layer
  • Computational Fluid Dynamics
  • Computational Science
  • Difference Equations
  • Differential Equations
  • Diffusion
  • Fluid Dynamics
  • Fluid Flow
  • Froude Number
  • Mechanical Properties
  • Physics Laboratories
  • Plastic Explosives
  • Reynolds Number
  • Richardson Number
  • Specific Heat
  • Stratified Fluids

Fields of Study

  • Mathematics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Fluid Dynamics.
  • Fluid Mechanics and Fluid Dynamics.