Comptes Rendus
no. 7
Automatic dynamic mask extraction for PIV images containing an unsteady interface, bubbles, and a moving structure
David Dussol1 ; Philippe Druault1  ; Bachar Mallat2 ; Sylvain Delacroix2 ; Grégory Germain2
1 Sorbonne Universités, UPMC Université Paris-6, CNRS, UMR 7190, Institut Jean-Le-Rond-d'Alembert, 75005 Paris, France
2 IFREMER, Marine Structures Laboratory, 150 quai Gambetta, 62321 Boulogne-sur-Mer, France
Comptes Rendus. Mécanique, Volume 344 (2016) no. 7, pp. 464-478.

When performing Particle Image Velocimetry (PIV) measurements in complex fluid flows with moving interfaces and a two-phase flow, it is necessary to develop a mask to remove non-physical measurements. This is the case when studying, for example, the complex bubble sweep-down phenomenon observed in oceanographic research vessels. Indeed, in such a configuration, the presence of an unsteady free surface, of a solid–liquid interface and of bubbles in the PIV frame, leads to generate numerous laser reflections and therefore spurious velocity vectors. In this note, an image masking process is developed to successively identify the boundaries of the ship and the free surface interface. As the presence of the solid hull surface induces laser reflections, the hull edge contours are simply detected in the first PIV frame and dynamically estimated for consecutive ones. As for the unsteady surface determination, a specific process is implemented like the following: i) the edge detection of the gradient magnitude in the PIV frame, ii) the extraction of the particles by filtering high-intensity large areas related to the bubbles and/or hull reflections, iii) the extraction of the rough region containing these particles and their reflections, iv) the removal of these reflections. The unsteady surface is finally obtained with a fifth-order polynomial interpolation. The resulted free surface is successfully validated from the Fourier analysis and by visualizing selected PIV images containing numerous spurious high intensity areas. This paper demonstrates how this data analysis process leads to PIV images database without reflections and an automatic detection of both the free surface and the rigid body. An application of this new mask is finally detailed, allowing a preliminary analysis of the hydrodynamic flow.

Reçu le :
Accepté le :
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DOI : 10.1016/j.crme.2016.03.005
Mots clés : Particle image velocimetry, Unsteady free interface, Edge detection method, Morphological analysis
David Dussol 1 ; Philippe Druault 1 ; Bachar Mallat 2 ; Sylvain Delacroix 2 ; Grégory Germain 2

1 Sorbonne Universités, UPMC Université Paris-6, CNRS, UMR 7190, Institut Jean-Le-Rond-d'Alembert, 75005 Paris, France
2 IFREMER, Marine Structures Laboratory, 150 quai Gambetta, 62321 Boulogne-sur-Mer, France 
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     title = {Automatic dynamic mask extraction for {PIV} images containing an unsteady interface, bubbles, and a moving structure},
     journal = {Comptes Rendus. M\'ecanique},
     pages = {464--478},
     publisher = {Elsevier},
     volume = {344},
     number = {7},
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David Dussol; Philippe Druault; Bachar Mallat; Sylvain Delacroix; Grégory Germain. Automatic dynamic mask extraction for PIV images containing an unsteady interface, bubbles, and a moving structure. Comptes Rendus. Mécanique, Volume 344 (2016) no. 7, pp. 464-478. doi : 10.1016/j.crme.2016.03.005. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2016.03.005/

[1] G. Deane; D. Stokes Scale dependence of bubble creation mechanisms in breaking waves, Nature, Volume 418 (2002), pp. 839-844

[2] S. Delacroix Caractérisation de la génération et de la propagation de bulles autour de la caréne des navires scientifiques, Université de Bretagne occidentale, 2014 (Ph.D. thesis)

[3] S. Delacroix; G. Germain; J. Billard; B. Gaurier; J. Facq; T. Bacchetti Experimental study of bubbles sweep-down occurrence on oceanographic research vessels, San Francisco, CA, USA (2014)

[4] S. Delacroix; G. Germain; L. Berger; J. Billard Bubbles sweep-down occurrence characterization on research vessels, Ocean Eng. (2016), pp. 34-42

[5] P. Druault; E. Bouhoubeiny; G. Germain POD investigation of the unsteady turbulent boundary layer developing over porous moving flexible fishing net structure, Exp. Fluids, Volume 53 (2012) no. 1, pp. 277-292

