MUSTLab
Multiphase modelling of sediment transport
Sediment transport, the movement of sediment particles due to gravity and/or fluid flow, is important in the fields of sedimentary geology, geomorphology, coastal engineering, ocean engineering, and hydraulic engineering. Sediment material can behavior like a gas, liquid, and solid in different cases, so sediment transport modelling is a challenging issue. In the past 10 years, we developed the first multi-dimensional, multi-purpose sediment transport model and applied it to solve various problems such as scour, turbidity current, underwater landslide, and wave induced by underwater landslide. However, complex interactions between fluid eddies and particles and between particles are not well understood and they are not well considered in my model. In the next 10 years, we will focus on studying those complex interactions and developing a next-generation sediment transport model.
Method
Applications
Yu, M.L. and Lee, C.H., 2019. Three-phase-flow modeling of underwater landslides on an inclined plane and consequently generated waves. Adv. Water. Resour. 133, 103421.
Underwater landslide
Yu, M.L., Lee, C.H., Huang, Z.H., 2018. Impulsive waves generated by the collapse of a submerged granular column: a three-phase flow simulation with an emphasis on the effects of initial packing condition. J. Earthq. Tsunami 12, 1–18. (Special Issue: 2017 South China Sea Tsunami Workshop)
Collapse of granular column
Lee, C.H., Low, Y.M, and Chiew, Y.M., 2016. MultiÂdimensional rheologyÂbased twoÂphase model for sediment transport and applications to sheet flow and pipeline scour. Phys. Fluids 28, 053305.
Scour under a pipeline
Lee, C.H., 2019. Multi-phase flow modeling of submarine landslides: Transformation from hyperconcentrated flows into turbidity currents. Adv. Water Resour. 131, 103383.
Transformation from hyperconcentrated flows into turbidity currents
Research Projects
To see a world from a grain of sand: Development of new generation multi-phase sediment transport model and applications (5/5) (Columbus Program)
PI: Cheng-Hsien Lee
Sponsor: MOST [112-2636-E-110 -005]
Amount: NT$ 6,790,000
Duration: 02/2023-01/2024
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To see a world from a grain of sand: Development of new generation multi-phase sediment transport model and applications (5/5) (Columbus Program)
PI: Cheng-Hsien Lee
Sponsor: MOST [112-2636-E-110 -005]
Amount: NT$ 6,790,000
Duration: 02/2023-01/2024
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To see a world from a grain of sand: Development of new generation multi-phase sediment transport model and applications (4/5) (Columbus Program)
PI: Cheng-Hsien Lee
Sponsor: MOST [111-2636-E-110-006-]
Amount: NT$ 7,193,000
Duration: 02/2022-01/2023
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To see a world from a grain of sand: Development of new generation multi-phase sediment transport model and applications (3/5) (Columbus Program)
PI: Cheng-Hsien Lee
Sponsor: MOST [110-2636-E-110-010-]
Amount: NT$ 10,000,000
Duration: 02/2021-01/2022
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To see a world from a grain of sand: Development of new generation multi-phase sediment transport model and applications (2/5) (Columbus Program)
PI: Cheng-Hsien Lee
Sponsor: MOST [109-2636-E-110-008-]
Amount: NT$ 10,000,000
Duration: 02/2020-01/2021
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To see a world from a grain of sand: Development of new generation multi-phase sediment transport model and applications (1/5) (Columbus Program)
PI: Cheng-Hsien Lee
Sponsor: MOST [108-2636-E-032 -001-]
Amount: NT$ 10,000,000
Duration: 02/2019-01/2020
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Underwater landslides and their generated waves
PI: Cheng-Hsien Lee
Sponsor: MOST [107-2221-E-032-018-MY3]
Amount: NT$ 2,368,000
Duration: 08/2018-07/2021
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Numerical and experimental study of underwater landslides
PI: Cheng-Hsien Lee
Sponsor: MOST [106-2221-E-032-029-]
Amount: NT$803,000
Duration: 08/2017-07/2018
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Experimental study of underwater landslide and development of two-phase flow model
PI: Cheng-Hsien Lee
Sponsor: MOST [105-2221-E-032-030-]
Amount: NT$ 875,000
Duration: 08/2016-07/2017
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Development of multi-dimensional numerical scour model
PI: Cheng-Hsien Lee
Sponsor: MOST [105-2221-E-032-030-]
Amount: NT$ 628,000
Duration: 01/2016-10/2016