Boundary conditions at inflow and outflow planes

J. S. Vrentas, Christine Mary Vrentas, H. C. Ling

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The problem of analyzing complex flows in infinite domains by replacing the infinite region by a bounded region is examined. The formulation of appropriate boundary conditions at inflow and outflow planes is discussed, and methods of verifying that the solution to the finite problem represents a valid approximation to the solution of the infinite problem are evaluated. A model problem for the creeping flow of a Newtonian fluid is solved, and it is shown that utilization of a finite domain leads to some inaccuracies in the evaluation of pressure gradients and pressure drops. It is further shown for the model problem that it is possible to obtain seemingly acceptable solutions for the finite flow field which are, in reality, poor approximations to the solution of the infinite problem.

Original languageEnglish (US)
Pages (from-to)1-13
Number of pages13
JournalJournal of Non-Newtonian Fluid Mechanics
Volume19
Issue number1
DOIs
StatePublished - Jan 1 1985

Fingerprint

Boundary conditions
boundary conditions
Newtonian fluids
pressure drop
Pressure gradient
approximation
pressure gradients
Pressure drop
Flow fields
flow distribution
formulations
Fluids
evaluation
Creeping Flow
Infinite Domain
Pressure Drop
Newtonian Fluid
Pressure Gradient
Approximation
Flow Field

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics

Cite this

Vrentas, J. S. ; Vrentas, Christine Mary ; Ling, H. C. / Boundary conditions at inflow and outflow planes. In: Journal of Non-Newtonian Fluid Mechanics. 1985 ; Vol. 19, No. 1. pp. 1-13.
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Boundary conditions at inflow and outflow planes. / Vrentas, J. S.; Vrentas, Christine Mary; Ling, H. C.

In: Journal of Non-Newtonian Fluid Mechanics, Vol. 19, No. 1, 01.01.1985, p. 1-13.

Research output: Contribution to journalArticle

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