[6] W. Melville; F. Veron; C. White The velocity field under breaking waves: coherent structures and turbulence, J. Fluid Mech., Volume 454 (2002), pp. 203-233

[7] J. Canny A computational approach to edge detection, IEEE Trans. Pattern Anal. Mach. Intell., Volume PAMI-8 (1986), pp. 679-698

[8] Z. Huang; S. Hsiao; H. Hwung Observation of coherent turbulent structure under breaking waves, Int. J. Offshore Polar Eng., Volume 19 (2009) no. 1, pp. 15-22

[9] M. André; P. Bardet Velocity field, surface profile and curvature resolution of steep and short free-surface waves, Exp. Fluids, Volume 55 (2014) no. 1709, pp. 1-19

[10] R. Theunissen; F. Scarano; M. Riethmuller On improvement of PIV images interrogation near stationary interfaces, Exp. Fluids, Volume 45 (2008), pp. 557-572

[11] Y. Jeon; H. Sung Piv measurement of flow around an arbitrarily moving body, Exp. Fluids, Volume 50 (2011), pp. 787-798

[12] J. Park; S. Im; H. Sung; J. Park Piv measurements of flow around an arbitrarily moving free surface, Exp. Fluids, Volume 56 (2015), pp. 1-16

[13] A. Sanchis; A. Jensen Dynamic masking of PIV images using the radon transform in free surface flows, Exp. Fluids, Volume 51 (2011), pp. 871-880

[14] A. Ayati; J. Kolass; A. Jensen; G. Johnson A PIV investigation of stratified gas–liquid flow in a horizontal pipe, Int. J. Multiph. Flow (2014), pp. 129-143

[15] G. Gomit; L. Chatellier; D. Calluaud; L. David Free surface measurement by stereo-refraction, Exp. Fluids, Volume 54 (2013) no. 6, pp. 1540-1550

[16] S. Delacroix; G. Germain; J. Billard; B. Gaurier; J. Facq Étude expérimentale du phénomène d'entraînement de bulles à l'étrave des navires scientifiques, 14es Journées de l'hydrodynamique, Val-de-Reuil, France, 18–20 November, 2014

[17] Y. Cheng; S. Pothos; F. Diez Phase discrimination method for simultaneous two-phase separation in time-resolved stereo PIV measurements, Exp. Fluids, Volume 49 (2010), pp. 1375-1391

[18] E. Bouhoubeiny; G. Germain; P. Druault Time-resolved PIV investigations of the flow field around rigid cod-end net structure, Fish. Res., Volume 108 (2011) no. 2–3, pp. 344-355

[19] B. Gaurier; P. Davies; A. Deuff; G. Germain Flume tank characterization of marine current turbine blade behaviour under current and wave loading, Renew. Energy, Volume 59 (2013), pp. 1-12

[20] S. Delacroix, G. Germain, B. Gaurier, J. Billard, Experimental study of bubble sweep-down in wave and current circulating tank. Part I: Experimental set-up and observed phenomena, Ocean Eng. (in revision).

[21] J.D. Kat; J. Paulling Prediction of extreme motions and capsizing of ships and offshore vehicles, OMAE Conference, 20th Int. Conf. Offshore Mech. and Arctic Eng. No. OMAE2001/OFT-1280, 2001

[22] J. Prewitt Object Enhancement and Extraction, Academic Press, New York, 1970

[23] F. Guo; Y. Yang; B. Chen; L. Guo A novel multi-scale edge detection technique based on wavelet analysis with application in multiphase flows, Powder Technol., Volume 202 (2010), pp. 171-177

[24] N. Deen; P. Willems; M.V.S. Annaland; J. Kuipers; R. Lammertink; A. Kemperman; M. Wessling; W.V.D. Meer On image pre-processing for PIV of single- and two-phase flows over reflecting objects, Exp. Fluids, Volume 49 (2010), pp. 525-530

[25] D. Dussol Étude de l'écoulement autour de l'étrave des navires océanographiques, Université Pierre-et-Marie-Curie, Paris-6, 2015 (in French), Master's thesis

[26] E. Bouhoubeiny; P. Druault; G. Germain Phase-averaged mean properties of turbulent flow developing around a fluttering sheet of net, Ocean Eng., Volume 82 (2014), pp. 160-168

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