3D打印螺旋桨流固耦合特性数值与模型试验研究  

Numerical and Model Experimental Study on Fluid-solid Coupling Characteristics of 3D Printing Propeller

作　　者：何朋朋 李子如[1,2] 刘谦 贺伟[1,2] HE Pengpeng;LI Ziru;LIU Qian;HE Wei(Key Laboratory of High Performance Ship Technology, Wuhan University of Technology, Wuhan 430063, China;School of Naval Architecture, Ocean and Energy Power Engineering, Wuhan University of Technology, Wuhan 430063, China)

机构地区：[1]武汉理工大学高性能舰船技术教育部重点实验室,武汉430063 [2]武汉理工大学船海与能源动力工程学院,武汉430063

出　　处：《武汉理工大学学报（交通科学与工程版）》2022年第3期443-448,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金(51609189,51775400);中央高校基本科研业务费专项资金(2019Ⅲ076GX)。

摘　　要：针对3D打印螺旋桨模型作为船模拖曳水池备用桨的适用性问题,基于流固耦合算法和拖曳水池对3D打印树脂材料螺旋桨模型的流固耦合特性进行了数值与模型试验研究.通过试件拉伸试验和点钻机测量试验研究了3D打印试件的力学性能和3D打印螺旋桨模型的加工精度.结果表明:3D打印加工方向对成型实体的弹性模量和泊松比有一定的影响;3D打印技术在螺旋桨加工精度和稳定性方面有待提高;3D打印螺旋桨的流固耦合效应较相同几何的金属桨突出,水动力作用下叶片产生了非常明显的弯曲和扭转变形,桨叶叶梢区域螺距比减小,进一步导致其推力系数和转矩系数均小于金属桨的对应量.Aiming at the applicability of 3D printed propeller model as spare propeller in towing tank of ship model,numerical and model tests were conducted on the fluid-solid coupling characteristics of 3D printed resin propeller model based on fluid-solid coupling algorithm and towing tank respectively.Then,the mechanical properties of 3D printed specimen and the machining accuracy of 3D printed propeller model were studied by tensile test and point drill measurement test.The results show that the processing direction of 3D printing has certain influence on the elastic modulus and Poisson’s ratio of the molded entity.3D printing technology needs to be improved in the accuracy and stability of propeller processing.The fluid-solid coupling effect of 3D printing propeller is more prominent than that of metal propeller with the same geometry,and the blade has obvious bending and torsion deformation under the action of hydrodynamic force.The reduction of the pitch ratio in blade tip region further leads to the thrust coefficient and torque coefficient of the blade being smaller than those of the metal blade.

关 键 词：3D打印 螺旋桨 模型试验 流固耦合 数值分析 

分 类 号：U664.33[交通运输工程—船舶及航道工程]