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Towards pressure gradient sensitive transitional k-kl-omega model: The natural transition for low-re airfoils

Fürst, Jiri and Islam, Mazharul and Příhoda, J. and Wood, David (2015) Towards pressure gradient sensitive transitional k-kl-omega model: The natural transition for low-re airfoils. In: Topical Problems of Fluid Mechanics 2015, 11th-13th February 2015, Prague, Czech Republic.

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Abstract

The work deals with the development of a pressure gradient sensitive variant of a three-equation RANS model for turbulent and transitional flows. The model is based on the laminar kinetic energy approach by Walters and Cokljat [1]. The revisited model [2] was successfully validated for zero or mild pressure gradient flows with the so-called bypass transition (see e.g. [2]). In the case of natural transition in adverse pressure gradient flows the model usually tends to predict the transition too late, see [3], [4], [5]. The aim of present work is to improve the model for the case of flows with very low free-stream turbulence levels with adverse pressure gradient. As a first step we focus the attention to the onset of linear instability

Item Type: Conference or Workshop Item (Plenary Papers)
Additional Information: 7416/56602
Uncontrolled Keywords: turbulence, laminar-turbulent transition, laminar kinetic energy.
Subjects: T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL500 Aeronautics
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User: Dr. Mazharul Islam
Date Deposited: 21 Apr 2017 11:06
Last Modified: 21 Apr 2017 11:06
URI: http://irep.iium.edu.my/id/eprint/56602

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