Lagrangian block simulation of buoyancy at turbulence interfaces

dc.contributor.authorChu, Vincent H.
dc.contributor.authorAltai, Wihel
dc.date.accessioned2015-04-09T07:56:33Z
dc.date.available2015-04-09T07:56:33Z
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.abstractSimulations of turbulent interfaces produced by positive and negative buoyancy are conducted by moving blocks of fluid in the direction of the flow. The second moment of the blocks increases at a rate proportional to the diffusivity. The block simulation is free of numerical oscillations. Unlike most classical methods, the error associated with Lagrangian block simulation is not cumulative. Artificial diffusion error is negligible. The non-diffusive Lagrangian block simulations have provided reliable data to evaluate the performance of (i) sub-grid scale modelling and (ii) K-ε modelling of turbulent flow under the opposing influence of buoyancy.en_ZA
dc.description.librariancf2015en_ZA
dc.format.extent8 pagesen_ZA
dc.format.mediumPDFen_ZA
dc.identifier.citationChu, VH, Altai, W 2014, 'Lagrangian block simulation of buoyancy at turbulence interfaces', 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/2263/44279
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.subjectLagrangian block simulationen_ZA
dc.subjectTurbulent interfacesen_ZA
dc.subjectBuoyancyen_ZA
dc.subjectFluid flowen_ZA
dc.subjectPerformanceen_ZA
dc.subjectSub-grid scale modellingen_ZA
dc.subjectK-ε modellingen_ZA
dc.titleLagrangian block simulation of buoyancy at turbulence interfacesen_ZA
dc.typePresentationen_ZA

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