基于流固耦合理论的长寿命陀螺仪浮子内部流场及温度场分析  

Analysis on temperature field and inner flow field of long-life gyro's floater with Fluid-Structure coupling theory

作　　者：李德才[1] 魏艳勇[1] 韦俊新[1] 韩香莹[1] 武丽花[1] 

机构地区：[1]天津航海仪器研究所,天津300131

出　　处：《中国惯性技术学报》2007年第6期721-724,759,共5页Journal of Chinese Inertial Technology

基　　金：国防科技重点预研项日(622010708)

摘　　要：为精确计算出陀螺仪内部温度场,有效改善影响陀螺仪精度的温度梯度分布状况,采用了精度更高的流固耦合计算方法,结合FLUENT软件,对卫星等上使用的某型长寿命陀螺仪浮子组件进行了内部流场及温度场计算。结果表明,浮子内部结构形式对高速旋转的电机产生的介质流场有较大影响,合理的结构设计有利于降低电机功耗;陀螺仪浮子表面存在最大温差为0.52℃的温度梯度,其所产生的液流力矩会对陀螺仪精度产生一定影响;浮子表面温度分布表现出一定的对称性和规律性。计算结果为下一步旨在减小温度梯度、提高陀螺仪精度的精密分区温控提供了数据基础。To accurately calculate the gyro＇s inner temperature field and improve the temperature gradient distribution, the Fluid-Structure coupling theory was adopted with FLUENT software to calculate the temperature field and inner flow field of the floater components of a certain long-life gyro for satellite application. The result shows that the inner structure of the floater components has great influence on the medium flow field produced by high velocity rotating motor, and a proper structure design is beneficial to the reducing of motor power consumption. There is a temperature difference, the largest is 0.52 ℃, on the floater surface, and the fluid moment produced by the temperature difference has certain influence on the gyro precision. The temperature distribution of the floater surface has some symmetry and regularity. The result of calculation provides data basis for precision zoning temperature-control whose intention is to reduce temperature gradient and increase gyro precision.

关 键 词：流固耦合理论 流场 温度场 陀螺仪浮子组件 

分 类 号：U666.1[交通运输工程—船舶及航道工程]