CAJ | 학술논문

基于格林定理,将Bankine源和偶极子置于边界面上,用时间步进法计算了近自由面条件下的三维水翼的势流场.其中在自由面采用线性自由面边界条件,在尾涡面上采用偶极子布置以满足Kutta条件.影响系数中的奇异积分及非奇异积分都采用一种精确积分的方法计算.文中确定了计算模型和参数,给出了不同航速、展长及浸深下的数值计算结果,并与相关文献结果进行了对比,证实了该方法是一种可靠、有效的时域算法.
기우격림정리,장Bankine원화우겁자치우변계면상,용시간보진법계산료근자유면조건하적삼유수익적세류장.기중재자유면채용선성자유면변계조건,재미와면상채용우겁자포치이만족Kutta조건.영향계수중적기이적분급비기이적분도채용일충정학적분적방법계산.문중학정료계산모형화삼수,급출료불동항속、전장급침심하적수치계산결과,병여상관문헌결과진행료대비,증실료해방법시일충가고、유효적시역산법.
A time domain panel method based on Green's theorem was developed for the hydrody-nanuc analysis of a three -dimensional hydrofoil moving under the free surface.The Rankine sources and dipoles are distributed on boundary surfaces including the hydrofoil body surface and free surface. The dipoles are also placed on the wake surface. The Kutta condition is satisfied. A time-stepping computation scheme is employed in this paper.The singular integrals and non-singu-lar integrals of influence coefficients are performed by an analytical method. The numerical results of pressure distribution,lifting force, wave resistance and wave patterns are presented for the three-dimensional hydrofoil. The computed results were compared with others, good agreements are ob-tained.