A pumped storage stations model was set up and introduced in the previous paper. In the model station, the S-shaped characteristic curves was measured at the load rejection condition with the guide vanes stalling. Load rejection tests where guide-vane closed linearly were performed to validate the effect of the S-shaped characteristics on hydraulic transients. Load rejection experiments with di...

This paper presents the results of simulations of the complete three-dimensional fluid flow through the Spiral Casing, Stay Vane, Guide Vane, and then through the Francis turbine runner of the Derbendikan power station. To investigate the flow in the Francis turbine and also to identify the loads acting on the turbine blades, a three-dimensional model was prepared according to specifications pr...

Last month we began a new feature in celebration of our 20th anniversary of Hypertension. In this feature we are pleased to salute once again those special honorees and lecturers of the Council for High Blood Pressure Research (CHBPR) who later received Nobel Prize recognition for their seminal research achievement that had been recognized by the Council. Each of these individuals either had be...

Increasing the combustion temperatures in a gas turbine engine to achieve higher efficiency and power output also results in high heat loads to turbine components downstream of the combustor. The challenge of adequately cooling the nozzle guide vane directly downstream of the combustor is compounded by a complex vortical secondary flow at the junction of the endwall and the airfoil. This flow t...

This article represents experimental study work carried out on a single stage diffuser type centrifugal pump. The flow-induced pressure pulsations, mechanical vibrations and noise has been monitored during the experimentations for five different flow rates by varying the radial clearance. For each case of radial clearance and flow conditions, overall levels and frequency spectra, in a wide freq...

This paper is an abridged version of a TRIUMF design note[1]. The most important effect of using a non-ideal vane geometry is that the longitudinal field can depart substantially from the value calculated from the usual analytic formulae; and this may lead to beam loss due to inadequate acceleration. The effect is enhanced at low particle speed and low radio-frequency, as occurs at injection in...