Incompressible flow solution on unstructured triangular meshes

Journal Article · Thu Sep 01 00:00:00 EDT 1994 · Numerical Heat Transfer. Part B, Fundamentals; (United States)

DOI:https://doi.org/10.1080/10407799408914926· OSTI ID:6908548

Pan, D; Lu, C H; Cheng, J C ^[1]

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1. National Cheng Kung Univ., Tainan (Taiwan, Province of China). Inst. of Aeronautics and Astronautics

An incompressible Navier-Stokes solver on unstructured triangular mesh is developed and tested. The artificial compressibility method is employed to render the system hyperbolic. The temperature equation and the source terms representing thermal buoyancy forces are included in the system via Boussinesq approximation. A Godunov-type second-order upwind finite-volume method is used to obtain inviscid fluxes. The viscous terms are computed by a finite-volume formulation which can be second-order accurate for a large class of triangular cells. To maintain numerical stability and efficiency, an implicit approximate LU factorization (ALU) scheme is used for time integration. Time accuracy is assured by subiterations at each time step. Various force-convection and natural-convection problems are computed to validate the proposed scheme.

• OSTI ID: 6908548
• Journal Information: Numerical Heat Transfer. Part B, Fundamentals; (United States), Vol. 26:2; ISSN 1040-7790
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
INCOMPRESSIBLE FLOW
CALCULATION METHODS
MESH GENERATION
NATURAL CONVECTION
VISCOUS FLOW
CONVECTION
ENERGY TRANSFER
FLUID FLOW
HEAT TRANSFER
MASS TRANSFER
420400* - Engineering- Heat Transfer & Fluid Flow
990200 - Mathematics & Computers