中文摘要：

针对单自由度液浮陀螺仪浮子在启动时的位置可能偏离几何中心的现象,首次研究了浮子在不同偏心程度下启动时液浮陀螺仪中浮子的受力情况。基于流体力学中球面Couette流的有关理论,结合计算流体力学并采用数值方法研究了浮子的受力情况。结果表明：浮子的偏心位置对压力与切应力大小分布有显著影响,且浮子两侧的压力差会随浮子偏心程度增加而增加。当浮子启动时偏心程度越大,浮子所受的合力也越大,极易造成浮子运动的不稳定,从而影响液浮陀螺仪的精度。

英文摘要：

This paper studied the force condition applied on the surface of the floater in liquid floated gyroscope （LFG）,specific to the eccentric startup of the floater. Based on the related theory of sphere coquette flow （SCF） in fluid mechanicsand computational fluid mechanics （CFD）, numerical simulation of the force condition was carried out by numericalmethod. Numerical calculation results implies that the eccentricity of the floater has significant effect on the normalpressure and shear stress distribution, and the increase of eccentric degree will enhance pressure differential between bothsides of the floater. As a result, the resultant force applied on the floater will be bigger when the floater starts eccentrically,which may cause the instability of the floater motion and make influence on the accuracy of LFG.