Evaluation of a Dynamic Transfer Matrix for a Hydraulic Turbine
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The setting level of a hydraulic machine, specially for low head machines, is decided with respect to the possible alteration of the efficiency due to the cavity development. In the case of traveling bubble cavitation, corresponding to the outlet cavitatio ...
International Association For Hydraulic Research1994
In the field of hydraulic power plant, the leading edge cavitation is often responsible of sever erosion which may cause a premature shutdown of energy production with costly consequences. This type of cavitation is characterized by an attached vapour cavi ...
For the continuation of the study undertaken during the Amsterdam Symposium and within the framework of the "Work Group on the Behavior of Hydraulic Machinery under steady oscillatory conditions" the authors have the following objectives: - comparison betw ...
International Association For Hydraulic Research1984
Most of the severe erosion of hydraulic machines are found to be associated with the collapse of transient cavitation vortices downstream of a leading edge cavity. The dynamics of such a type of cavitation is investigated in a Cavitation Vortex Generator ( ...
In order to investigate the dynamics of the vortex cavitation, which is found to be responsible of the cavitation erosion in hydraulic machinery, a cavitation vortex generator (CVG) is used. By producing the cyclic growth and collapse of cavitation vortex, ...
Hydropower plants play an important regulatory role in the large scale integration of volatile renewable energy sources into the existing power grid. This duty however requires a continuous extension of their operating range, provoking the emergence of com ...
The Cavitation Erosion Power based on the assumption that severe erosion is often due to the repeated collapse of the traveling vortex generated by a leading edge cavity has been formerly introduced. We have shown that cavitation erosion intensity may be s ...
Experimental flow analysis of hydraulic machines is of prime importance for improving the design of such a unit. Moreover, computational fluid dynamics codes need an experimental data reference in order to check their ability to simulate the main flow feat ...
International Association For Hydraulic Research1990
The necessity of controling the nuclei content of the circuit water while conducting cavitation tests on mode! hydraulic machines is considered to be indispensable. We are presenting a description of our cavitation nuclei producing device, the so-called nu ...
International Association For Hydraulic Research1992
The electrochemical cavitation detection technique has been used to locate and measure the instantaneous cavitation erosion rate on a 2D NACA profile tested in the IMHEF high-speed cavitation tunnel. Nineteen titanium probes, flush mounted along the profil ...
