Investigation of three-dimensional internal and external flow separation

A. Gross, R. Jacobi, H. Fasel

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

1 Scopus citations

Abstract

Flow separation is always three-dimensional despite the fact that most of the past research has focused on two-dimensional separation. The three-dimensional character of separation is particularly relevant when low-aspect ratio geometries are considered. Separation is often associated with unsteadiness, which is caused by large coherent structures that are a consequence of hydrodynamic instability mechanisms of the mean-flow. We are employing direct numerical simulations for investigating the highly-complex flow physics of three-dimensional laminar separation bubbles. The introduction of pulse disturbances allows us to probe the instability mechanisms. In parallel, we are also employing hybrid turbulence models for simulations of the turbulent flow through a square-duct, and for the Stanford University asymmetric diffuser experiments. By advancing the understanding of the fundamental mechanisms governing three-dimensional separation and by devising modeling strategies for high-Reynolds number flows, we are laying the foundation that may lead to better predictive tools and to separation control devices for practical applications.

Original languageEnglish (US)
Title of host publicationProceedings - 2010 DoD High Performance Computing Modernization Program Users Group Conference, HPCMP UGC 2010
Pages45-53
Number of pages9
DOIs
StatePublished - Oct 5 2011
Event2010 DoD High Performance Computing Modernization Program Users Group Conference, HPCMP UGC 2010 - Schaumburg, IL, United States
Duration: Jun 14 2010Jun 17 2010

Publication series

NameProceedings - 2010 DoD High Performance Computing Modernization Program Users Group Conference, HPCMP UGC 2010

Other

Other2010 DoD High Performance Computing Modernization Program Users Group Conference, HPCMP UGC 2010
CountryUnited States
CitySchaumburg, IL
Period6/14/106/17/10

Keywords

  • coherent structures
  • diffuser
  • hybrid turbulence model
  • separation
  • square-duct
  • three-dimensional

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Science Applications

Fingerprint Dive into the research topics of 'Investigation of three-dimensional internal and external flow separation'. Together they form a unique fingerprint.

  • Cite this

    Gross, A., Jacobi, R., & Fasel, H. (2011). Investigation of three-dimensional internal and external flow separation. In Proceedings - 2010 DoD High Performance Computing Modernization Program Users Group Conference, HPCMP UGC 2010 (pp. 45-53). [6017997] (Proceedings - 2010 DoD High Performance Computing Modernization Program Users Group Conference, HPCMP UGC 2010). https://doi.org/10.1109/HPCMP-UGC.2010.10