微型标定风洞风机设计及流固耦合仿真分析  

Design and Fluid-solid Coupling Simulation Analysis of Miniature Calibration Wind Tunnel

作　　者：郝春生 李汇军 张思聪 胡捷 HAO Chunsheng;LI Huijun;ZHANG Sicong;HU Jie(Institute of Astronautics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学航天学院,江苏南京210016

出　　处：《机械制造与自动化》2020年第6期85-89,共5页Machine Building & Automation

基　　金：国家自然科学基金项目(41775039)。

摘　　要：为了对风速传感器进行标定,设计一种微型便携移动低速标定风洞。该风洞的尺寸级别达到了桌面级,采用轴流风机作为动力段,对微型标定风洞设备动力段叶轮进行参数化设计,建立三维模型,结合3D打印材料参数,应用ANSYS Workbench中CFX和Static Structural进行单向流固耦合仿真分析。对叶片内部流场及叶片内部流体气动压力和叶片表面压力分布进行分析,得到了压力分布云图以及考虑流固耦合影响后的叶片压力变形云图。对树脂材料叶轮结构进行模态分析,得到结构固有频率及前6阶振型,验证了采用3D打印材料作为叶片材料的可行性。To calibrate the wind speed sensor,a portable low-speed calibration wind tunnel is designed.The size level of the wind tunnel reaches the desktop level.The axial fan is used in it as the power section.The impeller of the power section of the micro-calibrated wind tunnel equipment is parameterized.A three-dimensional model is established.Combined with the 3D printing material parameters,CFX and Static Structural in ANSYS Workbench are used to simulate and analyze the one-way fluid-solid coupling.The internal flow field of the blade is analyzed,and the aerodynamic pressure and the pressure distribution on the blade surface are calculated.The pressure distribution nephogram and the pressure deformation nephogram of the blade in consideration of the effect of fluid-solid coupling are obtained.The modal analysis of the impeller structure made of resin material is carried out,and the natural frequencies and the first six modes of vibration are obtained.The feasibility of using 3D printing material as blade material is verified.

关 键 词：轴流风机 CFD 流固耦合 模态分析 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程] TP391.9[自动化与计算机技术—计算机应用技术]