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2013•Journal of Flow Visualization and Image ProcessingRequires access

ON VORTICITY-FIELD EVOLUTION IN VISCOUS- AND INVISCID-FLUID WAVE-DIFFRACTION CASES

Giancarlo Alfonsi

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Abstract

An analysis is performed of the evolution in time of the structure- and vorticity fields in viscousand inviscid-fluid numerically simulated wave-diffraction cases. It is shown that numerical integration of the Euler equations gives rather meaningful results in terms of structure- and vorticity fields in the cases considered, as compared with the physically rigorous approach represented by the solution of the full Navier−Stokes equations.

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What this paper is about

An analysis is performed of the evolution in time of the structure- and vorticity fields in viscousand inviscid-fluid numerically simulated wave-diffraction cases. It is shown that numerical integration of the Euler equations gives rather meaningful results in terms of structure- and vorticity fields in the cases considered, as compared with the physically rigorous approach represented by the solution of the full Navier−Stokes equations.

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Available abstract

An analysis is performed of the evolution in time of the structure- and vorticity fields in viscousand inviscid-fluid numerically simulated wave-diffraction cases. It is shown that numerical integration of the Euler equations gives rather meaningful results in terms of structure- and vorticity fields in the cases considered, as compared with the physically rigorous approach represented by the solution of the full Navier−Stokes equations.

Key concepts: Inviscid flow, Vorticity, Euler equations, Diffraction, Vorticity equation, Physics, Field (mathematics), Euler's formula

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