复杂构型潜器附加质量的研究

李刚, 段文洋, 郭志彬

哈尔滨工程大学船舶工程学院



摘要:

为了研究粘性和涡动对水下物体附加质量的影响,尤其是低雷诺数流动、复杂构型物体和强涡动情况下的影响,分别针对球体、椭球体和某型深潜器的附加质量采用数值和实验的方法进行了测定.数值方法采用了包括基于粘流和无粘流的CFD求解器及基于势流的Hess-Smith面元法3种途径,实验方法为常规船模约束实验,数值方法和实验都得到了物体的附加质量,并进行了对比分析.提出了一种利用Fluent标准k-ε模型及动网格的考虑粘性和涡动的附加质量计算方法.结果表明,粘性和涡动对简单物体附加质量的影响非常小,即使是面元法也已非常准确;而粘性和涡动对复杂构型物体的附加质量的影响可达到9%,数值方法只有在粘性流模型下才能得到可靠的结论.该研究对潜水器的水动力设计具有重要的指导意义.

关键词:  复杂构型潜器  附加质量  粘性和涡动  潜水器水动力

DOI：10.11918/j.issn.0367-6234.2010.07.030

分类号:U674.941

基金项目:国家自然科学基金资助项目(50779008)



Added mass of submerged vehicles with complex shape

LI Gang, DUAN Wen-yang, GUO Zhi-bin

College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001,China

Abstract:

In order to reflect the effect of viscousness and vortex on added mass of submerged vehicles,especially these with complex shape in low Reynolds flow and strong vortex,the measurement on added mass of vehicles with sphere,ellipsoid and complex shapes was carried out by numerical simulation and model test.Programs in numerical simulation include viscous and non-viscous fluent CFD solvers and potential Hess-Smith procedure.After simulation a series of experiments was carried out in towing tank.By comparing the results from simulation and experiments,it is found that for simple shape bodies,the viscousness and vortex have little effects on added mass,and each numerical simulation program does the work even based on potential flow.While for vehicles with complex shape,their effects are large and up to 9%,only viscous solver results are relative to model test results.These conclusions are useful in hydrodynamic design of submerged vehicles.

Key words:  submerged vehicles with complex shape  added mass  viscousness and vortex  hydrodynamics of submerged vehicle