Towards pressure gradient sensitive transitional k-kl-omega model: The natural transition for low-re airfoils
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 mi...
| Main Authors: | , , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2015
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/56602/ http://irep.iium.edu.my/56602/ http://irep.iium.edu.my/56602/7/56602.pdf |
| Summary: | 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 |
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