Journal ArticleDOI
Calculation of transonic internal flows using an efficient high-resolution upwind scheme
Gecheng Zha,Zongjun Hu +1 more
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In this article, a new upwind scheme based on the concept of convective upwind and split pressure is developed, which has low diffusion to resolve accurately wall boundary layers and is able to capture crisp shock waves and exact contact discontinuities.Abstract:
A new efficient upwind scheme based on the concept of convective upwind and split pressure is developed. The upwinding of the convective term and the pressure split are consistent with their characteristic directions. The scheme has low diffusion to resolve accurately wall boundary layers and is able to capture crisp shock waves and exact contact discontinuities. The accuracy of the scheme is compared with other popularly used schemes including the Roe scheme, the Liou's latest advection upstream splitting method scheme (AUSM + ), the Van Leer scheme, and the Van Leer-Hanel scheme. The new scheme is tested for the one-dimensional Sod shock tube problem, one-dimensional slowly moving contact surface, supersonic flat plate laminar boundary layer, a transonic nozzle with oblique shock waves and reflections that do not align with the mesh lines, and a transonic inlet diffuser with shock wave/turbulent boundary-layer interactionread more
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Journal ArticleDOI
An improved low diffusion E-CUSP upwind scheme
TL;DR: In this paper, an improved low diffusion E-CUSP (LDE) scheme is presented, which can capture crisp shock profile and exact contact surface, and several numerical cases are presented to demonstrate the accuracy and robustness of the new scheme.
Journal ArticleDOI
General Subdomain Boundary Mapping Procedure for Structured Grid Implicit CFD Parallel Computation
TL;DR: A general subdomain boundary mapping procedure has been developed for arbitrary topology multiblock structured grids with grid points matched on subdomain boundaries and it is shown that this general mapping algorithm is robust and has high parallel computing efficiency.
Proceedings ArticleDOI
A general sub-domain boundary mapping procedure for structured grid cfd parallel computation
Baoyuan Wang,Gecheng Zha +1 more
TL;DR: A general sub-domain boundary mapping procedure has been developed for arbitrary topology multi-block structured grids with grid points matched on sub- domain boundaries and is applied to parallelize an in house 3D Navier-Stokes code.
Journal ArticleDOI
Fully coupled fluid–structural interactions using an efficient high resolution upwind scheme
Xiang ying Chen,Gecheng Zha +1 more
TL;DR: In this article, the E-CUSP upwind scheme is extended to the moving grid system and is applied to calculate the flow-induced vibration based on a fully coupled fluid-structure interaction methodology.
Proceedings ArticleDOI
Calculation of Transonic Flows Using WENO Method with a Low Diffusion E-CUSP Upwind Scheme
TL;DR: In this article, a low-difiusion E-CUSP (LDE) scheme is applied with 5th order WENO scheme in order to capture crisp shock proflle and exact contact surface.
References
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Journal ArticleDOI
Approximate Riemann Solvers, Parameter Vectors, and Difference Schemes
TL;DR: In this article, it is shown that these features can be obtained by constructing a matrix with a certain property U, i.e., property U is a property of the solution of the Riemann problem.
Proceedings ArticleDOI
Thin-layer approximation and algebraic model for separated turbulent flows
B. Baldwin,H. Lomax +1 more
TL;DR: In this article, an algebraic turbulence model for two-and three-dimensional separated flows is specified that avoids the necessity for finding the edge of the boundary layer, and compared with experiment for an incident shock on a flat plate, separated flow over a compression corner, and transonic flow over an airfoil.
Journal ArticleDOI
On Upstream Differencing and Godunov-Type Schemes for Hyperbolic Conservation Laws
TL;DR: This paper reviews some of the recent developments in upstream difference schemes through a unified representation, in order to enable comparison between the various schemes.
Journal Article
Finite difference methods for numerical computation of discontinous solutions of the equations of fluid dynamics
Journal ArticleDOI
A survey of several finite difference methods for systems of nonlinear hyperbolic conservation laws
Gary A. Sod,Gary A. Sod +1 more
TL;DR: In this paper, the finite difference methods of Godunov, Hyman, Lax and Wendroff (two-step), MacCormack, Rusanov, the upwind scheme, the hybrid scheme of Harten and Zwas, the antidiffusion method of Boris and Book, and Glimm's method, a random choice method, are discussed.