Reliable and accurate prediction of three-dimensional separation in asymmetric diffusers using large-eddy simulation

Hayder Schneider; Dominic Von Terzi; Hans Jörg Bauer; Wolfgang Rodi

doi:10.1115/1.4001009

Reliable and accurate prediction of three-dimensional separation in asymmetric diffusers using large-eddy simulation

Hayder Schneider^*, Dominic Von Terzi, Hans Jörg Bauer, Wolfgang Rodi

^*Corresponding author for this work

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

20 Citations (Scopus)

Abstract

Large-eddy simulations (LES) and Reynolds-averaged Navier-Stokes (RANS) calculations of the flow in two asymmetric three-dimensional diffusers were performed. The setup was chosen to match an existing experiment with separation. Both diffusers possess the same expansion ratio but differ in performance. The aim of the present study is to find the least expensive method to reliably and with reasonable accuracy account for the impact of the change in geometry. RANS calculations failed to predict both the extent and location of the separation. In contrast, LES with wall-functions delivered results within the accuracy of the experimental data.

Original language	English
Pages (from-to)	311011-311017
Number of pages	7
Journal	Journal of Fluids Engineering, Transactions of the ASME
Volume	132
Issue number	3
DOIs	https://doi.org/10.1115/1.4001009
Publication status	Published - 2010
Externally published	Yes

Access to Document

10.1115/1.4001009

Cite this

@article{19ed2366e6e74f59a7e746bec0c9009f,

title = "Reliable and accurate prediction of three-dimensional separation in asymmetric diffusers using large-eddy simulation",

abstract = "Large-eddy simulations (LES) and Reynolds-averaged Navier-Stokes (RANS) calculations of the flow in two asymmetric three-dimensional diffusers were performed. The setup was chosen to match an existing experiment with separation. Both diffusers possess the same expansion ratio but differ in performance. The aim of the present study is to find the least expensive method to reliably and with reasonable accuracy account for the impact of the change in geometry. RANS calculations failed to predict both the extent and location of the separation. In contrast, LES with wall-functions delivered results within the accuracy of the experimental data.",

author = "Hayder Schneider and {Von Terzi}, Dominic and Bauer, {Hans J{\"o}rg} and Wolfgang Rodi",

year = "2010",

doi = "10.1115/1.4001009",

language = "English",

volume = "132",

pages = "311011--311017",

journal = "Journal of Fluids Engineering, Transactions of the ASME",

issn = "0098-2202",

publisher = "ASME",

number = "3",

}

TY - JOUR

T1 - Reliable and accurate prediction of three-dimensional separation in asymmetric diffusers using large-eddy simulation

AU - Schneider, Hayder

AU - Von Terzi, Dominic

AU - Bauer, Hans Jörg

AU - Rodi, Wolfgang

PY - 2010

Y1 - 2010

N2 - Large-eddy simulations (LES) and Reynolds-averaged Navier-Stokes (RANS) calculations of the flow in two asymmetric three-dimensional diffusers were performed. The setup was chosen to match an existing experiment with separation. Both diffusers possess the same expansion ratio but differ in performance. The aim of the present study is to find the least expensive method to reliably and with reasonable accuracy account for the impact of the change in geometry. RANS calculations failed to predict both the extent and location of the separation. In contrast, LES with wall-functions delivered results within the accuracy of the experimental data.

AB - Large-eddy simulations (LES) and Reynolds-averaged Navier-Stokes (RANS) calculations of the flow in two asymmetric three-dimensional diffusers were performed. The setup was chosen to match an existing experiment with separation. Both diffusers possess the same expansion ratio but differ in performance. The aim of the present study is to find the least expensive method to reliably and with reasonable accuracy account for the impact of the change in geometry. RANS calculations failed to predict both the extent and location of the separation. In contrast, LES with wall-functions delivered results within the accuracy of the experimental data.

UR - http://www.scopus.com/inward/record.url?scp=77955289642&partnerID=8YFLogxK

U2 - 10.1115/1.4001009

DO - 10.1115/1.4001009

M3 - Article

AN - SCOPUS:77955289642

SN - 0098-2202

VL - 132

SP - 311011

EP - 311017

JO - Journal of Fluids Engineering, Transactions of the ASME

JF - Journal of Fluids Engineering, Transactions of the ASME

IS - 3

ER -

Reliable and accurate prediction of three-dimensional separation in asymmetric diffusers using large-eddy simulation

Abstract

Access to Document

Other files and links

Fingerprint

Cite this