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Numerical Investigation of Active Flow Control Around a Generic Truck A-Pillar

Large Eddy Simulations (LES) are conducted to study the actuated flow field around a bluff body. The model is a simplified section of a truck. The aim of the work is to model the separation of the flow acting at the front rounded corners, the so called A-pillars, and to minimize the separation of th...

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Detalles Bibliográficos
Autores principales: Minelli, G., Krajnović, S., Basara, B., Noack, B. R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Netherlands 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6109953/
https://www.ncbi.nlm.nih.gov/pubmed/30174546
http://dx.doi.org/10.1007/s10494-016-9760-3
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author Minelli, G.
Krajnović, S.
Basara, B.
Noack, B. R.
author_facet Minelli, G.
Krajnović, S.
Basara, B.
Noack, B. R.
author_sort Minelli, G.
collection PubMed
description Large Eddy Simulations (LES) are conducted to study the actuated flow field around a bluff body. The model is a simplified section of a truck. The aim of the work is to model the separation of the flow acting at the front rounded corners, the so called A-pillars, and to minimize the separation of the flow by means of Zero Net Mass Flux synthetic jets. LES data show the interaction of the flow main structures, the separation mechanism and the effects of the actuation on the flow field. The flow is post processed using modal and frequency decompositions. Relevant results in terms of drag reduction were observed for the actuated flow. The principle flow mechanisms are discussed and an optimal actuation frequency, in terms of induced fluctuations and drag reduction, is identified.
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spelling pubmed-61099532018-08-31 Numerical Investigation of Active Flow Control Around a Generic Truck A-Pillar Minelli, G. Krajnović, S. Basara, B. Noack, B. R. Flow Turbul Combust Article Large Eddy Simulations (LES) are conducted to study the actuated flow field around a bluff body. The model is a simplified section of a truck. The aim of the work is to model the separation of the flow acting at the front rounded corners, the so called A-pillars, and to minimize the separation of the flow by means of Zero Net Mass Flux synthetic jets. LES data show the interaction of the flow main structures, the separation mechanism and the effects of the actuation on the flow field. The flow is post processed using modal and frequency decompositions. Relevant results in terms of drag reduction were observed for the actuated flow. The principle flow mechanisms are discussed and an optimal actuation frequency, in terms of induced fluctuations and drag reduction, is identified. Springer Netherlands 2016-08-30 2016 /pmc/articles/PMC6109953/ /pubmed/30174546 http://dx.doi.org/10.1007/s10494-016-9760-3 Text en © The Author(s) 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Article
Minelli, G.
Krajnović, S.
Basara, B.
Noack, B. R.
Numerical Investigation of Active Flow Control Around a Generic Truck A-Pillar
title Numerical Investigation of Active Flow Control Around a Generic Truck A-Pillar
title_full Numerical Investigation of Active Flow Control Around a Generic Truck A-Pillar
title_fullStr Numerical Investigation of Active Flow Control Around a Generic Truck A-Pillar
title_full_unstemmed Numerical Investigation of Active Flow Control Around a Generic Truck A-Pillar
title_short Numerical Investigation of Active Flow Control Around a Generic Truck A-Pillar
title_sort numerical investigation of active flow control around a generic truck a-pillar
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6109953/
https://www.ncbi.nlm.nih.gov/pubmed/30174546
http://dx.doi.org/10.1007/s10494-016-9760-3
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