.... The experimental investigations presented in this paper are concerned with pressure measurements at the wall of the conical diffuser. The pressure fluctuations’ Fourier spectra are analyzed in order to assess how the amplitude and dominating frequency are modified by the water injection. It is shown that the water...

... and the amplitudes of pressure fluctuations at the investigated frequencies were much larger than ones at the design flow rate. The aggregation of time-frequency characteristic was greatly affected by both the operating condition and the measurement location. An experimental investigation was carried out...