Comparison of several open boundary numerical treatments for laminar recirculating flows

Comparison of several open boundary numerical treatments for laminar recirculating flows

Several open boundary conditions (OBCs) are compared and evaluated in the framework of the SIMPLE algorithm using staggered and non‐staggered grid systems. The benchmark laminar flow test cases used for the OBC evaluation are Poiseuille‐Benard flow in a channel and stratified backward‐facing step fl...

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Veröffentlicht in:International journal for numerical methods in fluids 1993-03, Vol.16 (5), p.403-419
Hauptverfasser: Kobayashi, M. H., Pereira, J. C. F., Sousa, J. M. M.
Format: Artikel
Sprache:eng
Schlagworte:
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Laminar flows
Laminar recirculating flows
Non-staggered grid systems
Outflow boundary conditions
Physics
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container_title International journal for numerical methods in fluids
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creator Kobayashi, M. H.
Pereira, J. C. F.
Sousa, J. M. M.
description Several open boundary conditions (OBCs) are compared and evaluated in the framework of the SIMPLE algorithm using staggered and non‐staggered grid systems. The benchmark laminar flow test cases used for the OBC evaluation are Poiseuille‐Benard flow in a channel and stratified backward‐facing step flow. The investigated OBCs are linear explicit step space extrapolation, Orlanski's monochromatic wave, and pressure extrapolation. Orlanski's and pressure extrapolation open boundary treatment for unsteady and steady flows, respectively, yield little reflection and has proved to be adequate for engineering calculations.
doi_str_mv 10.1002/fld.1650160505
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subjects Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Laminar flows
Laminar recirculating flows
Non-staggered grid systems
Outflow boundary conditions
Physics
title Comparison of several open boundary numerical treatments for laminar recirculating flows
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