High-order discontinuous Galerkin computation of axisymmetric transonic flows in safety relief valves
作者： F. Bassi , F. Cecchi , N. Franchina , S. Rebay , M. Savini
DOI: 10.1016/J.COMPFLUID.2011.05.015
关键词: Discontinuous Galerkin method 、 Computational fluid dynamics 、 Turbulence 、 Mathematics 、 Inviscid flow 、 Transonic 、 Mechanics 、 Classical mechanics 、 Flow (mathematics) 、 Reynolds-averaged Navier–Stokes equations 、 Riemann solver
摘要: This paper presents a discontinuous Galerkin (DG) discretization of the compressible RANS and k- ω turbulence model equations for two-dimensional axisymmetric flows. The developed code has been applied to investigate transonic flow in safety relief valves.This new DG implementation evolved from method presented [1]. An "exact" Riemann solver is used compute interface numerical inviscid flux while viscous discterization relies on BRMPS scheme [2,3]. Control oscillations high-order solutions around shocks obtained by means shock-capturing technique assessed within EU ADIGMA project [4].The spring loaded valve at several back pressures different disk lifts. predicted device capacity pressure inside its bonnet have checked against experimental data. CFD simulations allow clarify complex patterns occurring explain measured trends.
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