Computation of 3-D Turbulent Boundary Layers Using the V2F Model

Authors: Parneix S.¹; Durbin P.A.²; Behnia M.³

Source: Applied Scientific Research, Volume 60, Number 1, 1998 , pp. 19-46(28)

Publisher: Springer

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Abstract:

The V2F model makes use of the standard k– epsiv model, but extends it by incorporating near-wall turbulence anisotropy and non-local pressure-strain effects, while retaining a linear eddy viscosity assumption. It has the attraction of fewer equations and more numerical robustness than Reynolds stress models. The model is presented in a form that is completely independent of distance to the wall. This formalism is well suited to complex, 3-D, multi-zone configurations. It has been applied to the computation of two complex 3-D turbulent flows: the infinitely swept bump and the appendage-body junction; some preliminary results for the flow in a U-bend are also presented. Despite the use of a linear, eddy viscosity formula, the V2F model is shown to provide excellent predictions of mean flow quantities. The appendage-body test case involves very complex features, such as a 3-D separation and a horseshoe vortex. The V2F simulations have been shown to successfully reproduce these features, both qualitatively and quantitatively. The calculation of the complex flow structure inside and downstream of the U-bend also shows very promising results.

Keywords: V2F; turbulence modeling; 3DTBL; swept bump; wing-body junction; U-bend

Language: English

Document Type: Regular paper

Affiliations: 1: Center for Turbulence Research, Stanford University, Stanford, CA 94305-3030, U.S.A. 2: Mechanical Engineering Department, Stanford University, Stanford, CA 94305-3030, U.S.A. 3: Center for Turbulence Research, Stanford University, Stanford, CA 94305-3030, U.S.A.

Publication date: 1998-01-01