A comparative study of manhole hydraulics using stereoscopic PIV and different RANS models

Md Nazmul Azim Beg; Rita F. Carvalho; Simon Tait; Wernher Brevis; Matteo Rubinato; Alma Schellart; Jorge Leandro

doi:10.2166/wst.2018.089

A comparative study of manhole hydraulics using stereoscopic PIV and different RANS models

Md Nazmul Azim Beg, Rita F. Carvalho, Simon Tait, Wernher Brevis, Matteo Rubinato, Alma Schellart, Jorge Leandro

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

21 Citations (Scopus)

Abstract

Flows in manholes are complex and may include swirling and recirculation flow with significant turbulence and vorticity. However, how these complex 3D flow patterns could generate different energy losses and so affect flow quantity in the wider sewer network is unknown. In this work, 2D3C stereo Particle Image Velocimetry measurements are made in a surcharged scaled circular manhole. A computational fluid dynamics (CFD) model in OpenFOAM® with four different Reynolds Averaged Navier Stokes (RANS) turbulence model is constructed using a volume of fluid model, to represent flows in this manhole. Velocity profiles and pressure distributions from the models are compared with the experimental data in view of finding the best modelling approach. It was found among four different RANS models that the re-normalisation group (RNG) k-ε and k-ω shear stress transport (SST) gave a better approximation for velocity and pressure.

Original language	English
Pages (from-to)	87-98
Number of pages	12
Journal	Water Science and Technology
Volume	2017
Issue number	1
Early online date	28 Feb 2018
DOIs	https://doi.org/10.2166/wst.2018.089
Publication status	Published - 26 Apr 2018
Externally published	Yes

Keywords

Manhole
OpenFOAM(r)
RANS model
Stereoscopic Particle Image Velocimetry (PIV)
Volume Of Fluid (VOF)

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10.2166/wst.2018.089

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title = "A comparative study of manhole hydraulics using stereoscopic PIV and different RANS models",

abstract = "Flows in manholes are complex and may include swirling and recirculation flow with significant turbulence and vorticity. However, how these complex 3D flow patterns could generate different energy losses and so affect flow quantity in the wider sewer network is unknown. In this work, 2D3C stereo Particle Image Velocimetry measurements are made in a surcharged scaled circular manhole. A computational fluid dynamics (CFD) model in OpenFOAM{\textregistered} with four different Reynolds Averaged Navier Stokes (RANS) turbulence model is constructed using a volume of fluid model, to represent flows in this manhole. Velocity profiles and pressure distributions from the models are compared with the experimental data in view of finding the best modelling approach. It was found among four different RANS models that the re-normalisation group (RNG) k-ε and k-ω shear stress transport (SST) gave a better approximation for velocity and pressure.",

keywords = "Manhole, OpenFOAM(r), RANS model, Stereoscopic Particle Image Velocimetry (PIV), Volume Of Fluid (VOF)",

author = "Beg, {Md Nazmul Azim} and Carvalho, {Rita F.} and Simon Tait and Wernher Brevis and Matteo Rubinato and Alma Schellart and Jorge Leandro",

year = "2018",

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doi = "10.2166/wst.2018.089",

language = "English",

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AU - Beg, Md Nazmul Azim

AU - Carvalho, Rita F.

AU - Tait, Simon

AU - Brevis, Wernher

AU - Rubinato, Matteo

AU - Schellart, Alma

AU - Leandro, Jorge

PY - 2018/4/26

Y1 - 2018/4/26

N2 - Flows in manholes are complex and may include swirling and recirculation flow with significant turbulence and vorticity. However, how these complex 3D flow patterns could generate different energy losses and so affect flow quantity in the wider sewer network is unknown. In this work, 2D3C stereo Particle Image Velocimetry measurements are made in a surcharged scaled circular manhole. A computational fluid dynamics (CFD) model in OpenFOAM® with four different Reynolds Averaged Navier Stokes (RANS) turbulence model is constructed using a volume of fluid model, to represent flows in this manhole. Velocity profiles and pressure distributions from the models are compared with the experimental data in view of finding the best modelling approach. It was found among four different RANS models that the re-normalisation group (RNG) k-ε and k-ω shear stress transport (SST) gave a better approximation for velocity and pressure.

AB - Flows in manholes are complex and may include swirling and recirculation flow with significant turbulence and vorticity. However, how these complex 3D flow patterns could generate different energy losses and so affect flow quantity in the wider sewer network is unknown. In this work, 2D3C stereo Particle Image Velocimetry measurements are made in a surcharged scaled circular manhole. A computational fluid dynamics (CFD) model in OpenFOAM® with four different Reynolds Averaged Navier Stokes (RANS) turbulence model is constructed using a volume of fluid model, to represent flows in this manhole. Velocity profiles and pressure distributions from the models are compared with the experimental data in view of finding the best modelling approach. It was found among four different RANS models that the re-normalisation group (RNG) k-ε and k-ω shear stress transport (SST) gave a better approximation for velocity and pressure.

KW - Manhole

KW - OpenFOAM(r)

KW - RANS model

KW - Stereoscopic Particle Image Velocimetry (PIV)

KW - Volume Of Fluid (VOF)

UR - http://www.mendeley.com/research/comparative-study-manhole-hydraulics-using-stereoscopic-piv-different-rans-models

U2 - 10.2166/wst.2018.089

DO - 10.2166/wst.2018.089

M3 - Article

SN - 0273-1223

VL - 2017

SP - 87

EP - 98

JO - Water Science and Technology

JF - Water Science and Technology

IS - 1

ER -

A comparative study of manhole hydraulics using stereoscopic PIV and different RANS models

Abstract

Keywords

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