CAJ | 학술논문

应用滑移网格技术对粘性流场中吊舱推进器的水动力性能进行了数值模拟,成功预报了吊舱推进器在粘性流场中的敞水性能,和试验结果相比,推力系数最大偏差为2.9%,扭矩系数最大偏差为0.8%.考察了吊舱推进器各部件及周围的流动特征,包括压力分布、速度矢量分布、流线及涡的形态等,为吊舱推进器各部件的优化设计以及吊舱推进器在工程上的应用提供了详细的流场信息.
응용활이망격기술대점성류장중조창추진기적수동력성능진행료수치모의,성공예보료조창추진기재점성류장중적창수성능,화시험결과상비,추력계수최대편차위2.9%,뉴구계수최대편차위0.8%.고찰료조창추진기각부건급주위적류동특정,포괄압력분포、속도시량분포、류선급와적형태등,위조창추진기각부건적우화설계이급조창추진기재공정상적응용제공료상세적류장신식.
A numerical model of podded propulsor has been established, and the moving mesh is successfully applied to simulate the influence of running propeller. The open water performance characteristic of podded propulsor in unsteady viscous flow is numerically predicted, and the computed results are compared with the model test results, and the maximal difference of KT is about 2.9%, KQ is about 0.8%. It shows that the prediction technique developed in this paper is feasible. Further more some significant hydrodynamic phenomena of podded propulsor are focused and illustrated, including the pressure distribution on podded propulsor unit, the distribution of velocity vector around propeller plane and the characteristics of flow around the podded propulsor. The information of flow field is very helpful for optimizing of propulsion and for engineering applying.