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S8 Engenharia Aeroespacial |
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Title:
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A UNIFIED FORMULATION FOR COMPRESSIBLE AND NEARLY-INCOMPRESSIBLE VISCOUS FLOWS
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Summary :
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ABSTRACT. A UNIFIED FORMULATION FOR BOTH COMPRESSIBLE AND NEARLY INCOMPRESSIBLE VISCOUS FLOW IS PRESENTED. THE NEW METHOD IS A SUBTLE BUT RELEVANT MODIFICATION TO THE AUTHORS’ PREVIOUS FORMULATION FOR ALL SPEED FLOW. THE NEW DISCRETISED EQUATIONS ASSUME A SIMPLER FORM, LEADING TO AN EASIER AND MORE EFFICIENT COMPUTER IMPLEMENTATION. THE MAIN FEATURES REMAIN THE SAME: THE USE OF A SEGREGATED SCHEME, THE CHOICE OF MASS-VELOCITY (DENSITY*VELOCITY), INTERNAL ENERGY AND PRESSURE AS DEPENDENT VARIABLES, AND THE INTRODUCTION OF A STRONGLY IMPLICIT PRESSURE EQUATION. THE METHOD IS APPLIED TO THE ANALYSIS OF LAMINAR FLOWS GOVERNED BY THE NAVIER-STOKES EQUATIONS. COMPUTATIONS OF TRANSONIC AND SUPERSONIC VISCOUS FLOWS AROUND A NACA0012 AIRFOIL ARE PRESENTED.
KEYWORDS: COMPUTATIONAL FLUID DYNAMICS, AERODYNAMICS, ADAPTIVE METHODS.
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Author :
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Moreira, Maria de Lourdes
Sampaio, Paulo Augusto Berquo de
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Paper View :
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