Non-symmetric bi-stable flow around the Ahmed body
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- 作者：W. Meilea ; T. Ladineka ; G. Brenna ; brenn@fluidmech.tu-graz.ac.at" class="auth_mail" title="E-mail the corresponding author ; guenter.brenn@tugraz.at" class="auth_mail" title="E-mail the corresponding author ; A. Reppenhagenb ; A. Fuchsb
- 关键词：Ahmed body ; Bi-stable flow ; Non-symmetric flow ; Aerodynamic loads
- 刊名：International Journal of Heat and Fluid Flow
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：57
- 期：Complete
- 页码：34-47
- 全文大小：6596 K
文摘
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The non-symmetric bi-stable flow around the Ahmed body is investigated experimentally.
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Bi-stability, described for symmetric flow by Cadot and co-workers, was found in nonsymmetric flow also.
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The flow field randomly switches between two states.
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The flow is subject to a spanwise instability identified by Cadot and co-workers for symmetric flow.
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Aerodynamic forces fluctuate strongly due to the bi-stability.