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 |
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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 |
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dc.identifier.uri |
http://hdl.handle.net/2263/44279 |
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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 |