Importance of Sub-Grid Scale Modeling for Accurate Aerodynamic Simulations

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Fältnamn	Indikatorer	Metadata
000		03131naa a2200349 4500
001		oai:DiVA.org:liu-170754
003		SwePub
008		201020s2021 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1707542 URI
024	7	a https://doi.org/10.1115/1.40483512 DOI
040		a (SwePub)liu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Ekman, Petter,d 1988-u Linköpings universitet,Mekanisk värmeteori och strömningslära,Tekniska fakulteten4 aut0 (Swepub:liu)petek88
245	1 0	a Importance of Sub-Grid Scale Modeling for Accurate Aerodynamic Simulations
264		c 2020-10-13
264	1	b ASME,c 2021
338		a electronic2 rdacarrier
520		a The Ahmed body is one of the most well-investigated vehicle bodies for aerodynamic purposes. Despite its simple geometry, the flow around the body, especially at the rear, is very complex as it is dominated by a large wake with strong interaction between vortical structures. In this study, the flow around the 25 deg Ahmed body has been investigated using large eddy simulations and compared to high-resolution particle image velocimetry (PIV) measurements. Special emphasis was put on studying three commonly used sub-grid scale (SGS) models and their ability to capture vortical structures around the Ahmed body. The ability of the SGS models to capture the near-wall behavior and small-scale dissipation is crucial for capturing the correct flow field. Very good agreement between simulations and PIV measurements were seen when using the dynamic Smagorinsky-Lilly and the wall-adopting local eddy-viscosity SGS models, respectively. However, the standard Smagorinsky-Lilly model was not able to capture the flow patterns when compared to the PIV measurements due to shortcomings in the near-wall modeling in the standard Smagorinsky-Lilly model, resulting in overpredicted separation.
650	7	a TEKNIK OCH TEKNOLOGIERx Maskinteknikx Strömningsmekanik och akustik0 (SwePub)203062 hsv//swe
650	7	a ENGINEERING AND TECHNOLOGYx Mechanical Engineeringx Fluid Mechanics and Acoustics0 (SwePub)203062 hsv//eng
700	1	a Venning, Jamesu Department of Mechanical and Aerospace Engineering, Monash University, Victoria, Australia4 aut
700	1	a Virdung, Torbjörnu Volvo Car Corporation Department, Göteborg, Sweden4 aut
700	1	a Karlsson, Matts,d 1965-u Linköpings universitet,Mekanisk värmeteori och strömningslära,Tekniska fakulteten4 aut0 (Swepub:liu)matka16
710	2	a Linköpings universitetb Mekanisk värmeteori och strömningslära4 org
773	0	t Journal of Fluids Engineeringd : ASMEg 143:1q 143:1x 0098-2202x 1528-901X
856	4	u https://liu.diva-portal.org/smash/get/diva2:1477796/FULLTEXT01.pdfx primaryx Raw objecty fulltext:postprint
856	4	u https://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/143/1/011501/6593140/fe_143_01_011501.pdf
856	4 8	u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-170754
856	4 8	u https://doi.org/10.1115/1.4048351

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Av författaren/redakt...: Ekman, Petter, 1 ...; Venning, James; Virdung, Torbjör ...; Karlsson, Matts, ...

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