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On the anomaly of velocity-pressure decoupling in collocated mesh solutionsThe use of various pressure correction algorithms originally developed for fully staggered meshes can yield a velocity-pressure decoupled solution for collocated meshes. The mechanism that causes velocity-pressure decoupling is identified. It is shown that the use of a partial differential equation for the incremental pressure eliminates such a mechanism and yields a velocity-pressure coupled solution. Example flows considered are a three dimensional lid-driven cavity flow and a laminar flow through a 90 deg bend square duct. Numerical results obtained using the collocated mesh are in good agreement with the measured data and other numerical results.
Document ID
19910012135
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Kim, Sang-Wook (Texas Univ. Arlington., United States)
Vanoverbeke, Thomas (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
March 1, 1991
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
NAS 1.15:103769
NASA-TM-103769
E-6031
Accession Number
91N21448
Funding Number(s)
PROJECT: RTOP 505-62-52
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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