摘要
文章首先建立了全附体潜艇的几何模型,基于分块网格技术耦合生成了全附体的SUBOFFAFF-8潜艇外流场高质量结构化网格,采用RANS雷诺时均方法和SST k-ω湍流模型,并基于有限体积法(FVM),对潜艇粘性绕流场进行了数值计算研究。给出了潜艇纵中剖面线上压力系数、壁面剪应力系数,指挥台围壳和上尾翼表面三个不同高度处压力系数的纵向分布,以及模型总阻力的数值计算结果;并与DTMB水池试验结果进行了对比。结果表明,文中采用的数值模拟方法精度较高,合理有效,为深入研究全附体潜艇粘性绕流场奠定了基础。
Sections 1 and 2 of the full paper explain how we apply CFD （computational fluid dynamics） to calculating the viscous flow around a full-appendage submarine. Their core consists of： （ 1 ） we establish the geometric model of the SUBOFF AFF-8 full-appendage submarine and generate the high-quality multi-block structural grid of its flow field; （2） we use the Reynolds time-averaged method, the SST k-ω turbulence model and the finite volume method to numerically calculate the steady viscous flow around the submarine; （3） we give the longitudinal distributions of the pressure coefficient and wall shear stress coefficient along the upper meridian line and also the pressure coefficients at the three heights of the fairwater and the stern respectively; we also give the calculation results of the total resistance of the submarine and compare them with the experimental results obtained from the DTMB tow tank in the U. S. The simulation results, given in Figs. 4 through 9 and Table 1, and their analysis show preliminarily that the calculation results obtained with our method agree well with the experimental results obtained from the DTMB tow tank; this indicates that our numerical calculation method has high precision and is valid and effective, thus laying a solid foundation for the further study of the viscous flow around a submarine.
出处
《西北工业大学学报》
EI
CAS
CSCD
北大核心
2012年第5期689-693,共5页
Journal of Northwestern Polytechnical University
基金
教育部"新世纪优秀人才支持计划"(NCET-09-0074)
西北工业大学研究生创业种子基金(Z2012011)资助
关键词
计算流体力学
潜艇
分块网格技术
粘性流场
数值计算
computational fluid dynamics, models, numerical methods, pressure distribution, submarines, viscous flow
multi-block structural grid
