Water waves generated by deformable granular landslides in enclosed water bodies are very *** complicated phenomena occurred in this highly unsteady process are difficult to model because three interacting phases:air,...
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Water waves generated by deformable granular landslides in enclosed water bodies are very *** complicated phenomena occurred in this highly unsteady process are difficult to model because three interacting phases:air,water and deformable granular are involved. Solutions currently available are mostly based on the shallow water ***, neglecting vertical accelerations is inaccurate in the generation zone where depth change rapidly, and on the shore,where run-up and wave-breaking *** this work,we modeling the generation of water waves owing to deformable granular landslides by solving the Navier-Stokes equations coupling with the Volume of Fluid(VOF) method tracking of the interfaces between the phases and describing the rheology of the granular landslides using a non-Newtonian fluid *** comparison between the numerical results and experimental data reported in the literature confirms the accuracy of the proposed method.
Drag coefficient of a bluff body is a crucial parameter for studying fluid-structure interaction *** characterizes the magnitude of drag force on the *** larger the drag coefficient is,the larger distance the structur...
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Drag coefficient of a bluff body is a crucial parameter for studying fluid-structure interaction *** characterizes the magnitude of drag force on the *** larger the drag coefficient is,the larger distance the structure is away from its initial *** it is very important in designing the Truss *** the existence of vortex-induced motion(VIM) often exaggerates the drag coefficient. The 1:60 scale Truss Spar model tests have been conducted in towing tank at Zhejiang Ocean University(ZOU).The Truss Spar model consists of a hard tank with removable helical strakes,a truss section and a square soft *** coefficients for both stationary and vibrating Truss Spar were carefully *** current flow is uniform in all test cases and the Reynolds number is from 7E04 to *** was found that the drag coefficient of vibrating Truss Spar is obviously larger than that of stationary Truss Spar,and the drag coefficient of the Truss Spar with strakes is larger than that of the Truss Spar without *** the drag coefficient is also affected by current headings.
The open channel flow characteristics effected by piers is a classic problem in the study of ***-dimensional mathematical models for a single pier and a single row of piers open channel flows were established based on...
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The open channel flow characteristics effected by piers is a classic problem in the study of ***-dimensional mathematical models for a single pier and a single row of piers open channel flows were established based on computational fluid dynamics commercial software *** standard Volume of Fluid,(VOF) method was used to simulate the free surface and the k-εmodel was used for turbulent *** time-domain dependent method was applied to solve the unsteady *** the basis of experimental data contrast with the open channel flow,the effects of the open channel flow velocity,water level,the shear stress,the drag coefficient of piers under different horizontal spacing were *** results show that compared with the single pier S / D = 3,the longitudinal velocity changes along faster;the backed up water value and the plunge water value of the center pier were both greater;the maximum shear stress and the erosion range were larger;the shielding effect between the piers was very obvious.S / D = 5.5,S / D = 8 were similar to single pier.
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