Abstract
The 2D impact phenomenon in calm water, considering symmetric entry with vertical velocity is studied. The analysis was performed by using commercial STAR-CCM+ computational fuid dynamics software. Thee results obtained from the simulations are pressure distribution and force during impact. The study was carried out for typical planning of boat sections. The results are compared with models and data obtained from some authors and they present very good agreement.
Highlights
Roberto Algarín 1 Antonio Bula 2 Oscar Tascón 3 e 2D impact phenomenon in calm water, considering symmetric entry with vertical velocity is studied. e analysis was performed by using commercial STAR-CCM+ computational uid dynamics software. e results obtained from the simulations are pressure distribution and force during impact. e study was carried out for typical planning of boat sections. e results are compared with models and data obtained from some authors and they present very good agreement
Seif et al (2005) simulated the impact using CFD tools for circular and wedge sections, considering symmetric and asymmetric entry over calm water with vertical velocity. e results obtained are very close to experimental results presented in the previous studies
Tveitnes (2001), studied the impact applying added mass theory. He calculated the lift force, and concluded that the hydrodynamic force experienced by a wedge section under symmetric entry and constant velocity entry, is generated by the variation of mass and ow moment
Summary
E force and pressure coe cients increase when the section submerges up to the point where the ow separates at the knuckle. Both coe cients present a trend similar to the concave section. Respect to Vorus (1996), the main di erence is after the ow separates from the knuckle where the simulations show higher value for pressure and force, and the error presents values similar to Caponnetto et al (2003)
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