工程设计学报2016，Vol.23Issue(1)：49-53,73,6.DOI:10.3785/j.issn.1006-754X.2016.01.008
精密离心机热变形多物理场耦合数值计算
Numerical simulation of multi-physics coupling for the thermal deformation of precision centrifuge
摘要
Abstract
Centrifuge is a calibrating device of accelerometer in inertial navigation system ,and de‐formation of the rotator could seriously affect the calibrating accuracy .The centrifuge indoor air flow ,heat transfer and heat conduction of cabinet and rotator were considered when the thermal deformation was analyzed through a multi‐field coupling simulation ,which combined the methods of CFD and FEM .The multi‐physics coupling calculation principles were analyzed .Temperature field was calculated by using conjugate heat transfer method ,and thermal deformation was ob‐tained by the sequential coupling method .The results showed that at speed of 300 r/min ,the max‐imum temperature rise was 1.23 ℃ ,and the farther away from the rotator center ,the bigger tem‐perature rise .The calculated temperature at the location for mounting accelerometer was consistent with the measured value .The radial deformation of the accelerometer location was 7.89μm .Thermal deforma‐tion is a result of accumulated deformation ,and increases with the rotating speed .关键词
精密离心机/多物理场耦合/流固耦合换热/温度场/热变形Key words
precision centrifuge/multi-physics coupling/fluid solid conjugate heat transfer/tem-perature field/thermal deformation分类
机械工程引用本文复制引用
卢燕,王珏,凌明祥,杜平安..精密离心机热变形多物理场耦合数值计算[J].工程设计学报,2016,23(1):49-53,73,6.基金项目
国家重大科学仪器设备开发专项（2011YQ130047）． （）
