Simple improvements in the SST-DES formulation for mild aerofoil trailing-edge separation

Xiangyu Wang; Dong Li

doi:10.1007/978-3-319-15141-0_17

Simple improvements in the SST-DES formulation for mild aerofoil trailing-edge separation

Xiangyu Wang
, Dong Li

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

We present an improved Detached Eddy Simulation (DES) based on the SST turbulence model, WAD SST-DES, for accelerating the Large Eddy Simulation (LES) development in mixing layers. Similar to WAD-DES based on the SA turbulence model proposed byWang and Qin, the formulation of Yoshizawa’s k-equationlike subgrid model in LES zones in the original SST-DES is rewritten as a standard one to end the previous turbulence transfer in the interface between the RANS and LES regions, and the numerical results for flow around A-aerofoil show that these improvements efficiently weaken the influence of the grey area while delaying the RANS at the boundary, in a manner similar to DDES. In addition, we discuss the influence of several coefficients in the improved SST-DES; these coefficients may play a very important role in the final simulation results.

Original language	English
Pages (from-to)	215-225
Number of pages	11
Journal	Notes on Numerical Fluid Mechanics and Multidisciplinary Design
Volume	130
DOIs	https://doi.org/10.1007/978-3-319-15141-0_17
State	Published - 2015

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title = "Simple improvements in the SST-DES formulation for mild aerofoil trailing-edge separation",

abstract = "We present an improved Detached Eddy Simulation (DES) based on the SST turbulence model, WAD SST-DES, for accelerating the Large Eddy Simulation (LES) development in mixing layers. Similar to WAD-DES based on the SA turbulence model proposed byWang and Qin, the formulation of Yoshizawa{\textquoteright}s k-equationlike subgrid model in LES zones in the original SST-DES is rewritten as a standard one to end the previous turbulence transfer in the interface between the RANS and LES regions, and the numerical results for flow around A-aerofoil show that these improvements efficiently weaken the influence of the grey area while delaying the RANS at the boundary, in a manner similar to DDES. In addition, we discuss the influence of several coefficients in the improved SST-DES; these coefficients may play a very important role in the final simulation results.",

author = "Xiangyu Wang and Dong Li",

note = "Publisher Copyright: {\textcopyright} Springer International Publishing Switzerland 2015.",

year = "2015",

doi = "10.1007/978-3-319-15141-0\_17",

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T1 - Simple improvements in the SST-DES formulation for mild aerofoil trailing-edge separation

AU - Wang, Xiangyu

AU - Li, Dong

N1 - Publisher Copyright: © Springer International Publishing Switzerland 2015.

PY - 2015

Y1 - 2015

N2 - We present an improved Detached Eddy Simulation (DES) based on the SST turbulence model, WAD SST-DES, for accelerating the Large Eddy Simulation (LES) development in mixing layers. Similar to WAD-DES based on the SA turbulence model proposed byWang and Qin, the formulation of Yoshizawa’s k-equationlike subgrid model in LES zones in the original SST-DES is rewritten as a standard one to end the previous turbulence transfer in the interface between the RANS and LES regions, and the numerical results for flow around A-aerofoil show that these improvements efficiently weaken the influence of the grey area while delaying the RANS at the boundary, in a manner similar to DDES. In addition, we discuss the influence of several coefficients in the improved SST-DES; these coefficients may play a very important role in the final simulation results.

AB - We present an improved Detached Eddy Simulation (DES) based on the SST turbulence model, WAD SST-DES, for accelerating the Large Eddy Simulation (LES) development in mixing layers. Similar to WAD-DES based on the SA turbulence model proposed byWang and Qin, the formulation of Yoshizawa’s k-equationlike subgrid model in LES zones in the original SST-DES is rewritten as a standard one to end the previous turbulence transfer in the interface between the RANS and LES regions, and the numerical results for flow around A-aerofoil show that these improvements efficiently weaken the influence of the grey area while delaying the RANS at the boundary, in a manner similar to DDES. In addition, we discuss the influence of several coefficients in the improved SST-DES; these coefficients may play a very important role in the final simulation results.

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JO - Notes on Numerical Fluid Mechanics and Multidisciplinary Design

JF - Notes on Numerical Fluid Mechanics and Multidisciplinary Design

ER -

Simple improvements in the SST-DES formulation for mild aerofoil trailing-edge separation

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