CAJ | 학술논문

在水下智能机器人（ AUV）方案设计阶段，针对如何在主尺度和巡航速度确定的前提下得到直航阻力最小的回转体形状这个问题，以Myring型回转体为研究对象，利用计算流体力学（ CFD）方法计算其在水中做匀速直航运动时的阻力并与试验值比较以验证准确性。分别对二维和三维2种网格形式，标准和加强2种壁面函数的计算精度和计算效率进行了对比，并在此基础上探讨单独改变艏部或艉部形状时阻力的变化规律。再利用EXCEL、ICEM、FLUENT建立优化平台，基于多岛遗传算法在限制条件范围内对Myring型回转体参数进行全局寻优，寻找不同流速时阻力最小的Myring型回转体，为AUV设计阶段的阻力性能预报和艇型优化提供参考。
재수하지능궤기인（ AUV）방안설계계단，침대여하재주척도화순항속도학정적전제하득도직항조력최소적회전체형상저개문제，이Myring형회전체위연구대상，이용계산류체역학（ CFD）방법계산기재수중주균속직항운동시적조력병여시험치비교이험증준학성。분별대이유화삼유2충망격형식，표준화가강2충벽면함수적계산정도화계산효솔진행료대비，병재차기출상탐토단독개변수부혹미부형상시조력적변화규률。재이용EXCEL、ICEM、FLUENT건립우화평태，기우다도유전산법재한제조건범위내대Myring형회전체삼수진행전국심우，심조불동류속시조력최소적Myring형회전체，위AUV설계계단적조력성능예보화정형우화제공삼고。
When main dimensions and cruising speed have been predefined, how to get an axisymmetric revolution body with minimal drag force at the conceptual design stage of autonomous underwater vehicles ( AUVs) has been a problem. This paper analyzed drag force of Myring shaped axisymmetric revolution body moving underwater in a di-rect route, at constant speed, by CFD method and compared with the experiment value to check the veracity. 2D or 3D mesh, standard or enhanced wall treatment function was adopted respectively to figure out the accuracy and effi-ciency. And on this basis, the change law of drag when changing merely length and shape of the nose or tail was discussed. Based on multi-island and genetic algorithm ( MIGA ) , an optimization platform was constructed with EXCEL, ICEM and FLUENT to search for the best axisymmetric revolution body with minimal drag force at differ-ent speed when volume is predefined. This is a good reference for calculating and minimizing total drag of AUVs.