CAJ | 학술논문

　　提出了同时考虑口环间隙水体以及叶轮叶片形变这两部分因素，运用时下较成熟的流固耦合技术，对多级离心泵首级进行了综合分析。分析表明，在大口环间隙情况下，口环间隙泄漏以及圆盘阻力损失是造成泵效率降低的明显因素，口环间隙1 mm时，在额定工况下，效率降低最大可达4％多。叶轮叶片在运行过程中，因泵输送介质压力作用而发生的变形，对泵性能影响较口环间隙水体影响而言较小。实际运行中，应尽量避免大口环间隙情况。
　　제출료동시고필구배간극수체이급협륜협편형변저량부분인소，운용시하교성숙적류고우합기술，대다급리심빙수급진행료종합분석。분석표명，재대구배간극정황하，구배간극설루이급원반조력손실시조성빙효솔강저적명현인소，구배간극1 mm시，재액정공황하，효솔강저최대가체4％다。협륜협편재운행과정중，인빙수송개질압력작용이발생적변형，대빙성능영향교구배간극수체영향이언교소。실제운행중，응진량피면대구배간극정황。
Ring gap leak of the impeller and blades deformation are consider with the use of the FSI technology ,mainly for the single stage impeller.The analysis result shows that the efficiency of the pump is dropped when the gap lek is in large size.For example when the size is equal to1mm,the efficiency is lower more than 4%.While the blades deforma-tion has less affect on the performance compared with the ring gap leak .So large ring gap size should be avoided in the actual operation .