Riemann-Problem and Level-Set Approaches forHomentropic Two-Fluid Flow Computations
نویسندگان
چکیده
Riemann-Problem and Level-Set Approaches for Homentropic Two-Fluid Flow Computations B. Koren,∗ M. R. Lewis,∗,1 E. H. van Brummelen,∗,2 and B. van Leer†,1 ∗CWI, P.O. Box 94079, 1090 GB Amsterdam, The Netherlands; and †University of Michigan, Department of Aerospace Engineering, Ann Arbor, Michigan 48109-2140 E-mail: [email protected], [email protected], [email protected], and [email protected]
منابع مشابه
Riemann-problem and Level-set Approaches for Two-fluid Flow Computations I. Linearized Godunov Scheme Mas Modelling, Analysis and Simulation Riemann-problem and Level-set Approaches for Two-fluid Flow Computations I. Linearized Godunov Scheme
A nite-volume method is presented for the computation of compressible ows of two immiscible uids at very di erent densities. The novel ingredient in the method is a twouid linearized Godunov scheme, allowing for ux computations in case of di erent uids (e.g., water and air) left and right of a cell face. A level-set technique is employed to distinguish between the two uids. The level-set equati...
متن کاملModelling, Analysis and Simulation Riemann-problem and level-set approaches for two-fluid flow computations II. Fixes for solution errors near interfaces
Fixes are presented for the solution errors (`pressure oscillations') that may occur near twouid interfaces when applying a capturing method. The xes are analyzed and tested. For twouid ows with arbitrarily large density ratios, a variant of the ghostuid method appears to be a perfect remedy. Results are presented for compressible water-air ows. The results are promising for a further elaborati...
متن کاملNumerical Simulation of Shock-Wave/Boundary/Layer Interactions in a Hypersonic Compression Corner Flow
Numerical results are presented for the shock-boundary layer interactions in a hypersonic flow over a sharp leading edge compression corner. In this study, a second- order Godunov type scheme based on solving a Generalized Riemann Problem (GRP) at each cell interface is used to solve thin shear layer approximation of laminar Navier-Stokes (N-S) equations. The calculated flow-field shows general...
متن کاملA Real Ghost Fluid Method for the Simulation of Multimedium Compressible Flow
In the previous ghost fluid methods (GFMs) developed, the focus is on the definition of ghost fluid states while the pressure and velocity in the real fluid sides are taken for granted, except for the correction made to the density at the real fluid nodes next to the interface to overcome the possible problems related to overheating. It has been found that such GFMs encounter many difficulties ...
متن کاملAn HLLC Solver for Relativistic Flows
We present an extension of the HLLC approximate Riemann solver by Toro, Spruce and Speares to the relativistic equations of fluid dynamics. The solver retains the simplicity of the original two-wave formulation proposed by Harten, Lax and van Leer (HLL) but it restores the missing contact wave in the solution of the Riemann problem. The resulting numerical scheme is computationally efficient, r...
متن کامل