On Error Analysis for the 3D Navier-Stokes Equations in Velocity-Vorticity-Helicity Form

Authors:
Hyesuk K. Lee;Maxim A. Olshanskii;Leo G. Rebholz
Affiliations:
hklee@clemson.edu and rebholz@clemson.edu;Maxim.Olshanskii@mtu-net.ru;-
Venue:
SIAM Journal on Numerical Analysis
Year:
2011

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Abstract

We present a rigorous numerical analysis and computational tests for the Galerkin finite element discretization of the velocity-vorticity-helicity formulation of the equilibrium Navier-Stokes equations (NSEs). This formulation, recently derived by the authors, is the first NSE formulation that directly solves for helicity and the first velocity-vorticity formulation to naturally enforce incompressibility of the vorticity, and preliminary computations confirm its potential. We present a numerical scheme; prove stability, existence of solutions, uniqueness under a small data condition, and convergence; and provide numerical experiments to confirm the theory and illustrate the effectiveness of the scheme on a benchmark problem.