Stress Analysis of Tubular Turbine Based on Fluid-Structure Coupling
A brief introduction of fluid-structure coupling and its classification were given, then according to the solving characteristics and application conditions of different coupling methods; sequential coupling method is chosen to calculate the stress distribution of a tide power plant tubular turbine.Stress calculations of the tubular turbine were conducted under the maximum water head, the designed water head, the average water head and the minimum water head working conditions in ANSYS Workbench.The research shows that in all of the four calculated working conditions, the maximum equivalent stress of the runner is located at the connection between the blades and the hub where stress concentration is obvious; the maximum deformation of the nmner lies in the outer edge of the blades and the deformation increases from the root to the outer edge; the maximum equivalent stress of the guide vane is located at the root and the maximum deformation lies in the outer edge.The maximum value of maximum equivalent stress of the runner and the guide vane occurs on the maximum water head working condition, whereas it is far less than the material yield limit, which means that static stress will not lead to the cracks of the blade or the guide vane.But it is still necessary to avoid stress concentration appearing periodically in case it causes fatigue failure.
tubular turbine fluid-solid coupling equivalent stress
Zhang Fu-xing Zheng Yuan Yang Chun-xia Jin Xiang-long Ding Lin
School of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing,210098,China School of Energy and Electrical Engineering,Hohai University,Nanjing,211100,China Snecma (Suzhou) company,Suzhou,215100,China
国际会议
the 3nd International Conference on Digital Manufacturing & Automation (第三届数字制造与自动化国际会议(ICDMA 2012))
桂林
英文
1261-1265
2012-08-01（万方平台首次上网日期，不代表论文的发表时间）