Investigation of boundary-layer separation for lifting surfaces

A. Gross, W. Balzer, H. F. Fasel

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

Abstract

Flow separation from lifting surfaces such as airfoils is undesirable as it deteriorates performance. For example, when airfoils that are designed for large Reynolds numbers are operated at smaller off-design Reynolds numbers, laminar separation can occur. Laminar separation typically leads to transition and reattachment. Transition is influenced by factors, such as free-stream turbulence and wall roughness. Transition and reattachment affect the circulation and, thereby, separation itself. We are employing computational fluid dynamics for investigating the fundamental mechanisms of separation and transition for lifting surfaces. Using highly-resolved direct numerical simulations, we are investigating fundamental aspects of separation and transition in the presence of free-stream turbulence for canonical separation bubbles. In parallel, we are carrying out hybrid turbulence model simulations of an entire airfoil at a larger chord Reynolds number. The combined approach will advance both physical understanding and modeling capabilities, and thus provide a solid platform for the development of separation control strategies for practical applications.

Original languageEnglish (US)
Title of host publicationProceedings - 2010 DoD High Performance Computing Modernization Program Users Group Conference, HPCMP UGC 2010
Pages35-44
Number of pages10
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

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Keywords

  • airfoil
  • free-stream turbulence
  • hybrid turbulence model
  • separation
  • transition

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Science Applications

Cite this

Gross, A., Balzer, W., & Fasel, H. F. (2011). Investigation of boundary-layer separation for lifting surfaces. In Proceedings - 2010 DoD High Performance Computing Modernization Program Users Group Conference, HPCMP UGC 2010 (pp. 35-44). [6017996] (Proceedings - 2010 DoD High Performance Computing Modernization Program Users Group Conference, HPCMP UGC 2010). https://doi.org/10.1109/HPCMP-UGC.2010.9