CAJ | 학술논문

为了计算吊舱推进器的非定常水动力性能,建立了用诱导速度势处理吊舱和螺旋桨非定常相互干扰的方法,并和用诱导速度处理两者相互干扰的方法作了对比分析.讨论了两种方法的数值计算中为了避免奇异性而对一些参数的设定方法.经过用两种方法对均匀来流和非均匀来流条件下水动力性能的计算比较,发现两种方法的计算结果很接近,并与模型试验结果吻合得很好,但用诱导速度势的方法编程工作量较诱导速度方法少,而且还可节省大量的计算时间和存储空间,是一种计算吊舱推进器和其他组合推进器水动力性能相对简单而且有效的方法.
위료계산조창추진기적비정상수동력성능,건립료용유도속도세처리조창화라선장비정상상호간우적방법,병화용유도속도처리량자상호간우적방법작료대비분석.토론료량충방법적수치계산중위료피면기이성이대일사삼수적설정방법.경과용량충방법대균균래류화비균균래류조건하수동력성능적계산비교,발현량충방법적계산결과흔접근,병여모형시험결과문합득흔호,단용유도속도세적방법편정공작량교유도속도방법소,이차환가절성대량적계산시간화존저공간,시일충계산조창추진기화기타조합추진기수동력성능상대간단이차유효적방법.
An unsteady BEM is used to calculate unsteady hydrodynamic performance of the podded propeller.The interactions between the propeller and the pod are treated by two iterative calculation methods:induced velocity and induced velocity potential.The method of setting some parameters is dis-cussed in order to avoid the singularity in calculation.Through the comparison of calculation results of two methods in the uniform and the non-uniform inflow,it is found that the results by two methods are very close. The calculation results by two methods are compared with open water test, and the agree- ment is well. The two methods can both perfectly simulate the hydrodynamics performance of podded propeller,and the method of induced potential needs less program work and can save a great deal of calculation time and memory space.It is a simpler and effective method to calculate hydrodynamics performance of podded propellers and other combined propulsions.