ALE-VMS formulation for stratified turbulent incompressible flows with applications

Y. Bazilevs, A. Korobenko, J. Yan, A. Pal, S. M.I. Gohari, S. Sarkar

Research output: Contribution to journalArticlepeer-review

Abstract

A numerical formulation for incompressible flows with stable stratification is developed using the framework of variational multiscale methods. In the proposed formulation, both density and temperature stratification are handled in a unified manner. The formulation is augmented with weakly-enforced essential boundary conditions and is suitable for applications involving moving domains, such as fluid-structure interaction. The methodology is tested using three numerical examples ranging from flow-physics benchmarks to a simulation of a full-scale offshore wind-turbine rotor spinning inside an atmospheric boundary layer. Good agreement is achieved with experimental and computational results reported by other researchers. The wind-turbine rotor simulation shows that flow stratification has a strong influence on the dynamic rotor thrust and torque loads.

Original languageEnglish (US)
Pages (from-to)2349-2375
Number of pages27
JournalMathematical Models and Methods in Applied Sciences
Volume25
Issue number12
DOIs
StatePublished - Nov 26 2015
Externally publishedYes

Keywords

  • ALE-VMS
  • atmospheric boundary layer
  • internal gravity waves
  • self-propelled wake
  • stratified flow
  • turbulence
  • wind turbine

ASJC Scopus subject areas

  • Modeling and Simulation
  • Applied Mathematics

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