Results 11 to 20 of about 805,835 (276)
Systems Science & Control Engineering, 2023 This paper studies the stability comparison of four controllers for a hydraulic turbine fractional order interval parameter time-delay system. Considering the terms of parameter uncertainty and time-lag, the hydraulic turbine fractional order interval ...
Tian Tian, Jinhua Lv, Jian Tang
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Influence of rotational speed on performance of low specific speed hydraulic turbine in turbine mode
Advances in Mechanical Engineering, 2022 To study the influence of rotational speed on the performance of hydraulic turbine in turbine mode (T-type turbine), the performance of turbine at different rotational speed was predicted through theoretical analysis, based on the Navier-Stokes equation ...
Yanpin Li +6 more
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Energies, 2022 The present paper demonstrates a proof-of-concept by introducing a variable guide vane system in the draft tube of a high-head Francis model turbine. The aim is to examine the hydraulic performance of the turbine while mitigating the pressure pulsations ...
Jesline Joy +2 more
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Experimental Analysis of the Effect of Wear Factors on Guide Vane of Hydraulic Turbine
Machines, 2022 In this paper, in order to study the wear of the guide vane of the hydraulic turbine, a test bench was built according to the actual internal flow of the hydraulic turbine of the power station. The value of the wear of the surface of the guide vane after
Xiaoyi Zhao +4 more
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Optimization design of the elbow draft tube of the hydraulic turbine
IOP Conference Series: Earth and Environment, 2022 The draft tube of the hydraulic turbine serves to recover the kinetic energy of the water flow that leaves the runner. The amount of this energy depends on the turbine type, its specific speed and flow capacity.
A. Semenova +6 more
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Comparative analysis of air and water flows in simplified hydraulic turbine models
, 2022 This article presents a comparative analysis of flow characteristics behind a hydraulic turbine runner in air and water. Swirling flow with a precessing vortex core (PVC) was investigated using a laser Doppler anemometer and pressure pulsation sensors ...
S. Skripkin +5 more
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Numerical analysis of a new cross-flow type hydraulic turbine for high head and low flow rate
Engineering Applications of Computational Fluid Mechanics, 2021 Cross-flow turbines have recently been proposed for energy recovery in aqueducts when the outlet pressure is greater than zero, owing to their constructive simplicity and good efficiency within a large range of flow rates and head drops.
Calogero Picone +3 more
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Numerical Simulation of Hydraulic Turbine During Transient Operation Using OpenFOAM
IOP Conference Series: Earth and Environment, 2021 Power generation from intermittent renewable energy resources (e.g. wind, solar) requires regulation of the electric grid. Although most hydraulic turbines are designed to work in their best efficiency points, nowadays they are being used more often ...
S. Salehi +3 more
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Common Failures in Hydraulic Kaplan Turbine Blades and Practical Solutions
Materials, 2023 Kaplan turbines, as one of the well-known hydraulic turbines, are generally utilized worldwide for low-head and high-flow conditions. Any failure in each of the turbine components can result in long-term downtime and high repair costs.
Waleed Khalid Mohammed Ridha +2 more
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Applied Sciences, 2022 The vibration characteristics induced by radial hydraulic force on the fire turbopump have been investigated by numerical simulations in this paper. The numerical model was validated with corresponding experimental measurements.
Ye Yuan, Rong Jin, Lingdi Tang
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