CAJ | 학술논문

针对自主研制的大流量减压器,采用动网格技术和流固耦合仿真技术,将气体的流动和活动组件的运动耦合起来,实现了关闭过程中内部流场的动态仿真,描述了关闭过程减压器内压力和速度变化过程,掌握了流场中波系、回流区的演化情况。同时,通过对流场中不同位置参数进行监测,分析了监测点各参数随时间的变化情况,以及流量和开度的实时变化情况,研究了基于动态流场的关闭过程动态特性,揭示了影响动态特性的内在因素。
침대자주연제적대류량감압기,채용동망격기술화류고우합방진기술,장기체적류동화활동조건적운동우합기래,실현료관폐과정중내부류장적동태방진,묘술료관폐과정감압기내압력화속도변화과정,장악료류장중파계、회류구적연화정황。동시,통과대류장중불동위치삼수진행감측,분석료감측점각삼수수시간적변화정황,이급류량화개도적실시변화정황,연구료기우동태류장적관폐과정동태특성,게시료영향동태특성적내재인소。
Taking advantage of the dynamic mesh and fluid-solid coupling simulation technique,coupling the internal flow field and movement of the valve core,dynamic simulation of the internal flow field in closing process was achieved for independent research and development large flux pressure reducing valve.The changing process of the internal pressure and velocity of pressure reducing valve were described in the closing process.The evolution of wave system and reversed-flow region were obtained.The variety of parameters along with the time,and the real-time variety of the flow and the opening were analysed through monitoring different positions.The dynamic characteristics based on dynamic flow field closing process was studied.The inner factors effecting the dynamic characteristics were revealed.