Results 21 to 30 of about 46,180 (274)
Вдосконалення робочого процесу гідротурбін та систем їх регулювання [PDF]
, 2019 The paper provides the detail analysis of the causes of various types of the vortex motion of the turbulent flow in the inlet parts of the turbine and in the inter-blade channels of the runner.
Gasiyk, Alexander +3 more
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Researches regarding primary control in hydraulic systems
MATEC Web of Conferences, 2017 The technology in wind turbines has developed very rapidly but there are still a lot that can be improved also regarding new technologies. One example is wind turbine with hydraulic transmission.
Tița Irina, Mardare Irina
doaj +1 more source
The Effect of Inlet Swirl on the Rotordynamic Shroud Forces in a Centrifugal Pump [PDF]
, 1992 The role played by fluid forces in determining the rotordynamic stability of a centrifugal pump is gaining increasing attention. The present research investigates the contributions to the rotordynamic forces from the discharge-to-suction leakage flows ...
Acosta, A. J. +3 more
core +2 more sources
A superelement-based method for computing unsteady three-dimensional potential flows in hydraulic turbomachines [PDF]
, 1999 A numerical method is presented for the computation of unsteady, three-dimensional potential flows in hydraulic pumps and turbines. The superelement method has been extended in order to eliminate slave degrees of freedom not only from the governing ...
Esch, B.P.M. van +2 more
core +3 more sources
A Laminar Flow-Based Microfluidic Tesla Pump via Lithography Enabled 3D Printing
Sensors, 2016 Tesla turbine and its applications in power generation and fluid flow were demonstrated by Nicholas Tesla in 1913. However, its real-world implementations were limited by the difficulty to maintain laminar flow between rotor disks, transient efficiencies
Mohammed-Baker Habhab +2 more
doaj +1 more source
Experimental tests of the operating conditions of a micro gas turbine device [PDF]
, 2015 The aim of this work is to analyze the performance of a commercial micro gas turbine, focusing on the analysis of the fuel consumption and the outlet compressor and turbine temperature at various rpm, and to evaluate and compare the efficiency of the ...
CAPATA, Roberto
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Energies, 2023 Transient processes that occur in pumped storage power plants can cause high-pressure conditions, which in turn can result in vibrations in the pump–turbine structure and even damage to structural components.
Xilong Yin +4 more
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Advances in Mechanical Engineering, 2016 For pump–turbines, most of the instabilities couple with high-level pressure fluctuations, which are harmful to pump–turbines, even the whole units. In order to understand the causes of pressure fluctuations and reduce their amplitudes, proper numerical ...
De-You Li +5 more
doaj +1 more source
Covalently bonded interfaces for polymer/graphene composites [PDF]
, 2013 The interface is well known for taking a critical role in the determination of the functional and mechanical properties of polymer composites. Previous interface research has focused on utilising reduced graphene oxide that is limited by a low structural
Bengtsson, Carl +6 more
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Transient Flow-Induced Stress Investigation on a Prototype Reversible Pump–Turbine Runner
EnergiesPump–turbine units with high heads are subjected to strong pressure pulsations from the unsteady transient flow in fluid channels, which can produce severe vibrations and high stresses on the pump–turbine structural components.
Dehao Zhang +5 more
doaj +1 more source