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S8 Engenharia Aeroespacial |
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Title:
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AN ORDER OF ACCURACY ANALYSIS FOR FLUX-VECTOR SPLITTING SCHEMES ON UNSTRUCTURED GRIDS
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Summary :
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THE WORK PRESENTS A DETAILED NUMERICAL ANALYSIS OF THE ORDER OF ACCURACY OF SOME PROPOSED CELL CENTERED, FINITE VOLUME SCHEMES FOR THE SOLUTION OF THE 2-D GASDYNAMIC EQUATIONS ON TRIANGULAR UNSTRUCTURED GRIDS. ALL THE SCHEMES ANALYZED ARE NOMINALLY SECOND ORDER ACCURATE AND THEY ARE BASED ON A MUSCL-TYPE LINEAR RECONSTRUCTION OF INTERFACE PROPERTIES. THE SCHEMES UNDER CONSIDERATION ARE ALSO NOMINALLY FLUX-VECTOR SPLITTING-TYPE SCHEMES. THE BASIC ASPECTS EFFECTING THE SCHEME S ORDER OF ACCURACY ARE THE FORM IN WHICH THE RECONSTRUCTION PROCESS IS IMPLEMENTED AND THE FORM IN WHICH THE LIMITING PROCESS IS PERFORMED. THE SCHEMES ARE TESTED ON A LINEAR CONVECTION-LIKE MODEL EQUATION AND THE NUMERICAL SOLUTIONS ARE COMPARED TO THE ANALYTICAL SOLUTION, FOR DIFFERENT MESH SIZES, IN ORDER TO ASSESS THE SCHEME S ORDER OF ACCURACY.
KEYWORDS: UNSTRUCTURED GRIDS, FINITE VOLUME METHODS, FLUX-VECTOR SPLITTING, 2ND-ORDER RECONSTRUCTION, ORDER OF ACCURACY.
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Author :
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Azevedo, João L. F.
Figueira da Silva, Luís Fernando 0
Strauss, Daniel 0
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Paper View :
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