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Grid generation and flow solution method for Euler equations on unstructured gridsA grid generation and flow solution algorithm for the Euler equations on unstructured grids is presented. The grid generation scheme, which uses Delaunay triangulation, generates the field points for the mesh based on cell aspect ratios and allows clustering of grid points near solid surfaces. The flow solution method is an implicit algorithm in which the linear set of equations arising at each time step is solved using a Gauss-Seidel procedure that is completely vectorizable. Also, a study is conducted to examine the number of subiterations required for good convergence of the overall algorithm. Grid generation results are shown in two dimensions for an NACA 0012 airfoil as well as a two element configuration. Flow solution results are shown for a two dimensional flow over the NACA 0012 airfoil and for a two element configuration in which the solution was obtained through an adaptation procedure and compared with an exact solution. Preliminary three dimensional results also are shown in which the subsonic flow over a business jet is computed.
Document ID
19920014290
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Anderson, W. Kyle (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1992
Subject Category
Aerodynamics
Report/Patent Number
NAS 1.15:4295
NASA-TM-4295
L16986
Report Number: NAS 1.15:4295
Report Number: NASA-TM-4295
Report Number: L16986
Accession Number
92N23533
Funding Number(s)
PROJECT: RTOP 505-59-53-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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