Multimodal sensing of erosive cavitation phenomena

In this paper, we present a novel approach for the sensing of erosive cavitation phenomena in underwater facilities. Cavitation phenomena are known for their destructive capacity of underwater structures and are caused by the pressure decreasing followed by an implosion when the cavitation bubbles find an adverse pressure gradient. Conventional cavitation detection techniques are based on passive devices (pressure sensors or accelerometers) that just allows detection the cavitation but without assessing its erosive action. In order to go beyond these techniques that will remove this drawback, an alternative can be represented by the active techniques. Emissions of wide band signals in the flow during the apparition and development of cavitation embeds changes in the received signals. Signal processing methods, namely the Recurrence Quantification Analysis, are used to develop a robust metric that will estimate the effects of erosion.

[1]  Charles L. Webber,et al.  Recurrence Quantification Analysis , 2015 .

[2]  Charles L. Webber,et al.  Recurrence Quantification Analysis: Introduction and Historical Context , 2007, Int. J. Bifurc. Chaos.

[3]  Norbert Marwan,et al.  Recurrence plots 25 years later —Gaining confidence in dynamical transitions , 2013, 1306.0688.

[4]  William L. Rubin,et al.  Radar–Acoustic Detection of Aircraft Wake Vortices , 2000 .

[5]  J. Zbilut,et al.  2 Recurrence Quantification Analysis of Nonlinear Dynamical Systems , 2004 .

[6]  H. Kantz,et al.  Nonlinear time series analysis , 1997 .

[7]  Cornel Ioana,et al.  Detection of cavitation vortex in hydraulic turbines using acoustic techniques , 2014 .

[8]  Norbert Marwan,et al.  A historical review of recurrence plots , 2008, 1709.09971.

[9]  Cornel Ioana,et al.  Recent Advances in Non-stationary Signal Processing Based on the Concept of Recurrence Plot Analysis , 2014 .

[10]  J. Zbilut,et al.  Embeddings and delays as derived from quantification of recurrence plots , 1992 .

[11]  Cornel Ioana,et al.  On the vortex parameter estimation using wide band signals in active acoustic system , 2014, OCEANS 2014 - TAIPEI.

[12]  Jerome Mars,et al.  Time-Difference-of-Arrival Estimation Based on Cross Recurrence Plots, with Application to Underwater Acoustic Signals , 2016 .

[13]  C L Webber,et al.  Dynamical assessment of physiological systems and states using recurrence plot strategies. , 1994, Journal of applied physiology.