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Cavitation Bubbles and Shockwaves in Microgravity

Cavitation Bubbles and Shockwaves in Microgravity. 57th International Astronautical Congress 2006, Valencia, Spain. D. Obreschkow, P. Kobel, N. Dorsaz, A. de Bosset, C. Nicollier, and M. Farhat. Cavitation & Erosion. Experimental Idea. Interaction with spherical free surface.

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Cavitation Bubbles and Shockwaves in Microgravity

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  1. Cavitation Bubbles and Shockwavesin Microgravity 57th International Astronautical Congress2006,Valencia, Spain D. Obreschkow, P. Kobel, N. Dorsaz, A. de Bosset,C. Nicollier, and M. Farhat

  2. Cavitation & Erosion

  3. Experimental Idea Interaction with spherical free surface Confined shockwave Cavitation Bubble Predicted liquid jets Water Drop

  4. Drop Formation & Fixation

  5. Drop-Electrodes Interaction Neutral Repulsion Attraction

  6. Drop Oscillations 1/e damp out time = 0.7s www.flashandsplash.ch

  7. around the drop …

  8. First Light

  9. Peculiar Jet Geometry Phys. Rev. Lett. 97, 094502 (2006)

  10. Surprising Lifecycle Equation of Motion: Phys. Rev. Lett. 97, 094502 (2006)

  11. Flashing Mist 0.0ms 0.08ms 0.16ms

  12. Single Microbubble

  13. Sockwave Simulation

  14. Simulation versus Observation

  15. Overview … "Injector tube" technique is useful Double-jet observations Counterjet Geometry Change Lifetime Shortening Shockwave focusing amplifies 2nd cavitation

  16. Cheers !

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