巡航状态下泵喷推进潜艇尾部喷流涡特性研究  

Study on characteristics of pump-jet propelled submarine tail jet vortex under cruising conditions

作　　者：郭荣 王乾年 韩伟[1,2] 李舟睿 GUO Rong;WANG Qiannian;HAN Wei;LI Zhourui(School of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Key Laboratory of Fluid Machinery and Systems of Gansu Province,Lanzhou 730050,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]甘肃省流体机械及系统重点实验室,甘肃兰州730050

出　　处：《华中科技大学学报（自然科学版）》2024年第4期94-99,共6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(52009050);中国博士后科学基金资助项目(2020M673537);甘肃省自然科学基金资助项目(20JR10RA172);兰州理工大学红柳优秀青年人才支持计划项目.

摘　　要：采用DES(分离涡模型)湍流模型对巡航状态下泵-艇一体化模型进行全流域非定常数值模拟,利用Ω准则识别捕捉不同航速的泵喷尾部流场中的涡结构,研究喷流涡的动力学特性.结果表明:潜艇和泵喷推进器外部绕流与尾部喷流相互作用,产生不同的流场区域,随着航速增加无旋区和流场扩散区范围增加,艇体绕流和尾部喷流以更快的速度产生强耦合作用,并沿着潜艇前进的反方向发展和运动;随着航速增加毂涡变化区间不断增加,剪切层涡的范围和能量及脱落涡的能量也随着航速的增加而增加;旋转周期内,流场中部毂涡和脱落涡相互影响较弱,两种涡沿着叶轮旋转方向做无周期的旋转运动,流场尾部两种涡产生复杂影响,随时间产生无规则变化及运动.The detached eddy simulation(DES)model was used to simulate the pump-boat model under cruising conditions.Ωcriterion was used to identify and capture the vortex structure in the flow field of the pump jet tail at different speeds,and the dynamic characteristics of the jet vortex were studied.Results show that the external flow around the submarine and the pump-jet propeller could interact with the tail flow,resulting in different flow field regions.With the increase of speed,the irrotational zone and the range of flow field diffusion zone increase,the body flow around the jet and the tail flow produce strong coupling effect at a faster speed,and develop and move along the opposite direction of the submarine.The range and energy of shear layer vortexes and the energy of shedding vortexes also increase with the speed increasing.During the rotation period,the hub vortex and the shedding vortex in the middle of the flow field have weak mutual influence,and the two vortices rotate irregularly along the rotating direction of the impeller,while the two vortices at the tail of the flow field produce complex influences and produce irregular changes and movements with time.

关 键 词：泵喷推进器 巡航状态 尾部喷流 涡特性 Ω准则 

分 类 号：U664.34[交通运输工程—船舶及航道工程]