Results 171 to 180 of about 41,738 (228)

Hydraulic Elastic Vibration Analysis of Hydraulic Turbine Blade

Advanced Materials Research, 2011
This paper analyses quantitatively mechanism that hydraulic turbine runner blade tail produces Carmen vortex column, and the blade hydraulic elastic vibration which is produced by Carmen vortex column, also analyses the harms of blade hydraulic resonance, puts forward corresponding preventative measures.
Ling Hua Wang, Pan Hua Ning, Chao Gan
openaire   +1 more source

Hydraulic characteristics of turbine impeller

Collection of Czechoslovak Chemical Communications, 1982
The study concentrates on the determination of hydraulic characteristics (volumetric flow rate, power output, hydraulic efficiency and total head) of a standard, six-blade turbine impeller in a flat-bottomed cylindrical vessel provided with radial baffles at a turbulent regime of agitated liquid. The investigated characteristics are determined by means
Ivan Fořt, Jana Malá
openaire   +1 more source

Hydraulic Turbine Setting Criteria

Journal of Engineering for Power, 1965
Higher settings of hydraulic turbines are proposed which will result in lower relative tailwater levels with associated operational improvements. Present selling criteria may lead to unsatisfactory operation at higher tailwater levels. Cavitation damage is not necessarily prevented by low settings, and draft-tube surges may occur under high tailwater ...
openaire   +1 more source

A new bladeless hydraulic turbine

Applied Energy, 2013
A water turbine constructed on the water turbulence or whirlpool principle is capable of utilizing very small sources even for untapped water, and it is highly suitable for the closed circuit production of electrical energy. The non-monotonic distribution of the radial velocity component is important for the onset of the driving force of the angular ...
V. Beran, M. Sedláček, F. Marˇs´ık
openaire   +1 more source

Hydraulic-Turbine Runner Vibration

Journal of Fluids Engineering, 1956
Abstract This paper describes an investigation of the vibration characteristics of Francis-turbine runners and some experiments to determine the influence of different shapes of runner-bucket discharge edges on the excitation forces. Modifications suggested by the experiments were made to field runners and were successful in eliminating ...
openaire   +1 more source

Problems Associated with Hydraulic Turbines

2018
Hydropower is a renewable source of energy and considered to be one of the most cost-efficient and environmentally friendly technology for electricity production. Hydropower has operational flexibility like quick starting, stopping and load variations, these help in improving the reliability of power systems by allowing it to work in different ...
Aman Kumar, Kunal Govil, Gaurav Dwivedi, Mayank Chhabra   +3 more
openaire   +1 more source

Measurement of Hydraulic-Turbine Vibration

Journal of Fluids Engineering, 1952
Abstract This paper describes a test program used to measure and eliminate the vibration which had produced extensive cracking in the blading of a slow-speed, 40,000-hp hydraulic turbine. Strains, accelerations, and pressures were measured at various locations on the turbine runner while the unit was in operation.
John Parmakian, R. S. Jacobson
openaire   +1 more source

Hydraulic turbine controller design

Journal of Applied Science, Engineering and Technology, 2006
No Abstract. Journal of Applied Science, Engineering and Technology Vol.
openaire   +2 more sources

Cavitation in Hydraulic Turbines

1962
The most common and troublesome maintenance problem encountered with hydraulic turbines is the erosion caused by cavitation. A study of the cavitation phenomenon has demonstrated that the pressure produced by the collapse of cavitation bubbles is sufficient to cause mechanical erosion of all known materials. However, the resistance to cavitation damage
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Hydraulic Turbines

2003
  +5 more sources