The influence of the flow turbulence on the flow structure behind a sphere

dc.contributor.authorBogusławski, L
dc.date.accessioned2015-04-23T09:12:48Z
dc.date.available2015-04-23T09:12:48Z
dc.date.issued2014
dc.description.abstractPaper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014.en_ZA
dc.description.abstractFlow turbulence intensifies processes of momentum, heat and mass transfer in a flow or on surfaces immersed in such a flow. This paper presents results of experimental investigations of the influence of the inflow turbulence on the velocity and the shear stress distributions behind the sphere for a selected distance. It is assumed that a flow structure behind the sphere is dependent on the flow structure in a boundary layer on a sphere that is under the inflow turbulence control. The inflow turbulence changes the pattern of distributions of the average pressure and its turbulent fluctuations on the sphere surface. Because of that the flow behind the sphere becomes dependent on the intensity of the flow turbulence in front of the sphere area. Radial profiles of the average velocity behind the sphere becomes more flat as the inflow turbulence increases. The shear stress profiles and the profiles of velocity fluctuations are also modified by the inflow turbulence level. When the intensity of the inflow turbulence increases the radial profiles of uv correlations representing the mixing properties of the flow behind the sphere get more flat but reach larger radius.en_ZA
dc.description.librariandc2015en_ZA
dc.format.extent4 pagesen_ZA
dc.format.mediumPDFen_ZA
dc.identifier.citationBogusławski, L 2014, 'The influence of the flow turbulence on the flow structure behind a sphere', Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014.en_ZA
dc.identifier.isbn97817759206873
dc.identifier.urihttp://hdl.handle.net/2263/44535
dc.publisherInternational Conference on Heat Transfer, Fluid Mechanics and Thermodynamicsen_ZA
dc.rights© 2014 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria.en_ZA
dc.subjectFlow turbulenceen_ZA
dc.subjectInflow turbulenceen_ZA
dc.subjectShear stress distributionsen_ZA
dc.subjectTurbulent fluctuationsen_ZA
dc.subjectVelocity fluctuationsen_ZA
dc.titleThe influence of the flow turbulence on the flow structure behind a sphereen_ZA
dc.typePresentationen_ZA

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