CAJ | 학술논문

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。
침대단자유도액부타라의부자재계동시적위치가능편리궤하중심적현상，수차연구료부자재불동편심정도하계동시액부타라의중부자적수력정황。기우류체역학중구면Couette류적유관이론，결합계산류체역학병채용수치방법연구료부자적수력정황。결과표명：부자적편심위치대압력여절응력대소분포유현저영향，차부자량측적압력차회수부자편심정도증가이증가。당부자계동시편심정도월대，부자소수적합력야월대，겁역조성부자운동적불은정，종이영향액부타라의적정도。
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 mechanics and computational fluid mechanics (CFD), numerical simulation of the force condition was carried out by numerical method. Numerical calculation results implies that the eccentricity of the floater has significant effect on the normal pressure and shear stress distribution, and the increase of eccentric degree will enhance pressure differential between both sides 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.