몰수심도가 작은 고속 수중익 주위의 유동장에 대한 수치계산

Abstract

In order to better understand the characteristics of the flow field around the submerged hydrofoil of finite span with high speed and shallow submergence, a numerical code which can solve the flow around a fast lifting body under the free surface was developed and used to obtain various interesting features of the flow. The code was based on the panel method of Hess(1972), and the free surface condition was linearized to conform with the assumption of the high Froude number. It is shown that the effect of the change of submerged depth, angle of attack and aspect ratio upon the sectional lift coefficient is rather significant for the case of the chosen example wing, which has the rectangular planform. Since Lee(2002)'s theoretical results were for the wing of elliptical planform, the direct comparison of the two resutls was not possiible. It seems that more computational results are in need to compare the theoretical and the numerical prediction in detail.