Pressure boundary conditions for incompressible flow using unstructured meshes

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Numerical Heat Transfer. Part B, Fundamentals

DOI:https://doi.org/10.1080/10407799708915010· OSTI ID:556655

Mathur, S R; Murthy, J Y ^[1]

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1. Fluent, Inc., Lebanon, NH (United States)

A large variety of industrial problems require the specification of pressure boundary conditions. In many industrial pipe flows, for example, the mass flow rate is not known a priori; the flow is driven by a specified pressure difference between inlet and outlet. This article presents a numerical method for computing incompressible flows with given pressure boundary conditions. Unstructured meshes composed of arbitrary polyhedra are considered in a cell-centered, co-located pressure-velocity formulation. The SIMPLE algorithm of Patankar and Spalding is extended to develop correction equations for boundary static pressure and boundary mass flux through an added-dissipation scheme. The procedure is validated against published benchmarks and shown to perform satisfactorily.

• Sponsoring Organization: USDOE
• OSTI ID: 556655
• Journal Information: Numerical Heat Transfer. Part B, Fundamentals, Journal Name: Numerical Heat Transfer. Part B, Fundamentals Journal Issue: 3 Vol. 32; ISSN 1040-7790; ISSN NHBFEE
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
42 ENGINEERING
BOUNDARY CONDITIONS
INCOMPRESSIBLE FLOW
INDUSTRIAL PLANTS
MASS TRANSFER
MESH GENERATION
NUMERICAL SOLUTION
PIPES
PRESSURE GRADIENTS