Upwind implicit residual smoothing for a multi-block upwind reynolds averaged navier-stokes solver

Nair, Manoj T and Saxena, SK (2004) Upwind implicit residual smoothing for a multi-block upwind reynolds averaged navier-stokes solver. Technical Report. National Aerospace Laboratories, Bangalore, India.

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    A state-of-the-art multi-block Reynolds Averaged Navier-Stokes (RANS) code, called MB-EURANIUM, has been recently developed at National Aerospace Laboratories,13; Bangalore for numerical simulation of complex hypersonic flows. It employs Total Variation Diminishing (TVD) formulation of Roex2019;s Riemann solver based on Monotone13; Upwind Scheme for Conservation Laws (MUSCL) within the the framework of cell centered finite volume approach and ideal gas assumption to discretize the Euler terms. The viscous terms are central differenced as usual. The time term is discretized using a three stage Runge-Kutta time-stepping scheme. Turbulent flow is simulated employing the Baldwin-Lomax model of turbulence. Local time-stepping is used to accelerate the convergence to steady state. The code has been validated on a number of test cases for which reliable experimental data is available. The aim of the present work is to incorporate grid sequencing and a ormulation of Upwind Implicit Residual Smoothing (UIRS) into the code MB-EURANIUM to further improve its convergence acceleration quality. The effectiveness of these devices in accelerating convergence to steady state is demonstrated by computing hypersonic flow past a blunt-body.

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Upwind implicit residual smoothing;RANS;Roex2019;s riemann solver
    Subjects: ENGINEERING > Fluid Mechanics and Thermodynamics
    Division/Department: Computational and Theoretical Fluid Dynamics Division, Computational and Theoretical Fluid Dynamics Division
    Depositing User: Ms Indrani V
    Date Deposited: 10 Jul 2006
    Last Modified: 24 May 2010 09:40
    URI: http://nal-ir.nal.res.in/id/eprint/1010

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