A hybrid numerical scheme for a new formulation of delayed detached-eddy simulation (DDES) based on elliptic relaxation

N. Ashton, R. Prosser, A. Revell

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    A new formulation of Delayed Detached-Eddy Simulation (DDES) based on the φ - f elliptic relaxation model has been derived and calibrated. A suitable correction function Ψ and a model constant C DDES have been formulated and validated using decaying isotropic turbulence (DIT). The model has been applied to a 2D wall-mounted hump at high-Reynolds number where it has shown promising improvements over the common SST-DDES model. The improved RANS modelling of the near-wall physics results in an improved prediction of the levels of turbulent Reynolds stresses which leads to a better approximation of the recirculation zone and flow physics. A hybrid numerical scheme has also been developed for use with DDES; this blends an upwind based scheme and a centred scheme based explicitly on the blending function of the DDES.
    Original languageEnglish
    Title of host publicationJournal of Physics: Conference Series|J. Phys. Conf. Ser.
    Volume318
    DOIs
    Publication statusPublished - 2011
    Event13th European Turbulence Conference, ETC13 - Warsaw
    Duration: 1 Jul 2011 → …

    Conference

    Conference13th European Turbulence Conference, ETC13
    CityWarsaw
    Period1/07/11 → …

    Fingerprint

    Dive into the research topics of 'A hybrid numerical scheme for a new formulation of delayed detached-eddy simulation (DDES) based on elliptic relaxation'. Together they form a unique fingerprint.

    Cite this