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Velocity and pressure fluctuations induced by the precessing helical vortex in a conical diffuser
2014
IOP Conference Series: Earth and Environment
The flow unsteadiness generated in the draft tube cone of hydraulic turbines affects the turbine operation. Therefore, several swirling flow configurations are investigated using a swirling apparatus in order to explore the unsteady phenomena. The swirl apparatus has two parts: the swirl generator and the test section. The swirl generator includes two blade rows being designed such that the exit velocity profile resembles that of a turbine with fixed pitch. The test section includes a divergent
doi:10.1088/1755-1315/22/3/032009
fatcat:3ietgt4l7jabxh6nth26hen2ze