Computation of flow in a 3D diffuser using a two-velocity field hybrid RANS/LES

J. C. Uribe; A. Revell; C. Moulinec

doi:10.1007/978-3-642-14139-3-47

Computation of flow in a 3D diffuser using a two-velocity field hybrid RANS/LES

J. C. Uribe, A. Revell, C. Moulinec

Research output: Contribution to conference › Paper › peer-review

Abstract

The flow inside a three-dimensional diffuser is computed with a two-velocity hybrid RANS/LES model that ensues the separation of dissipative effects of the mean and fluctuating fields to be treated individually; by extracting a running average velocity field from instantaneous quantities. The averaged field is then used to calculate the contribution of the mean shear which is larger than that from the fluctuating one over the near wall region. Results with the hybrid model are presented and compared to those from a DES on the same grid. RANS results obtained with models upon which both these approaches are based are also reported. The RANS results are unable to capture essential characteristics of the flow whereas the hybrid method produces results which generally agree well with the experiment. © 2010 Springer-Verlag Berlin Heidelberg.

Original language	English
Pages	385-391
Number of pages	6
DOIs	https://doi.org/10.1007/978-3-642-14139-3-47
Publication status	Published - 2010

Access to Document

10.1007/978-3-642-14139-3-47

Cite this

@conference{814245e0848541778efac7a43db4ca6c,

title = "Computation of flow in a 3D diffuser using a two-velocity field hybrid RANS/LES",

abstract = "The flow inside a three-dimensional diffuser is computed with a two-velocity hybrid RANS/LES model that ensues the separation of dissipative effects of the mean and fluctuating fields to be treated individually; by extracting a running average velocity field from instantaneous quantities. The averaged field is then used to calculate the contribution of the mean shear which is larger than that from the fluctuating one over the near wall region. Results with the hybrid model are presented and compared to those from a DES on the same grid. RANS results obtained with models upon which both these approaches are based are also reported. The RANS results are unable to capture essential characteristics of the flow whereas the hybrid method produces results which generally agree well with the experiment. {\textcopyright} 2010 Springer-Verlag Berlin Heidelberg.",

author = "Uribe, \{J. C.\} and A. Revell and C. Moulinec",

year = "2010",

doi = "10.1007/978-3-642-14139-3-47",

language = "English",

pages = "385--391",

}

TY - CONF

T1 - Computation of flow in a 3D diffuser using a two-velocity field hybrid RANS/LES

AU - Uribe, J. C.

AU - Revell, A.

AU - Moulinec, C.

PY - 2010

Y1 - 2010

N2 - The flow inside a three-dimensional diffuser is computed with a two-velocity hybrid RANS/LES model that ensues the separation of dissipative effects of the mean and fluctuating fields to be treated individually; by extracting a running average velocity field from instantaneous quantities. The averaged field is then used to calculate the contribution of the mean shear which is larger than that from the fluctuating one over the near wall region. Results with the hybrid model are presented and compared to those from a DES on the same grid. RANS results obtained with models upon which both these approaches are based are also reported. The RANS results are unable to capture essential characteristics of the flow whereas the hybrid method produces results which generally agree well with the experiment. © 2010 Springer-Verlag Berlin Heidelberg.

AB - The flow inside a three-dimensional diffuser is computed with a two-velocity hybrid RANS/LES model that ensues the separation of dissipative effects of the mean and fluctuating fields to be treated individually; by extracting a running average velocity field from instantaneous quantities. The averaged field is then used to calculate the contribution of the mean shear which is larger than that from the fluctuating one over the near wall region. Results with the hybrid model are presented and compared to those from a DES on the same grid. RANS results obtained with models upon which both these approaches are based are also reported. The RANS results are unable to capture essential characteristics of the flow whereas the hybrid method produces results which generally agree well with the experiment. © 2010 Springer-Verlag Berlin Heidelberg.

UR - https://www.scopus.com/pages/publications/77957729935

U2 - 10.1007/978-3-642-14139-3-47

DO - 10.1007/978-3-642-14139-3-47

M3 - Paper

SP - 385

EP - 391

ER -

Computation of flow in a 3D diffuser using a two-velocity field hybrid RANS/LES

Abstract

Access to Document

Other files and links

Fingerprint

Cite this