Numerical simulation of nonlinear waves in the wake of an axisymmetric bluff body

V. Schwarz, H. Bestek, Hermann F Fasel

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

6 Scopus citations

Abstract

The streamwise evolution of three-dimensional disturbances in the wake of a cylindrical, axisymmetric bluff body is investigated using direct numerical simulations based on the complete Navier-Stokes equations. In addition to the Navier-Stokes simulations linear stability analysis was applied to de-termine local stability characteristics of the steady axisymmetric base flow. In this paper the results from simulations at two different Reynolds numbers ReD = 1000 (case A) and ReD=500 (case B) (based on the body diameter and freestream velocity) are analyzed and compared in detail. For case A the temporal behaviour of the flow field suggests the onset of deterministic chaos in the wake, while the temporal behaviour for case B was found to be periodic over a long time.

Original languageEnglish (US)
Title of host publicationAIAA Fluid Dynamics Conference, 1994
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
StatePublished - 1994
EventAIAA Fluid Dynamics Conference, 1994 - Colorado Springs, United States
Duration: Jun 20 1994Jun 23 1994

Other

OtherAIAA Fluid Dynamics Conference, 1994
CountryUnited States
CityColorado Springs
Period6/20/946/23/94

ASJC Scopus subject areas

  • Aerospace Engineering
  • Engineering (miscellaneous)

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