Modeling of a Hydroelectric Unit with a Kaplan Turbine

2021 ◽  
Author(s):  
Ksenia A. Ivanova ◽  
Evgeniy N. Karuna ◽  
Petr V. Sokolov
Keyword(s):  
Kaplan Turbine ◽  
Hydroelectric Unit

Analysis of Hydroelectric Unit’s Upper Bracket Based on Test and FEM

2014 ◽  
Vol 721 ◽  
pp. 131-134
Author(s):  
Mi Mi Xia ◽  
Yong Gang Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Element Model ◽  
The Finite Element Method ◽  
Ansys Software ◽  
Element Analysis ◽  
Hydroelectric Unit ◽  
The Finite Element Analysis ◽  
Strain Rosette ◽  
The Finite Element Model

To research the load upper bracket of Francis hydroelectric unit, then established the finite-element model, and analyzed the structure stress of 7 operating condition points with the ANSYS software. By the strain rosette test, acquired the data of stress-strain in the area of stress concentration of the upper bracket. The inaccuracy was considered below 5% by analyzing the contradistinction between the finite-element analysis and the test, and match the engineering precision and the test was reliable. The finite-element method could be used to judge the stress of the upper bracket, and it could provide reference for the Structural optimization and improvement too.

scholarly journals Emergency Gate Vibration of the Pipe-Turbine Model

2000 ◽  
Vol 7 (1) ◽  
pp. 3-13 ◽  
Author(s):  
Andrej Predin ◽  
Roman Klasinc
Keyword(s):  
Data Transfer ◽  
Guide Vane ◽  
Natural Vibrations ◽  
Vibration Behavior ◽  
Kaplan Turbine ◽  
Gate Opening ◽  
Horizontal Shaft ◽  
Dynamic Similitude ◽  
The Moment ◽  
The Time Domain

The vibration behavior of an emergency gate situated on a horizontal-shaft Kaplan turbine is studied. The analysis and transfer of the dynamic movements of the gate are quite complex. In particular the behavior is examined of the emergency gate for the case when the power unit is disconnected from the system or there is a breakdown of the guide vane system at the moment when the maximal head and capacity are achieved. Experimental-numerical methods both in the time domain and in the frequency domain are employed. Natural vibrations characterize a first zone, corresponding to relatively small gate openings. As the gate opening increases, the vibration behavior of the gate becomes increasingly dependent on the swirl pulsations in the draft tube of the turbine. Finally, the data transfer from the model to the prototype by use of the dynamic similitude law is discussed.

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