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S25 Métodos Numéricos |
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Title:
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CONVERGENCE CHARACTERISTICS OF MULTIGRID NUMERICAL SOLUTIONS OF NON-ISOTHERMAL RECIRCULATING FLOWS
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Summary :
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ABSTRACT. THE PRESENT WORK INVESTIGATES THE EFFICIENCY OF THE MULTIGRID NUMERICAL METHOD WHEN APPLIED TO SOLVE THE TEMPERATURE FIELD IN TWO-DIMENSIONAL BACK STEP STEADY-STATE FLOWS. THE NUMERICAL METHOD INCLUDES FINITE VOLUME DISCRETIZATION WITH THE FLUX BLENDED DEFERRED CORRECTION SCHEME ON STRUCTURED ORTHOGONAL REGULAR MESHES. THE CORRECTION STORAGE (CS) MULTIGRID ALGORITHM PERFORMANCE IS COMPARED FOR DIFFERENT PECLET NUMBERS AND THE NUMBER OF SWEEPS IN EACH GRID LEVEL. UP TO FOUR GRIDS FOR BOTH MULTIGRID V- AND W-CYCLES ARE CONSIDERED. RESULTS INDICATE A BETTER PERFORMANCE OF THE W-CYCLE AND REDUCTION IN COMPUTATIONAL EFFORT FOR LARGER PECLET NUMBERS.
KEY-WORDS: SUDDEN EXPANSION, MULTIGRID, CFD, NUMERICAL METHODS
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Author :
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de Lemos, Marcelo J. S.
Mesquita, Maximilian S.
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Paper View :
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