摘要
基于CFD技术,采用RNGk-ε湍流模型及混合网格技术,数值模拟了某潜器孤立艇体、孤立螺旋桨、艇体吊舱模型、艇桨模型以及艇桨吊舱模型的水动力性能.分析了艇体、螺旋桨以及吊舱之间的相互干扰.计算结果显示:吊舱对艇体阻力和螺旋桨推力干扰较小;直航时,由于吊舱的存在,艇体吊舱模型产生了纵倾力矩以及升力,艇体阻力略有减小;艇桨干扰对艇体表面压力分布影响较大,以1.5m/s匀速航行时,由于螺旋桨的存在,艇桨模型中艇体总阻力增加18.03%,艇桨吊舱模型中潜器(艇体和吊舱)总阻力增加17.63%.
Based on computational fluid dynamics（CFD） technique,the hydrodynamic performance of the body,propeller,body with appendages,the body with propeller,and the body with propeller and appendages were simulated numerically by RNG k-ε turbulent model and hybrid grid.The hydrodynamic interaction between body,propeller and appendages were analyzed.The calculation results show that the influence of appendages on the body resistance and propeller thrust is small.In the detect sailing,the body with appendages model produce pitching moment,lift,and the body resistance is reduced because of the existing of appendages.The distribution of pressure on the surface of the body is greatly influenced by the interaction between the body and propeller;the body resistance is increased 18.03% in the body with propeller model and the body with appendages increase 17.63% in body with appendages and propeller when the propeller is working at the uniform velocity of 1.5 m/s.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2012年第12期94-97,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金资助项目(51009038)
关键词
智能水下机器人
螺旋桨
吊舱
计算流体力学
水动力性能干扰
autonomous underwater vehicle（AUV）
propeller
appendages
CFD
hydrodynamic performance interaction
