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논문 기본 정보

저자정보
(부산대학교) (부산대학교) (부산대학교) (부산대학교)
저널정보
한국전산유체공학회 한국전산유체공학회 학술대회논문집 한국전산유체공학회 2013년도 춘계학술대회 논문집
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    초록·키워드

    In this paper, numerical simulations of water-entry of bodies are presented. Homogeneous flow model based on unsteady incompressible Reynolds-averaged Navier-Stokes equations was used to solve the flow field. Dual-time pseudo-compressibility method was employed to improve the computational efficiency of the solver. To investigate behavior of the water impact phenomenon, a VOF interface tracking algorithm known as the least squares volume-of-fluid interface reconstruction algorithm (LVIRA) is utilized to track the water-air interface. This approach uses the geometric information from the reconstructed interface and the velocity fields in each physical time step to update the volume fractions by solving the advection equation for water phase. The application to the computations of water impact of a hemisphere, two cones, and a wedge through free fall in one degree of freedom are performed. The free surface deformation, pressure coefficients, impact velocities and vertical accelerations during the impact are compared with available experiments and theoretical results. Good agreements with those results are obtained.

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      UCI(KEPA) : I410-ECN-0101-2014-420-002915858