CAJ | 학술논문

为模拟潜艇回转运动，文中以结构化网格为基础，分别选取了基于固定坐标系的Mesh Motion方法和基于运动坐标系的添加动量源项方法对旋转导数进行预报，对全附体SUBOFF模型进行回转运动仿真，并与试验结果进行对比。结果表明：Mesh Motion方法和添加动量源项方法均满足工程要求，添加动量源项方法计算时，网格数目少，有效降低了计算耗时。最后，根据Y＋的不同分布，文中分析了回转运动中RNG k-ε湍流模型和SST k-ω湍流模型的计算精度和计算时间。
위모의잠정회전운동，문중이결구화망격위기출，분별선취료기우고정좌표계적Mesh Motion방법화기우운동좌표계적첨가동량원항방법대선전도수진행예보，대전부체SUBOFF모형진행회전운동방진，병여시험결과진행대비。결과표명：Mesh Motion방법화첨가동량원항방법균만족공정요구，첨가동량원항방법계산시，망격수목소，유효강저료계산모시。최후，근거Y＋적불동분포，문중분석료회전운동중RNG k-ε단류모형화SST k-ω단류모형적계산정도화계산시간。
In order to simulate submarine′s rotation movement , the mesh motion method fixed on the earth fixed coordinate system and the added momentum source method fixed on the submarine′s coordinate system are select-ed to predict the rotation derivatives .We calculated all-possessed SUBOFF model and compared it with experi-mental results.Both the mesh motion method and the added momentum source method meet the engineering re-quirements.The added momentum source uses less grids , so it can effectively reduce the computational time . Based on the different distributions of Y+, we analyze the accuracy and computation time of RNG k-ε turbu-lence model and SST k-ωturbulence model .