Numerical investigation of transition delay in a Mach 6 boundary layer using porous walls

C. Hader, C. Brehm, H. F. Fasel

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

1 Scopus citations

Abstract

The main emphasis of this work is to investigate the effect of the porous wall on the nonlinear stability regime and to determine if the nonlinear stages of transition are affected by porous walls. Temporal direct numerical simulations were carried out for a Mach 6.0 boundary layer on a smooth and porous wall geometry. An Immersed Interface Method was implemented in a compressible Navier-Stokes code to physically resolve the porosity. The resonance onset behavior for fundamental and subharmonic breakdown was compared. Fundamental resonance was found to be stronger than the subharmonic resonance. For highly resolved breakdown simulations a strategy was adapted where the resolution was successively increased as the flow evolved from a laminar to turbulent state. In addition, the effect of numerical filtering on the transition simulations was investigated.

Original languageEnglish (US)
Title of host publication43rd Fluid Dynamics Conference
StatePublished - Sep 11 2013
Event43rd AIAA Fluid Dynamics Conference - San Diego, CA, United States
Duration: Jun 24 2013Jun 27 2013

Publication series

Name43rd Fluid Dynamics Conference

Other

Other43rd AIAA Fluid Dynamics Conference
CountryUnited States
CitySan Diego, CA
Period6/24/136/27/13

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ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Energy Engineering and Power Technology
  • Aerospace Engineering
  • Mechanical Engineering

Cite this

Hader, C., Brehm, C., & Fasel, H. F. (2013). Numerical investigation of transition delay in a Mach 6 boundary layer using porous walls. In 43rd Fluid Dynamics Conference (43rd Fluid Dynamics Conference).