Results 111 to 120 of about 18,405 (147)
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IOP Conference Series: Earth and Environment, 2022
The present work examines the effects of the radial protrusion of four cylindrical rods at different lengths within the flow field of a down-scaled turbine draft tube under part-load operating conditions.
S. Shiraghaee +3 more
semanticscholar +1 more source
The present work examines the effects of the radial protrusion of four cylindrical rods at different lengths within the flow field of a down-scaled turbine draft tube under part-load operating conditions.
S. Shiraghaee +3 more
semanticscholar +1 more source
Siberian Journal of Physics, 2016
Current work is devoted to experimental investigations of behavior of precessing vortex rope in a draft tube model of hydraulic turbine. We used combination of stationary and freely rotating swirlers as a hydro turbine model.
S. Skripkin +3 more
semanticscholar +1 more source
Current work is devoted to experimental investigations of behavior of precessing vortex rope in a draft tube model of hydraulic turbine. We used combination of stationary and freely rotating swirlers as a hydro turbine model.
S. Skripkin +3 more
semanticscholar +1 more source
Pressure fluctuation and flow instability in S-shaped region of a reversible pump-turbine
, 2020To understand the pressure fluctuations occurring in S-shaped region of the pump-turbine and their relationships with rotor-stator interaction, rotating stall and vortex rope, the numerical and experimental studies of a reversible pump-turbine were ...
Wenwu Zhang +3 more
semanticscholar +1 more source
International Journal of Fluid Machinery and Systems, 2023
S. Shiraghaee +3 more
semanticscholar +1 more source
S. Shiraghaee +3 more
semanticscholar +1 more source
Optimization of axial water injection to mitigate the Rotating Vortex Rope in a Francis turbine
, 2021Hessan Jafarzadeh Juposhti +2 more
semanticscholar +1 more source
Symmetry
Flexible grid regulation necessitates Francis turbines to operate at heads of 120–180 m (compared to the rated head of 154.6 m), breaking the designed rotational symmetry and inducing hydraulic instabilities that threaten structural integrity and ...
Hong Hua +3 more
semanticscholar +1 more source
Flexible grid regulation necessitates Francis turbines to operate at heads of 120–180 m (compared to the rated head of 154.6 m), breaking the designed rotational symmetry and inducing hydraulic instabilities that threaten structural integrity and ...
Hong Hua +3 more
semanticscholar +1 more source
IOP Conference Series: Earth and Environment
The wide range operation of Francis turbines is a challenging requirement. Often, leads to development of strong unsteady phenomena (e.g., vortex rope) associated with strong pressure pulsations.
R. Szakal, A. Bosioc, S. Muntean
semanticscholar +1 more source
The wide range operation of Francis turbines is a challenging requirement. Often, leads to development of strong unsteady phenomena (e.g., vortex rope) associated with strong pressure pulsations.
R. Szakal, A. Bosioc, S. Muntean
semanticscholar +1 more source
Journal of Physics: Conference Series
The synchronous condenser mode of pumped storage power stations is primarily used to ensure voltage stability in the power grid. The free water surface in the draft-tube experiences fluctuations during this process.
Xinhao Wu +5 more
semanticscholar +1 more source
The synchronous condenser mode of pumped storage power stations is primarily used to ensure voltage stability in the power grid. The free water surface in the draft-tube experiences fluctuations during this process.
Xinhao Wu +5 more
semanticscholar +1 more source
Experimental investigations of pressure fluctuations in low-head francis turbine model
Proceedings of the Institution of mechanical engineers. Part A, journal of power and energyThe present study emphasizes the experimental investigations of pressure fluctuations characteristics of the steady flow behavior in a low-head Francis turbine model operating under various load conditions.
Nitin Kumar Jhankal, Arun Kumar
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Runner cone optimization to reduce vortex rope-induced pressure fluctuations in a Francis turbine
Science China Technological Sciences, 2021Deyou Li +5 more
semanticscholar +1 more source