par Dehaeck, Sam 
;Talvy, Samuel Lucien ;Rednikov, Alexei ;Queeckers, Patrick ;Colinet, Pierre
Référence APS-DFD 63rd Annual Meeting(21-23 November 2010: California), APS-DFD 2010
Publication Publié, 2010-11-21
;Talvy, Samuel Lucien ;Rednikov, Alexei ;Queeckers, Patrick ;Colinet, Pierre Référence APS-DFD 63rd Annual Meeting(21-23 November 2010: California), APS-DFD 2010
Publication Publié, 2010-11-21
Abstract de conférence
| Résumé : | The BAMBI (Bifurcation Anomalies in Marangoni-Bénard ́Instabilities) experiment has been successfully flown onboard the FOTON-M2 satellite in June 2005. During the 4 days available for the experiment, a 5mm-thick 200 cSt silicone oil layer in a 10x10cm^2 wide container,and in contact with a similarly-sized helium gas layer was heated from below and cooled from above. By varying the heating power applied at each experimental step, a range of temperature differences across the liquid and gas layers was scanned and the onset and evolution of the Marangoni-Bénard instability typical for this type of configuration was examined. The used optical diagnostics were Infrared Thermography of the liquid/gas interface, PTV (multiple views and heights in the liquid layer), Wollaston Interferometry and Electronic Speckle Pattern Interferometry. The present contribution focuses on the velocity results obtained by PTV in the interface plane, and discusses them in relation both with infrared images, and with theory/numerics. |
