Discontinuity-capturing directional dissipation (DCDD) in computation of turbulent flows

Franco Rispoli, Pierpaolo Borrelli, Tayfun E. Tezduyar

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

Stabilized formulations are now widely used in the computation of turbulent flows. The Streamline-Upwind/Petrov-Galerkin (SUPG) and Pressure-Stabilizing/ Petrov-Galerkin (PSPG) methods are among the most popular stabilized formulations. The Discontinuity Capturing Directional Dissipation (DCDD) was first introduced as a complement to the SUPG and PSPG stabilizations for the computation of incompressible flows in the presence of sharp solution gradients. The DCDD stabilization takes effect where there is a sharp gradient in the velocity field and introduces dissipation in the direction of that gradient. The length scale used in defining the DCDD stabilization is based on the solution gradient. Here we describe how the DCDD stabilization, in combination with the SUPG and PSPG stabilizations, can be applied to computation of turbulent flows. We examine the similarity between the DCDD stabilization and a purely dissipative energy cascade model. To evaluate the performance of the DCDD stabilization, we compute as test problems a plane channel flow and an axial flow fan rotor.

Original languageEnglish
Publication statusPublished - 2004
EventEuropean Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2004 - Jyvaskyla, Finland
Duration: 2004 Jul 242004 Jul 28

Conference

ConferenceEuropean Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2004
CountryFinland
CityJyvaskyla
Period04/7/2404/7/28

Keywords

  • Advective and diffusive length scales
  • DCDD stabilization
  • SUPG and PSPG stabilizations
  • Stabilization parameters
  • Stabilized formulations

ASJC Scopus subject areas

  • Artificial Intelligence
  • Applied Mathematics

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  • Cite this

    Rispoli, F., Borrelli, P., & Tezduyar, T. E. (2004). Discontinuity-capturing directional dissipation (DCDD) in computation of turbulent flows. Paper presented at European Congress on Computational Methods in Applied Sciences and Engineering, ECCOMAS 2004, Jyvaskyla, Finland.