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Abstract
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Transom wave behind planing hulls is a complicated
physical phenomenon that has lead to computational
challenge for many researchers. On the other hand,
smoothed particle hydrodynamics (SPH) which is known
as a meshless Lagrangian approach can simulate free surface
flows with strongly nonlinear physics. Therefore,
effort has been made in the current study to develop a
3D-SPH code for three-dimensional simulation of transom
stern flow behind a rectangular planing hull. It is also
aimed to give some new physical insights into this highly
nonlinear problem. Different techniques such as sub particle
scale turbulence model and moving least square
density filter among others are also implemented. To validate
the developed 3D-SPH code, the benchmark problem
of dam breaking is investigated. Moreover, to verify the
capability of the presented SPH model for transom flow
simulation, previous experimental studies at low Froude
numbers are considered. Comparisons display good
agreement between the numerical results and experimental
findings. Furthermore, a detailed discussion about rooster
tail formation is presented.
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