CAJ | 학술논문

以 SUBOFF 标模为基础，采用大涡模拟，Lighthill 理论和 FW - H 方程，数值模拟了4种不同形式流水孔（纵缝式、全孔式、底部孔式及光体）潜艇的内外流场；数值模拟给出了流水孔流场的精细结构，计算并分析了潜艇各个壁面上阻力成分的大小与成因。计算得到的流水孔阻力增量与试验值吻合较好；对计算结果的分析表明：流水孔引起的阻力增量主要集中在导流板与流水孔壁上；内部空腔壁上的阻力值是可以忽略的小量；流噪声与流水孔数量的关系呈正比；计算结果表明：在此使用的方法可用于模拟流水孔内外流场。
이 SUBOFF 표모위기출，채용대와모의，Lighthill 이론화 FW - H 방정，수치모의료4충불동형식류수공（종봉식、전공식、저부공식급광체）잠정적내외류장；수치모의급출료류수공류장적정세결구，계산병분석료잠정각개벽면상조력성분적대소여성인。계산득도적류수공조력증량여시험치문합교호；대계산결과적분석표명：류수공인기적조력증량주요집중재도류판여류수공벽상；내부공강벽상적조력치시가이홀략적소량；류조성여류수공수량적관계정정비；계산결과표명：재차사용적방법가용우모의류수공내외류장。
The internal and external flow fields of a submarine with four kinds of water holes(shutter and narrow rectangular shape)were numerically simulated by solving large eddy simulation,Lighthill and FW-H equations. Detailed flow structures around the water holes were presented. Each component of resistance on different walls was computed and analyzed. The analysis of computed results indicates that the resist-ance increment caused by water hole is mainly from bafflers and hole walls,and resistance on interior walls is small and can be neglected,and vortex motion can be observed obviously within every two bafflers. The results show that the method of the article can be used to simulate the internal and external flow fields.