Experimental and Numerical Investigation of Local Scour for Suspended Square Caisson under Steady Flow

Abstract A numerical simulation is performed on a single stage centrifugal compressor using the commercially available CFD software, CFX-TASCflow. The steady flow is obtained by circumferentially averaging the exit fluxes of the impeller. Three runs are made at design condition and off-design conditions. The predicted performance is in agreement with experimental data. The flow details inside the stationary components are investigated, resulting in a flow model describing the volute/diffuser interaction at design and off-design conditions. The recirculation and twin vortex structure are found to explain the volute loss increase at lower and higher mass flows, respectively.

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Numerical investigation of local scour beneath a sagging subsea pipeline in steady currents

Coastal Engineering ◽

10.1016/j.coastaleng.2018.02.007 ◽

2018 ◽

Vol 136 ◽

pp. 106-118 ◽

Cited By ~ 4

Author(s):

Esmaeil Ajdehak ◽

Ming Zhao ◽

Liang Cheng ◽

Scott Draper

Keyword(s):

Numerical Investigation ◽

Local Scour ◽

Subsea Pipeline

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Numerical investigation of the influence of the small pipeline on local scour morphology around the piggyback pipeline

Ocean Engineering ◽

10.1016/j.oceaneng.2021.109973 ◽

2021 ◽

Vol 240 ◽

pp. 109973

Author(s):

Shaopeng Yang ◽

Yakun Guo ◽

Bing Shi ◽

Guoliang Yu ◽

Lipeng Yang ◽

...

Keyword(s):

Numerical Investigation ◽

Local Scour ◽

Scour Morphology

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Numerical investigation of local scour at two adjacent cylinders

Advances in Water Resources ◽

10.1016/j.advwatres.2014.04.018 ◽

2014 ◽

Vol 70 ◽

pp. 131-147 ◽

Cited By ~ 34

Author(s):

Hyung Suk Kim ◽

Mohamed Nabi ◽

Ichiro Kimura ◽

Yasuyuki Shimizu

Keyword(s):

Numerical Investigation ◽

Local Scour

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A numerical investigation into the steady flow past a rotating circular cylinder at low and intermediate Reynolds numbers

Journal of Computational Physics ◽

10.1016/0021-9991(90)90227-r ◽

1990 ◽

Vol 87 (1) ◽

pp. 91-107 ◽

Cited By ~ 84

Author(s):

D.B. Ingham ◽

T. Tang

Keyword(s):

Circular Cylinder ◽

Numerical Investigation ◽

Steady Flow ◽

Reynolds Numbers ◽

Rotating Circular Cylinder ◽

Flow Past

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LOCAL SCOUR CHARACTERISTICS OF GROINS AT TIDAL WATERWAYS AND THEIR SIMULATION

Coastal Engineering Proceedings ◽

10.9753/icce.v32.sediment.66 ◽

2011 ◽

Vol 1 (32) ◽

pp. 66

Author(s):

Xiping Dou ◽

Xinzhou Zhang ◽

Xiao-dong Zhao ◽

Xiangming Wang

Keyword(s):

Mathematical Model ◽

Sediment Transport ◽

Steady Flow ◽

Tidal Current ◽

River Regulation ◽

Local Scour ◽

Hydraulic Structures ◽

Scour Depth ◽

Channel Regulation ◽

Tidal Rivers

For the channel regulation in tidal rivers, groins are often used as typical hydraulic structures. Precisely predicting the local scour depth at the groin head is the key for the project of river regulation. The local scour of groins for tidal rivers is significantly different from that for the undirectional steady flow of general rivers. In the present paper, a three-dimendional (3D) mathematical model for turbulence and sediment transport are establishmented. The local scour near the groin under the actions of tidal current and steady flow are simulated by established 3D turbulence and sediment transport numerical model.The differences of the scour development and the scour pattern near the groin under these two actions are compared.

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