“Analysis of the propeller wake evolution by pressure and velocity phase measurements”

By Mario Felli, Fabio Di Felice, G. Guj, R. Camussi. 2006

133 citations recorded by the source corpus.

In the present study an experimental analysis of the velocity and pressure fields behind a marine propeller, in non-cavitating regime is reported. Particle image velocimetry measurements were performed in phase with the propeller angle, to investigate the evolution of the axial and the radial velocity components, from the blade trailing edge up to two diameters downstream. In phase pressure measurements were performed at four radial and eight longitudinal positions downstream the propeller model at different advance ratios. Pressure data, processed by using slotting techniques, allowed reconstructing the evolution of the pressure field in phase with the reference blade position. In addition, the correlation of the velocity and pressure signals was performed. The analysis demonstrated that, within the near wake, the tip vortices passage is the most important contribution in generating the pressure field in the propeller flow. The incoming vortex breakdown process causes a strong deformation of the hub vortex far downstream of the slipstream contraction. This process contributes to the pressure generation at the shaft rate frequency.

Subfields: Aerospace Engineering, Mechanical Engineering, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/8ffeb6e356d7bf0f9381bec6dd5c7dc5269c6b1d

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In Aerospace Engineering

In Mechanical Engineering

In Mechanics of Materials

Citations in the corpus

Mechanisms of evolution of the propeller wake in the transition and far fields (2011, methodology): “Pressure measurements (Felli et al. 2006) and flow visualizations (Stella et al. 2000) support this thesis, which revealing dependence of some typical features of the wake instability (e.g. phase shift of the tip vortex, blade-to-shaft harmonic energy transfer, destabilization of the hub vortex,…”
Large eddy simulation of propeller wake instabilities (2017, methodology): “Di Felice et al. (2004) and Felli et al. (2006) explained that the interaction between the tip vortex and the trailing wake of the adjacent blade in the same transverse plane cause the tip vortex to break apart from its trailing edge blade wake.”
On the wake dynamics of a propeller operating in drift (2014, background): “This experimental investigation of the flow in terms of velocity, pressure and turbulent kinetic energy (Felli et al. 2006, 2008) highlighted the different evolution of the tip and blade vorticity.”