CAJ | 학술논문

本文介绍了在一个高水头混流式水轮机项目转轮设计过程中由于增加了圆筒阀，而缩小了导叶分布圆，引起模型效率明显下降的问题。通过 CFD数值模拟技术对混流式水轮机进行分析，找到问题根源，采取对应措施进行解决。并且通过模型试验进行了验证。
본문개소료재일개고수두혼류식수륜궤항목전륜설계과정중유우증가료원통벌，이축소료도협분포원，인기모형효솔명현하강적문제。통과 CFD수치모의기술대혼류식수륜궤진행분석，조도문제근원，채취대응조시진행해결。병차통과모형시험진행료험증。
This paper deals with a problem in the runner design of Francis turbine. In this case, adding a cylindrical valve in the hydraulic system leads to reducing the guide vane circle, which induces an obvious decrease of model efficiency. To solve this problem, CFD technology was used to simulate the internal flow and the machanism was discovered. Consequently, corresponding measures were proposed and validated by model test.