scholarly journals Numerical assessment of parameters influencing the modal response of a Kaplan turbine model

2021 ◽  
Vol 774 (1) ◽  
pp. 012057
Author(s):  
Rafel Roig ◽  
Oscar De La Torre ◽  
Esteve Jou ◽  
Xavier Escaler
Keyword(s):  
Kaplan Turbine ◽  
Modal Response ◽  
Numerical Assessment ◽  
Turbine Model

Frequency Stability in Island Networks: Development of Kaplan Turbine Model and Control of Dynamics

2018 ◽  
Author(s):  
Michael Gratza ◽  
Rolf Witzmann ◽  
Christoph J. Steinhart ◽  
Michael Finkel ◽  
Martin Becker ◽  
...  
Keyword(s):  
Frequency Stability ◽  
Kaplan Turbine ◽  
And Control ◽  
Turbine Model

scholarly journals Numerical analysis of a Kaplan turbine model during transient operation

2019 ◽  
Vol 240 ◽  
pp. 022046 ◽  
Author(s):  
R G Iovănel ◽  
D M Bucur ◽  
G Dunca ◽  
M J Cervantes
Keyword(s):  
Numerical Analysis ◽  
Transient Operation ◽  
Kaplan Turbine ◽  
Turbine Model

scholarly journals Numerical analysis of fluid-added parameters for the torsional vibration of a Kaplan turbine model runner

2017 ◽  
Vol 9 (10) ◽  
pp. 168781401773289 ◽  
Author(s):  
Arash Soltani Dehkharqani ◽  
Michel J Cervantes ◽  
Jan-Olov Aidanpää
Keyword(s):  
Numerical Analysis ◽  
Torsional Vibration ◽  
Kaplan Turbine ◽  
Turbine Model

Differential Evolution-Based Identification of the Nonlinear Kaplan Turbine Model

2014 ◽  
Vol 29 (1) ◽  
pp. 178-187 ◽  
Author(s):  
Dalibor Kranjcic ◽  
Gorazd Stumberger
Keyword(s):  
Differential Evolution ◽  
Kaplan Turbine ◽  
Turbine Model

scholarly journals Numerical Simulation of the Flow in a Kaplan Turbine Model during Transient Operation from the Best Efficiency Point to Part Load

Energies ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 3129
Author(s):  
Raluca G. Iovănel ◽  
Georgiana Dunca ◽  
Diana M. Bucur ◽  
Michel J. Cervantes
Keyword(s):  
Time Discretization ◽  
Rate Variation ◽  
Transient Operation ◽  
Time Step ◽  
Stagnation Region ◽  
Part Load ◽  
Additional Information ◽  
Runner Blade ◽  
Kaplan Turbine ◽  
Turbine Model

The aim of this study is to develop a reliable numerical model that provides additional information to experimental measurements and contributes to a better exploitation of hydraulic turbines during transient operation. The paper presents a numerical analysis of the flow inside a Kaplan turbine model operated at a fixed runner blade angle during load variation from the best efficiency point (BEP) to part load (PL) operation. A mesh displacement is defined in order to model the closure of the guide vanes. Two different types of inlet boundary conditions are tested for the transient numerical simulations: linear flow rate variation (InletFlow) and constant total pressure (InletTotalPressure). A time step analysis is performed and the influence of the time discretization over the fluctuating quantities is discussed. Velocity measurements at the corresponding operating points are available to validate the simulation. Spectrogram plots of the pressure signals show the times of appearance of the plunging and rotating modes of the rotating vortex rope (RVR) and the stagnation region developed around the centerline of the draft tube is captured.

scholarly journals Dynamic measurements on a Kaplan turbine: model – prototype comparison

2019 ◽  
Vol 240 ◽  
pp. 022006
Author(s):  
M Angulo ◽  
C Lucino ◽  
F Botero ◽  
A Rivetti ◽  
S Liscia
Keyword(s):  
Dynamic Measurements ◽  
Kaplan Turbine ◽  
Turbine Model

Kaplan turbine model validation for large grid frequency disturbances

2020 ◽  
pp. 1-1
Author(s):  
Elin Dahlborg ◽  
Per Norrlund ◽  
Linn Saarinen
Keyword(s):  
Model Validation ◽  
Kaplan Turbine ◽  
Turbine Model ◽  
Large Grid
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