人民黄河2016，Vol.38Issue(9)：99-102,4.DOI:10.3969/j.issn.1000-1379.2016.09.025
长短叶片混流式水轮机三维非定常流数值模拟
3D Unsteady Turbulent Simulation of Francis Turbine with Long and Short Blades
摘要
Abstract
In order to explore the inter flow characteristics on different openings in francis turbine with long and short blades, the unsteady numerical simulation of three dimensional turbulent flow were used in the whole flow of the turbine with long and short blades based on the method of calculation of the numerical simulation of the flow field. The results show that the frequency of pressure pulsation is the product of the runner frequency and blade number on the interface of the runner and vane in different openings, and the low flow rate condition has the maximum frequency amplitude. When the turbine operates are in the low flow rate conditions, the vortex looks like spirality in the draft tube, and the vortex rotates around the runner shaft are at the clockwise, which is the same as the runner. When the turbine operates are in the rated conditions, there is no vortex in the draft tube. And when the turbine operates are in the mass flow rate condition, the vortex looks like conical in the draft tube.关键词
长短叶片/混流式水轮机/非定常湍流/数值模拟Key words
long and short blades/francis turbine/unsteady turbulent flow/numerical simulation分类
能源科技引用本文复制引用
罗丽,黄霄霖洁..长短叶片混流式水轮机三维非定常流数值模拟[J].人民黄河,2016,38(9):99-102,4.基金项目
国家自然科学基金资助项目（51379179）；西华大学研究生创新基金资助项目（ ycjj2015042）。 （）
