Anhp-adaptive unstructured finite volume solver for compressible flows

2017 ◽  
Vol 85 (10) ◽  
pp. 563-582 ◽  
Author(s):  
Alireza Jalali ◽  
Carl Ollivier-Gooch
Keyword(s):  
Finite Volume ◽  
Compressible Flows

scholarly journals Gas kinetic flux solver based high-order finite-volume method for simulation of two-dimensional compressible flows

2021 ◽  
Vol 104 (1) ◽  
Author(s):  
L. M. Yang ◽  
C. Shu ◽  
Z. Chen ◽  
Y. Y. Liu ◽  
J. Wu ◽  
...  
Keyword(s):  
Finite Volume Method ◽  
Finite Volume ◽  
Compressible Flows ◽  
High Order ◽  
Two Dimensional ◽  
Volume Method

An Advanced Unstructured-Grid Finite-Volume Design System for Gas Turbine Combustion Analysis

2013 ◽  
Author(s):  
M. S. Anand ◽  
R. Eggels ◽  
M. Staufer ◽  
M. Zedda ◽  
J. Zhu
Keyword(s):  
Finite Volume ◽  
Compressible Flows ◽  
Turbulence Models ◽  
General Purpose ◽  
Navier Stokes ◽  
Design System ◽  
Analysis Tool ◽  
Combustion Chemistry ◽  
Finite Volume Approach ◽  
Complicated Geometries

A general-purpose combustion Computational Fluid Dynamics (CFD) design analysis tool has been developed. The method is pressure-based and applicable to both incompressible and compressible flows. The unstructured finite-volume approach used can take arbitrary shapes of mesh cells to resolve complicated geometries. Turbulence is simulated either by Reynolds-Averaged Navier-Stokes (RANS) or by Large Eddy Simulation (LES) approaches. Combustion is modeled by various combinations of combustion chemistry and combustion-turbulence models including transport probability density function (PDF) model. A Lagrangian approach is used to simulate fuel spray droplet. The resulting tool has being used in routine combustor simulations for a variety of commercial and military combustor development programs. Application examples presented include simulations of several combustors and comparisons with available rig data.

A Moving-Mesh Finite-Volume Scheme for Compressible Flows

2001 ◽  
pp. 705-710 ◽  
Author(s):  
Kenichi Matsuno ◽  
Kiyotaka Mihara ◽  
Nobuyuki Satofuka
Keyword(s):  
Finite Volume ◽  
Compressible Flows ◽  
Moving Mesh ◽  
Finite Volume Scheme ◽  
Volume Scheme

An accurate shock-capturing scheme based on rotated-hybrid Riemann solver

2016 ◽  
Vol 26 (5) ◽  
pp. 1310-1327 ◽  
Author(s):  
Ghislain Tchuen ◽  
Pascalin Tiam Kapen ◽  
Yves Burtschell
Keyword(s):  
Compressible Flow ◽  
Finite Volume ◽  
Compressible Flows ◽  
Navier Stokes ◽  
Shock Propagation ◽  
Riemann Solver ◽  
Simple Task ◽  
Content Type ◽  
Flow Problems ◽  
Roe Solver

Purpose – The purpose of this paper is to present a new hybrid Euler flux fonction for use in a finite-volume Euler/Navier-Stokes code and adapted to compressible flow problems. Design/methodology/approach – The proposed scheme, called AUFSRR can be devised by combining the AUFS solver and the Roe solver, based on a rotated Riemann solver approach (Sun and Takayama, 2003; Ren, 2003). The upwind direction is determined by the velocity-difference vector and idea is to apply the AUFS solver in the direction normal to shocks to suppress carbuncle and the Roe solver across shear layers to avoid an excessive amount of dissipation. The resulting flux functions can be implemented in a very simple manner, in the form of the Roe solver with modified wave speeds, so that converting an existing AUFS flux code into the new fluxes is an extremely simple task. Findings – The proposed flux functions require about 18 per cent more CPU time than the Roe flux. Accuracy, efficiency and other essential features of AUFSRR scheme are evaluated by analyzing shock propagation behaviours for both the steady and unsteady compressible flows. This is demonstrated by several test cases (1D and 2D) with standard finite-volume Euler code, by comparing results with existing methods. Practical implications – The hybrid Euler flux function is used in a finite-volume Euler/Navier-Stokes code and adapted to compressible flow problems. Originality/value – The AUFSRR scheme is devised by combining the AUFS solver and the Roe solver, based on a rotated Riemann solver approach.

A Central Difference Finite Volume Lattice Boltzmann Method for Simulation of 2D Inviscid Compressible Flows on Triangular Meshes

2018 ◽  
Author(s):  
Alireza Karbalaei ◽  
Kazem Hejranfar
Keyword(s):  
Boltzmann Equation ◽  
Lattice Boltzmann Method ◽  
Finite Volume ◽  
Lattice Boltzmann ◽  
Compressible Flows ◽  
Lattice Boltzmann Equation ◽  
Triangular Meshes ◽  
Central Difference ◽  
Inviscid Compressible Flows ◽  
Boltzmann Method

In this work, a central difference finite volume lattice Boltzmann method (CDFV-LBM) is developed to compute 2D inviscid compressible flows on triangular meshes. The numerical solution procedure adopted here for solving the lattice Boltzmann equation is nearly the same as the procedure used by Jameson et al. for the solution of the Euler equations. The integral form of the lattice Boltzmann equation using the Gauss divergence theorem is applied on a triangular cell and the numerical fluxes on each edge of the cell are set to the average of their values at the two adjacent cells. Appropriate numerical dissipation terms are added to the discretized lattice Boltzmann equation to have a stable solution. The Boltzmann equation is discretized in time using the fourth-order Runge-Kutta scheme. The computations are performed for three problems, namely, the isentropic vortex and the supersonic flow around a NACA0012 airfoil and over a circular-arc bump. The effect of changing the grid resolution and the dissipation coefficients on the accuracy of the results is also studied. Results obtained by applying the CDFV-LBM are compared with the available numerical results which show good agreement.

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