Author(s): Boris Huber
Linked Author(s): Boris Huber
Keywords: Physical model test; T-Junction; Hydraulic experiments; Throttle; CFD-simulation
Abstract: Hydraulic model tests were conducted to evaluate the head-losses and flow conditions of an asymmetrical throttle in a surge chamber system of an Austrian high-head power plant. The asymmetrical throttle is situated at the beginning of the rising shaft of the surge tank in one of the three branches of a T-shaped junction. Due to the asymmetrical shape of the throttle it causes different head-losses between up-and downsurging water levels. Several hydraulic model tests with a scale of 1:21 were carried out under different flow conditions to evaluate the head-losses. Due to the complex shape of the T-junction the model was milled out of a plastic cube with the help of CNC. Then, several CFD-simulations were conducted in order to evaluate under which circumstances the CFD-simulation is able to give reasonable results.
Year: 2009