Comparative assessment of PANS and DES for simulation of flow past a circular cylinder

Dahai Luo; Chao Yan; Hongkang Liu; Rui Zhao

doi:10.1016/j.jweia.2014.08.014

Comparative assessment of PANS and DES for simulation of flow past a circular cylinder

Dahai Luo^*, Chao Yan^*, Hongkang Liu, Rui Zhao

^*Corresponding author for this work

School of Aerospace Engineering

Beihang University

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

63 Citations (Scopus)

Abstract

Flow past a circular cylinder at two subcritical Reynolds numbers (Re=3900 and Re=1.4×10⁵) is simulated by partially-averaged Navier–Stokes (PANS) method and detached eddy simulation (DES). The objective of current study is to evaluate the properties of PANS models in the simulation of unsteady turbulent flows. The model performance is assessed by a detailed comparison of PANS predictions to the corresponding experimental data and DES results. The computed pressure distribution, velocity profiles along with Reynolds stresses are presented in the comparison. The control parameter relevant to PANS models which determines the ratio of unresolved-to-total kinetic energy (f_k) is adopted as either a constant or a spatially varying function. As expected, fine-scale vortical structures are resolved at a low value of f_k. The numerical results from PANS show its comparable capabilities with DES for simulation of massively separated flows and its potential application in the prediction of industrial turbulent flows.

Original language	English
Pages (from-to)	65-77
Number of pages	13
Journal	Journal of Wind Engineering and Industrial Aerodynamics
Volume	134
DOIs	https://doi.org/10.1016/j.jweia.2014.08.014
Publication status	Published - Nov 2014

Keywords

Circular cylinder flow
Detached eddy simulation
Partially-averaged Navier–Stokes method
Reynolds stresses
Velocity profiles
Vortical structures

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10.1016/j.jweia.2014.08.014

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@article{a02aba39020047b3a9b0bcba5d508846,

title = "Comparative assessment of PANS and DES for simulation of flow past a circular cylinder",

abstract = "Flow past a circular cylinder at two subcritical Reynolds numbers (Re=3900 and Re=1.4×105) is simulated by partially-averaged Navier–Stokes (PANS) method and detached eddy simulation (DES). The objective of current study is to evaluate the properties of PANS models in the simulation of unsteady turbulent flows. The model performance is assessed by a detailed comparison of PANS predictions to the corresponding experimental data and DES results. The computed pressure distribution, velocity profiles along with Reynolds stresses are presented in the comparison. The control parameter relevant to PANS models which determines the ratio of unresolved-to-total kinetic energy (fk) is adopted as either a constant or a spatially varying function. As expected, fine-scale vortical structures are resolved at a low value of fk. The numerical results from PANS show its comparable capabilities with DES for simulation of massively separated flows and its potential application in the prediction of industrial turbulent flows.",

keywords = "Circular cylinder flow, Detached eddy simulation, Partially-averaged Navier–Stokes method, Reynolds stresses, Velocity profiles, Vortical structures",

author = "Dahai Luo and Chao Yan and Hongkang Liu and Rui Zhao",

note = "Publisher Copyright: {\textcopyright} 2014 Elsevier Ltd",

year = "2014",

month = nov,

doi = "10.1016/j.jweia.2014.08.014",

language = "English",

volume = "134",

pages = "65--77",

journal = "Journal of Wind Engineering and Industrial Aerodynamics",

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T1 - Comparative assessment of PANS and DES for simulation of flow past a circular cylinder

AU - Luo, Dahai

AU - Yan, Chao

AU - Liu, Hongkang

AU - Zhao, Rui

PY - 2014/11

Y1 - 2014/11

N2 - Flow past a circular cylinder at two subcritical Reynolds numbers (Re=3900 and Re=1.4×105) is simulated by partially-averaged Navier–Stokes (PANS) method and detached eddy simulation (DES). The objective of current study is to evaluate the properties of PANS models in the simulation of unsteady turbulent flows. The model performance is assessed by a detailed comparison of PANS predictions to the corresponding experimental data and DES results. The computed pressure distribution, velocity profiles along with Reynolds stresses are presented in the comparison. The control parameter relevant to PANS models which determines the ratio of unresolved-to-total kinetic energy (fk) is adopted as either a constant or a spatially varying function. As expected, fine-scale vortical structures are resolved at a low value of fk. The numerical results from PANS show its comparable capabilities with DES for simulation of massively separated flows and its potential application in the prediction of industrial turbulent flows.

AB - Flow past a circular cylinder at two subcritical Reynolds numbers (Re=3900 and Re=1.4×105) is simulated by partially-averaged Navier–Stokes (PANS) method and detached eddy simulation (DES). The objective of current study is to evaluate the properties of PANS models in the simulation of unsteady turbulent flows. The model performance is assessed by a detailed comparison of PANS predictions to the corresponding experimental data and DES results. The computed pressure distribution, velocity profiles along with Reynolds stresses are presented in the comparison. The control parameter relevant to PANS models which determines the ratio of unresolved-to-total kinetic energy (fk) is adopted as either a constant or a spatially varying function. As expected, fine-scale vortical structures are resolved at a low value of fk. The numerical results from PANS show its comparable capabilities with DES for simulation of massively separated flows and its potential application in the prediction of industrial turbulent flows.

KW - Circular cylinder flow

KW - Detached eddy simulation

KW - Partially-averaged Navier–Stokes method

KW - Reynolds stresses

KW - Velocity profiles

KW - Vortical structures

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U2 - 10.1016/j.jweia.2014.08.014

DO - 10.1016/j.jweia.2014.08.014

M3 - Article

AN - SCOPUS:84945126113

SN - 0167-6105

VL - 134

SP - 65

EP - 77

JO - Journal of Wind Engineering and Industrial Aerodynamics

JF - Journal of Wind Engineering and Industrial Aerodynamics

ER -

Comparative assessment of PANS and DES for simulation of flow past a circular cylinder

Abstract

Keywords

UN SDGs

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