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Eindige element metodes van termo-vloei

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dc.contributor.advisor Du Toit CG, Prof en
dc.contributor.author Du Toit A en
dc.date.accessioned 2016-09-22T07:17:27Z
dc.date.available 2016-09-22T07:17:27Z
dc.date.created 1996 en
dc.date.submitted 1998 en
dc.identifier.uri http://hdl.handle.net/20.500.11892/11375
dc.description.abstract The conventional finite-element formulation for solving velocities, pressures and temperatures requires that the governing equations be solved simultaneously. This constraint has the disadvantage that the order of interpolation of the pressures must be one order less than that needed for the velocities and that a large sets of equations has to be solved. Several methods have been introduced in the past to eliminate these constraints. This dissertation describes an algorithm which is based on the scheme presented by Rice et al. It precludes spurious pressure modes from the pressure solution and employs equal-order interpolation for all the variables. This method uncouples the various sets of equations. From the momentum equations the velocities are obtained and the pressure is obtained via the continuity equation by incorporating velocity-pressure gradient relations. The energy equation is also solved to allow for non-isothermal problems. The momentum equations and energy equations are weighted using the Streamline Upwind Petrov-Galerkin weight functions (SUPG) in two ways: first only on the convective terms and second on all the terms. The momentum and energy equations are rewritten in symmetric form, using the SIMPLEST algorithm, to provide the sets of linear equations which are solved iteratively. en
dc.language Afrikaans en
dc.subject Mechanical engineering en
dc.title Eindige element metodes van termo-vloei en
dc.type Masters degree en
dc.description.degree MIng en

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