Abstract
ABSTRACT This paper presents a finite element method for the simulation of two-dimensional internal compressible flows. The Navier-Stokes equations are solved in terms of the so-called enthalpic variables: the static pressure p, the momentum per unit volume U and the total specific enthalpy h. The variational formulation is a variante of the SUPG method. The stability of this method is reenforced by the use of a discontinuity capturing operator. A turbulence algebraic model for the simulation of flows in ejectors is built. It consists in separating the flow into two regions: one near the wall where the Baldwin-Lomax model is applied and the other, far from the wall, where a new formulation, based on the Schlichting model for free jets, is proposed. The turbulent viscosity evaluation, on an unstructured grid, is a variante of the Rostand's technic. The discretization of the variational form is done on a P1/P2 element and uses an implicit scheme. The algebraic system is solved using the GMRES algorithm with...
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