Incompressible SPH simulation of open channel flow over smooth bed

The Smoothed Particle Hydrodynamics (SPH) modelling techniques are used in a variety of coastal hydrodynamic applications, but only limited works have been documented in the open channel flows. In this paper, we use the incompressible SPH model combined with an improved inflow boundary scheme to inv...

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Main Authors: Tan, Soon Keat, Cheng, Nian-Sheng, Xie, Yin, Shao, Songdong
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2015
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Online Access:https://hdl.handle.net/10356/106195
http://hdl.handle.net/10220/37798
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1061952020-09-26T22:02:25Z Incompressible SPH simulation of open channel flow over smooth bed Tan, Soon Keat Cheng, Nian-Sheng Xie, Yin Shao, Songdong School of Civil and Environmental Engineering Nanyang Environment and Water Research Institute DRNTU::Engineering::Civil engineering::Water resources The Smoothed Particle Hydrodynamics (SPH) modelling techniques are used in a variety of coastal hydrodynamic applications, but only limited works have been documented in the open channel flows. In this paper, we use the incompressible SPH model combined with an improved inflow boundary scheme to investigate the open channel flows in a laboratory scale. The inflow and outflow boundary conditions are treated by generating and removing the fluid particles at the channel end. The proposed ISPH model has been applied to the open channel laminar and turbulent flows of different flow depths and the computational results have been verified against the analytical solutions. Model convergence has been investigated through the numerical tests using different particle spacings and time steps. The artificial boundary drag force of numerical nature has been found under certain flow conditions. As further application of the model, two additional tests are also carried out, involving alternative solid boundary treatment and more complex channel topography. The present study could provide useful information on further exploitation of the SPH modelling technique in river hydrodynamics. Accepted version 2015-07-14T01:38:54Z 2019-12-06T22:06:09Z 2015-07-14T01:38:54Z 2019-12-06T22:06:09Z 2015 2015 Journal Article Tan, S. K., Cheng, N. S., Xie, Y., & Shao, S. (2015). Incompressible SPH simulation of open channel flow over smooth bed. Journal of Hydro-environment Research, in press. 1570-6443 https://hdl.handle.net/10356/106195 http://hdl.handle.net/10220/37798 10.1016/j.jher.2014.12.006 en Journal of hydro-environment research © 2015 International Association for Hydro-environment Engineering and Research, Asia Pacific Division. This is the author created version of a work that has been peer reviewed and accepted for publication in Journal of Hydro-environment Research, published by Elsevier on behalf of International Association for Hydro-environment Engineering and Research, Asia Pacific Division. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document.  The published version is available at: [http://dx.doi.org/10.1016/j.jher.2014.12.006]. 33 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Civil engineering::Water resources
spellingShingle DRNTU::Engineering::Civil engineering::Water resources
Tan, Soon Keat
Cheng, Nian-Sheng
Xie, Yin
Shao, Songdong
Incompressible SPH simulation of open channel flow over smooth bed
description The Smoothed Particle Hydrodynamics (SPH) modelling techniques are used in a variety of coastal hydrodynamic applications, but only limited works have been documented in the open channel flows. In this paper, we use the incompressible SPH model combined with an improved inflow boundary scheme to investigate the open channel flows in a laboratory scale. The inflow and outflow boundary conditions are treated by generating and removing the fluid particles at the channel end. The proposed ISPH model has been applied to the open channel laminar and turbulent flows of different flow depths and the computational results have been verified against the analytical solutions. Model convergence has been investigated through the numerical tests using different particle spacings and time steps. The artificial boundary drag force of numerical nature has been found under certain flow conditions. As further application of the model, two additional tests are also carried out, involving alternative solid boundary treatment and more complex channel topography. The present study could provide useful information on further exploitation of the SPH modelling technique in river hydrodynamics.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Tan, Soon Keat
Cheng, Nian-Sheng
Xie, Yin
Shao, Songdong
format Article
author Tan, Soon Keat
Cheng, Nian-Sheng
Xie, Yin
Shao, Songdong
author_sort Tan, Soon Keat
title Incompressible SPH simulation of open channel flow over smooth bed
title_short Incompressible SPH simulation of open channel flow over smooth bed
title_full Incompressible SPH simulation of open channel flow over smooth bed
title_fullStr Incompressible SPH simulation of open channel flow over smooth bed
title_full_unstemmed Incompressible SPH simulation of open channel flow over smooth bed
title_sort incompressible sph simulation of open channel flow over smooth bed
publishDate 2015
url https://hdl.handle.net/10356/106195
http://hdl.handle.net/10220/37798
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