Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Model Reduction for a Variable Geometry Fluid Thermal Problem
Year:2011
Research Areas
  • Physics chemical and mathematical,
  • Engineering,
  • Aeronautical engineering
Information
Abstract
A methodology is presented to create reduced models of fluid thermal problems with varying geometry. The methodology is applied to the nonisothermal backward-facing step problem, depending on three parameters: the Reynolds number, the wall temperature, and the step height. Various snapshots are calculated using a computational fluid dynamics (CFD) solver in disparate grids, which are transformed into a generic grid by means of a smooth function. A proper orthogonal decomposition basis is created for these transformed snapshots, the flow variables are expanded into the resulting modes, and the reconstructed flow variable distributions are transformed back into the original grids. The associated mode amplitudes are calculated minimizing (using a genetic algo- rithm) a residual, which is defined using a limited number of grid points (which lessens the computational effort). The resulting reduced order model provides solutions that compare well with their CFD counterparts, in a much smaller CPU time.
International
Si
Congress
World Congress on Engineering 2011
960
Place
Londres
Reviewers
Si
ISBN/ISSN
978-988-19251-5-2
Start Date
06/07/2011
End Date
08/07/2011
From page
2411
To page
2416
Proceedings of the World Congress on Engineering 2011
Participants
  • Autor: Jose Manuel Vega De Prada (UPM)
  • Autor: Angel Gerardo Velazquez Lopez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Dinámica y estabilidad no lineal en ingeniería aeroespacial
  • Departamento: Fundamentos Matemáticos de la Tecnología Aeronáutica
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)