Lateral Vortex Dynamics behind Ahmed Body

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F10%3A00352476" target="_blank" >RIV/61388998:_____/10:00352476 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Lateral Vortex Dynamics behind Ahmed Body
Original language description
Structure of the wake behind the Ahmed body is strongly affected by slant angle of the rear window. Besides the classical wake consisting from back-flow turbulent region, the vortex wake system takes the form of two counter-rotary lateral vortices starting at a separation line on the roof with an open separation bulb located at the upper part of the rear window. The dynamical behavior of the longitudinal vortex pair is studied in details experimentally using the Stereo Time-Resolved PIV method. The Bi-Orthogonal Decomposition method (BOD) is utilized to calculate energetic modes, while Principal Interaction Patterns method (PIPs) is used for evaluation modes according to their stability features. Two variants of Ahmed Body with slat angle 25 and 35 degree are investigated respectively. Comparison shows considerable differences in the vortex pair dynamics of the cases in question.
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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