Schwarz alternating domain decomposition approach for the solution of mixed heat convection flow problems based on the method of approximate particular solutions

Carlos A. Bustamante, Henry Power, Whady F. Florez

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The incompressible two-dimensional Navier-Stokes equations including thermal energy balance equation are solved by the recently developed Method of Approximate Particular Solutions (MAPS). In a previous authors' work this method was implemented to solve the two-dimensional Stokes equations by employing the pressure and velocity particular solutions obtained by Oseen's decomposition with the Multiquadric (MQ) RBF as non-homogeneous term. A pressure-velocity linkage strategy is not required since the pressure particular solutions are obtained from the velocity ones. In the present contribution, the Navier-Stokes equations with Boussinesq approximation are solved by linearizing the convective term in a Picard iterative scheme. With the velocity values obtained at each of the Picard iterations, the energy conservation equation is solved by the MAPS by approximating temperature with the particular solutions of a Poisson problem with the MQ as a forcing term. With the aim of improving the computational efficiency of the global strategy, the two-dimensional domain is split into overlapped rectangular subdomains where the Schwarz Alternating Algorithm is employed to find a solution by using velocity and temperatures values from neighbouring zones as boundary conditions. The mixed convection lid-driven cavity flow problem is solved for moderate Reynolds and low Richardson numbers with the aim of validating the proposed method.

Original languageEnglish
Title of host publicationComputational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013
PublisherInternational Center for Numerical Methods in Engineering
Pages1280-1291
Number of pages12
ISBN (Print)9788494140761
StatePublished - 2013
Externally publishedYes
Event5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2013 - Santa Eulalia, Ibiza Island, Spain
Duration: 17 Jun 201319 Jun 2013

Publication series

NameComputational Methods for Coupled Problems in Science and Engineering V - A Conference Celebrating the 60th Birthday of Eugenio Onate, COUPLED PROBLEMS 2013

Conference

Conference5th International Conference on Computational Methods for Coupled Problems in Science and Engineering, COUPLED PROBLEMS 2013
Country/TerritorySpain
CitySanta Eulalia, Ibiza Island
Period17/06/1319/06/13

Keywords

  • Applications
  • Computing methods
  • Coupled problems
  • Instructions
  • Multiphysics problems

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