Experiment and simulation of turbulent flow in local scour around a spur dyke
The turbulent flow in the local scour hole around a single non-submerged spur dyke is investigated with both experimental and numerical methods. The experiments are conducted under clear-water scour regime with an impermeable spur dyke. The scour geometry and flow velocities are measured in details...
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Published in: | International journal of sediment research Vol. 24; no. 1; pp. 33 - 45 |
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Language: | English |
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Elsevier B.V
01-03-2009
Disaster Prevention Research Institute,Kyoto University,Japan |
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Abstract | The turbulent flow in the local scour hole around a single non-submerged spur dyke is investigated with both experimental and numerical methods. The experiments are conducted under clear-water scour regime with an impermeable spur dyke. The scour geometry and flow velocities are measured in details with a high-resolution laser displacement meter, electro-magnetic velocimetries and PIV (Particle image velocimetry). A 3D non-linear k-ε model is developed to simulate the complex local flow field around the scour area. The numerical model is formulated using FVM (Finite volume method) on a collocated unstructured mesh, capable of resolving complex geometries and boundaries. It is found that the simulation results are reasonably consistent with those of the experimental measurements. Based on the study results, the nature of the flow structure around a spur dyke with local scour hole is analyzed. |
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AbstractList | P3; The turbulent flow in the local scour hole around a single non-submerged spur dyke is investigated with both experimental and numerical methods.The experiments are conducted under clear-water scour regime with an impermeable spur dyke.The scour geometry and flow velocities are measured in details with a high-resolution laser displacement meter,electro-magnetic velocimetries and PIV (Particle image velocimetry).A 3D non-linear κ-ε model is developed to simulate the complex local flow field around the scour area.The numerical model is formulated using FVM (Finite volume method) on a collocated unstructured mesh,capable of resolving complex geometries and boundaries.It is found that the simulation results are reasonably consistent with those of the experimental measurements.Based on the study results,the nature of the flow structrue around a spur dyke with local scour hole is analyzed. The turbulent flow in the local scour hole around a single non-submerged spur dyke is investigated with both experimental and numerical methods. The experiments are conducted under clear-water scour regime with an impermeable spur dyke. The scour geometry and flow velocities are measured in details with a high- resolution laser displacement meter, electro-magnetic velocimetries and PIV (Particle image velocimetry). A 3D non-linear k-[var epsilon] model is developed to simulate the complex local flow field around the scour area. The numerical model is formulated using FVM (Finite volume method) on a collocated unstructured mesh, capable of resolving complex geometries and boundaries. It is found that the simulation results are reasonably consistent with those of the experimental measurements. Based on the study results, the nature of the flow structure around a spur dyke with local scour hole is analyzed. The turbulent flow in the local scour hole around a single non-submerged spur dyke is investigated with both experimental and numerical methods. The experiments are conducted under clear-water scour regime with an impermeable spur dyke. The scour geometry and flow velocities are measured in details with a high-resolution laser displacement meter, electro-magnetic velocimetries and PIV (Particle image velocimetry). A 3D non-linear k-ε model is developed to simulate the complex local flow field around the scour area. The numerical model is formulated using FVM (Finite volume method) on a collocated unstructured mesh, capable of resolving complex geometries and boundaries. It is found that the simulation results are reasonably consistent with those of the experimental measurements. Based on the study results, the nature of the flow structure around a spur dyke with local scour hole is analyzed. The turbulent flow in the local scour hole around a single non-submerged spur dyke is investigated with both experimental and numerical methods. The experiments are conducted under clear-water scour regime with an impermeable spur dyke. The scour geometry and flow velocities are measured in details with a high-resolution laser displacement meter, electro-magnetic velocimetries and PIV (Particle image velocimetry). A 3D non-linear k-ɛ model is developed to simulate the complex local flow field around the scour area. The numerical model is formulated using FVM (Finite volume method) on a collocated unstructured mesh, capable of resolving complex geometries and boundaries. It is found that the simulation results are reasonably consistent with those of the experimental measurements. Based on the study results, the nature of the flow structure around a spur dyke with local scour hole is analyzed. |
Author | Hao ZHANG Hajime NAKAGAWA Kenji KAWAIKE Yasuyuld BABA |
AuthorAffiliation | Dr. of Eng., Assis. Prof., Disaster Prevention Research Institute, Kyoto University, Japan Dr. of Eng., Prof., Disaster Prevention Research Institute, Kyoto University, Japan |
AuthorAffiliation_xml | – name: Disaster Prevention Research Institute,Kyoto University,Japan |
Author_xml | – sequence: 1 givenname: Hao surname: ZHANG fullname: ZHANG, Hao email: zhang@uh31.dpri.kyoto-u.ac.jp organization: Dr. of Eng., Assis. Prof., Disaster Prevention Research Institute, Kyoto University, Japan – sequence: 2 givenname: Hajime surname: NAKAGAWA fullname: NAKAGAWA, Hajime email: nakagawa@mbox.kudpc.kyoto-u.ac.jp organization: Dr. of Eng., Prof., Disaster Prevention Research Institute, Kyoto University, Japan – sequence: 3 givenname: Kenji surname: KAWAIKE fullname: KAWAIKE, Kenji email: kawaike@mbox.kudpe.kyoto-u.ac.jp organization: Dr. of Eng., Assis. Prof., Disaster Prevention Research Institute, Kyoto University, Japan – sequence: 4 givenname: Yasuyuki surname: BABA fullname: BABA, Yasuyuki email: baba@ub31.dpri.kyoto-u.ac.jp organization: Dr. of Eng., Assis. Prof., Disaster Prevention Research Institute, Kyoto University, Japan |
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Copyright | 2009 International Research and Training Centre on Erosion and Sedimentation and the World Association for Sedimentation and Erosion Research Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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Keywords | Unstructured mesh Spur dyke Local scour Non-linear k-ɛ model 3D flow Non-linear κ-ε model |
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Snippet | The turbulent flow in the local scour hole around a single non-submerged spur dyke is investigated with both experimental and numerical methods. The... P3; The turbulent flow in the local scour hole around a single non-submerged spur dyke is investigated with both experimental and numerical methods.The... |
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SubjectTerms | 3D flow Local scour Non-linear k-ɛ model Spur dyke Unstructured mesh 几何形状 实验条件 局部冲刷 有限体积法 湍流流动 粒子图像测速 |
Title | Experiment and simulation of turbulent flow in local scour around a spur dyke |
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