Mesh adaptation for unsteady problems via reduced order modeling

M. Fossati, M. Najafiyazdi, W. G. Habashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

2 Citations (Scopus)

Abstract

Mesh adaptation for unsteady problems is a task that may be thwarted by computational cost. In fact, unlike from steady problems, the fixed point at which grid independence is reached after multiple computational cycles of flow solution and mesh adaptation is by definition time-varying. An approach based on Reduced Order Modelling is presented to show that it is possible to reduce the computational cost of achieving grid independence at each time step of the simulation. Based on the ability to obtain solutions at a very low cost, the methodology of surrogate modeling is employed in conjunction with full CFD computations to drive the mesh adaptation process. Numerical tests are presented to show the effectiveness of this approach.

Original languageEnglish
Title of host publication20th AIAA Computational Fluid Dynamics Conference 2011
Number of pages19
DOIs
Publication statusPublished - 1 Dec 2011
Event20th AIAA Computational Fluid Dynamics Conference 2011 - Honolulu, HI, United States
Duration: 27 Jun 201130 Jun 2011

Conference

Conference20th AIAA Computational Fluid Dynamics Conference 2011
CountryUnited States
CityHonolulu, HI
Period27/06/1130/06/11

Keywords

  • computational fluid dynamics
  • CFD computation
  • computational costs
  • computational cycles
  • mesh adaptation
  • reduced order modelling
  • reduced-order modeling
  • surrogate modeling
  • unsteady problems
  • anisotropic mesh

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  • Cite this

    Fossati, M., Najafiyazdi, M., & Habashi, W. G. (2011). Mesh adaptation for unsteady problems via reduced order modeling. In 20th AIAA Computational Fluid Dynamics Conference 2011 https://doi.org/10.2514/6.2011-3692