CAJ | 학술논문

以双向流固耦合理论为基础，运用CFD技术对某蓄能机组推力轴承进行数值模拟，研究瓦面位置参数及材料对轴承润滑性能的影响。结果表明，瓦面倾角增大，油膜压力及承载增加，且压力中心区沿镜板旋转方向及瓦面径向外侧偏移；油膜间隙减小，压力及承载均增加。弹性模量减小，轴瓦压力梯度变缓，且压力极值中心向瓦侧边缘移动，因而适当降低轴瓦弹性模量，能够有效减少瓦面高压集中区域，提高轴承使用寿命。
이쌍향류고우합이론위기출，운용CFD기술대모축능궤조추력축승진행수치모의，연구와면위치삼수급재료대축승윤활성능적영향。결과표명，와면경각증대，유막압력급승재증가，차압력중심구연경판선전방향급와면경향외측편이；유막간극감소，압력급승재균증가。탄성모량감소，축와압력제도변완，차압력겁치중심향와측변연이동，인이괄당강저축와탄성모량，능구유효감소와면고압집중구역，제고축승사용수명。
Based on fluid?structure two?way coupling theory,the effects to the bearing lubricating properties caused by tile?surface position parameters and materials were studied by using CFD technology to make numerical simulations of a storage unit thrust bearing.The results show that film pressure and load are increased with the increasing of tile?surface in?clination,and the position of central pressure deflects along the outward rotation direction of the mirror plate and the radial direction of tile?surface.The pressure and load are both increased with the decreasing of oil clearance.The pressure gradient of the bearing pad is reduced with the decreasing of elastic modulus of the pad,and the position of maximum pressure is shifted to the side edge of the pad,indicating the concentration of the high?pressure region can be effectively reduced and the bearing life can be improved by appropriately reducing the elastic modulus of the pad.