Publicações

Xiang, G., Wang, S. and Guedes Soares, C. (2020), “Study on the Motion of a Freely Falling Horizontal Cylinder into Water using OpenFOAM”, Ocean Engineering, Vol. 196, pp. 106811-1 - 106811-13

The sinking of a horizontal cylinder from the water surface until the sea bottom is investigated through OpenFOAM based CFD method. A good agreement between the simulations and experimental data for a negatively buoyant (relative cylinder to water mass density, p'>1) falling horizontal cylinder with initial water entry velocity, Vs=0.5m/s, demonstrated the accuracy of the numerical model. Factors such as the mass density p' of the cylinder relative to the water, and the initial water entry velocity are studied. The whole dropping process of horizontal cylinders with different relative mass density is simulated. Simulations are also conducted for studying a positively buoyant cylinder (p'>1)with various initial water entry velocity. The relative mass density and initial water entry velocity are found to have significant influence on the motion behavior, including in-plane and out-of-plane motions, hydrodynamic forces including viscous force and pressure force of the freely falling horizontal cylinder.

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