Lagrangian block simulation of buoyancy at turbulence interfaces

Chu, Vincent H.; Altai, Wihel

dc.contributor.author	Chu, Vincent H.
dc.contributor.author	Altai, Wihel
dc.date.accessioned	2015-04-09T07:56:33Z
dc.date.available	2015-04-09T07:56:33Z
dc.date.issued	2014
dc.description.abstract	Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014.	en_ZA
dc.description.abstract	Simulations 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.librarian	cf2015	en_ZA
dc.format.extent	8 pages	en_ZA
dc.format.medium	PDF	en_ZA
dc.identifier.citation	Chu, 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.isbn	97817759206873
dc.identifier.uri	http://hdl.handle.net/2263/44279
dc.publisher	International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics	en_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.subject	Lagrangian block simulation	en_ZA
dc.subject	Turbulent interfaces	en_ZA
dc.subject	Buoyancy	en_ZA
dc.subject	Fluid flow	en_ZA
dc.subject	Performance	en_ZA
dc.subject	Sub-grid scale modelling	en_ZA
dc.subject	K-ε modelling	en_ZA
dc.title	Lagrangian block simulation of buoyancy at turbulence interfaces	en_ZA
dc.type	Presentation	en_ZA