CAJ | 학술논문

采用欧拉气液两相流动模型对液环真空泵内部三维非稳态气液两相流动进行数值模拟,通过数值模拟研究叶轮与壳体间的径向间隙及叶片型线对液环泵性能的影响,分析了液环泵内液相能量转换的规律,分析了前弯、后弯及直叶片不同叶片型线液环泵性能曲线,分析了叶轮径向间隙对液环泵性能的影响. 数值模拟结果表明后弯叶片、径向直叶片和前弯叶片下液环泵的极限真空度和最大流量依次递增;随着叶轮径向间隙的减小,液环泵的极限真空度和最大流量逐渐增大. 为液环泵的性能优化研究提供了理论依据.
채용구랍기액량상류동모형대액배진공빙내부삼유비은태기액량상류동진행수치모의,통과수치모의연구협륜여각체간적경향간극급협편형선대액배빙성능적영향,분석료액배빙내액상능량전환적규률,분석료전만、후만급직협편불동협편형선액배빙성능곡선,분석료협륜경향간극대액배빙성능적영향. 수치모의결과표명후만협편、경향직협편화전만협편하액배빙적겁한진공도화최대류량의차체증;수착협륜경향간극적감소,액배빙적겁한진공도화최대류량축점증대. 위액배빙적성능우화연구제공료이론의거.
The three dimensional transient gas-liquid flow in liquid-ring pump was simulated using Eulerian method.The impact of radial gap and blade profile on the performance of the liquid-ring pump was investigated by numerical simulation.The energy transfer law of liquid in liquid-ring pump was analyzed.The performance curves of liquid-ring pump with forward curved,straight, and backward curved blade profile were compared.The performance curves of different radial gap were compared.The numerical results show that the ultimate vacuum and maximum flow rate of liquid-ring pump with backward curved, straight, and forward curved blade profile increase successively,the ultimate vacuum and maximum flow rate increase gradually with the increase of ra-dial gap,which paved the way for hydraulic optimization of liquid-ring pump.