International Journal of Rotating Machinery

International Journal of Rotating Machinery / 2003 / Article

Open Access

Volume 9 |Article ID 961548 | https://doi.org/10.1155/S1023621X03000447

Namhyo Kim, David L. Rhode, "Refined Turbulence Modeling for Swirl Velocity in Turbomachinery Seals", International Journal of Rotating Machinery, vol. 9, Article ID 961548, 9 pages, 2003. https://doi.org/10.1155/S1023621X03000447

Refined Turbulence Modeling for Swirl Velocity in Turbomachinery Seals

Abstract

A generalized new form of the rotation-sensitive source term coefficient previously proposed by Bardina and colleagues as an extension of the standard k-ε turbulence model was developed. The proposal made by Bardina and colleagues focused on rotating flows without significant turbulence generation, and the result was a negative-valued constant coefficient. The new functional form developed here for the coefficient has global as well as local dependence. The new model predictions of laser Doppler anemometry measurements of swirling flows in labyrinth seals were compared with the swirl distribution measurements and with the standard k-ε model (i.e., no rotation source term) predictions. It was found that for the labyrinth seal cases for which detailed measurements are available, the standard k-ε model gives unsatisfactory predictions, whereas the new model gives significantly improved predictions.

Copyright © 2003 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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