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Singularity embedding method in potential flow calculationsThe so-called H-type mesh is used in a finite-element (or finite-volume) calculation of the potential flow past an airfoil. Due to coordinate singularity at the leading edge, a special singular trial function is used for the elements neighboring the leading edge. The results using the special singular elements are compared to those using the regular elements. It is found that the unreasonable pressure distribution obtained by the latter is removed by the embedding of the singular element. Suggestions to extend the present method to transonic cases are given.
Document ID
19820023424
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Jou, W. H. (Flow Research, Inc. Kent, WA, United States)
Huynh, H. (Flow Research, Inc. Kent, WA, United States)
Date Acquired
September 4, 2013
Publication Date
June 1, 1982
Subject Category
Aerodynamics
Report/Patent Number
NASA-CR-166387
NAS 1.26:166387
Accession Number
82N31300
Funding Number(s)
CONTRACT_GRANT: NASA ORDER A-77471B
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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