基于Fluent的气浮测力传感器静特性研究  

Study on Static Characteristics of Flotation Force Sensor Based on Fluent

作　　者：黄斌[1] 张文伟[1] 陈世静[1] 

机构地区：[1]合肥工业大学仪器科学与光电工程学院,安徽合肥230009

出　　处：《润滑与密封》2013年第6期6-11,共6页Lubrication Engineering

基　　金：国家自然科学基金资助项目(61072032);安徽省自然科学基金资助项目(1208085ME76)

摘　　要：推导并建立气浮测力传感器承载力与承压腔压力之间的静特性方程;运用Gambit软件建立二维对称喷嘴模型,并通过Fluent仿真研究喷嘴节流孔直径、承压腔直径和深度、喷嘴直径对承压腔内速度分布和压力分布等静特性的影响规律。结果表明,喷嘴节流孔直径和承压腔深度越大气膜层流动状态越稳定,喷嘴的承载力越大;承压腔直径越大,气膜层流动状态趋于紊乱,承载能力增大但承载效率降低;喷嘴直径的改变对气膜层流动状态的影响不显著。通过实验验证实验和软件仿真建立的承载力与承压腔压力之间的关系曲线趋势一致,且都呈现一种近似的线性关系。The flotation force sensor＇s static characteristic equation between carrying capacity and confined cavity pres- sure was established. A two-dimensional symmetric nozzle model was created using Gambit software, and the influence law of nozzle orifice diameter, pressure cavity diameter and depth, nozzle diameter on the velocity distribution and pressure dis- tribution in the pressure cavity was studied through the Fluent software simulation. The results show that, the larger the noz- zle orifice diameter and pressure cavity depth, the more stable the gas film and the greater carrying capacity; the larger the pressure cavity diameter, the more disorder the gas film and the greater carrying capacity, but the lower bearing efficiency; the effect of the nozzle change is not significant to the gas film flow. The experiment verifies that the relationship curve between carrying capacity and confined cavity pressure established by experiment and software simulation has the same trend and presents a kind of approximate linear relationship.

关 键 词：气浮测力 传感器 静特性 

分 类 号：TH823[机械工程—仪器科学与技术]