无线测量装置空气动力学优化与仿真及高分子材料3D打印研究

Aerodynamics Optimization and Simulation of Wireless Measurement Device and 3D Printing of Polymer Materials

无线地磁测量装置是检测复杂地质及管道构造的重要设备之一,在进行测量工作时搭载在无人机上,其外壳一般采用注塑加工。采用传统注塑加工的外壳在装置快速拆卸及更换等方面存在缺陷,为了优化外壳结构并提升飞行与操作稳定性,针对现有外壳结构存在的种种缺点提出优化方案,采用抽拔式可拆卸部件组合成型代替一体式注塑成型,在原有结构基础上引入减阻装置,利用ANSYS软件中Fluent模块,对优化前后外壳整体的空气动力学性能进行数值仿真。仿真表明,优化后外壳表面最大空气流速、最大压力、最大剪应力分别降低了27.8%、33.1%和45.5%。优化方案能够改善外壳的空气动力学特性,外壳工作时的稳定性得到提高,也侧面提高了其测量精度。

Wireless geomagnetic measuring device was one of the important equipment for detecting complex geology and pipeline structure.It was carried on the drone during the measuring work,and its shell was generally made of injection molding.The shell produced by traditional injection molding processing had defects in quick removal and replacement of the device.In order to optimize the structure of the shell and improve flight and operation stability,the optimization scheme was proposed focusing on the existing defects of the shell structure.The pull type removable parts composite forming could replace the one-piece plastic injection forming.The drag reduction device was introduced on the basis of the original structure.By using Fluent module in ANSYS software,the aerodynamic performance of the whole shell before and after optimization was numerically simulated.The simulation results show that the maximum air velocity,maximum pressure and maximum shear stress on the shell surface after optimization are reduced by 27.8%,33.1%and 45.5%respectively.The optimization scheme in this paper could improve the aerodynamic characteristics of the shell,improve the stability of the shell during working,and also improve the measurement accuracy.