CAJ | 학술논문

基于有限元软件Fluent计算楔形体和圆锥体的入水砰击压力，并与试验结果进行比较，对于砰击压力分布及楔形体入水速度变化过程二者吻合较好。重点研究楔形体长宽比对砰击压力的影响。研究发现，楔形体长宽比对砰击压力影响较大，当楔形体长宽比大于3时，三维楔形体中横剖面的砰击压力计算可近似简化为具有同样剖面的二维楔形体入水问题。楔形体入水角对砰击压力极值的分布有很大的影响，相同入水速度条件下，楔形体的砰击压力极值比圆锥体的砰击压力极值大。
기우유한원연건Fluent계산설형체화원추체적입수팽격압력，병여시험결과진행비교，대우팽격압력분포급설형체입수속도변화과정이자문합교호。중점연구설형체장관비대팽격압력적영향。연구발현，설형체장관비대팽격압력영향교대，당설형체장관비대우3시，삼유설형체중횡부면적팽격압력계산가근사간화위구유동양부면적이유설형체입수문제。설형체입수각대팽격압력겁치적분포유흔대적영향，상동입수속도조건하，설형체적팽격압력겁치비원추체적팽격압력겁치대。
This paper calculates the slamming pressure of wedge and cone based on software of Fluent. The result agrees well with the experiment in term of the velocity of wedge during entry water and distribution of the slamming pressure. This paper mainly studies the effect of ratio on slamming pressure. The result indicates that the ratio have a great impact on slamming pressure. It could calculate slamming pressure of two-dimensional wedge instead of three-dimensional wedge which has the same middle section with the two-dimensional wedge when the ratio is higher than three. The wedge′s deadrise angle has a great impact on the distribution of extreme of slamming pressure. The slamming pressure of wedge is higher than those of cone when it entry water with the same speed.