High speed recordings of bubble and drop formation with vibration excitement

Researchers: Dr. J. Ellenberger
Prof. R. Krishna

Experimental

The inner diameter of the used nozzle is 0.9x10-3 m. All other details about the experimental setup - including pictures of the experimental equipment - can be found here.

About the movies on this page

The movies on this page have been recorded at high speed (2250 fps). Movies have been created at a frame rate of 25 fps. Hence, the movies are a factor 90 slower than real-time.

The previews shown below are just meant as a preview. To get a clear view of the bubble formation process, the viewer is encouraged to follow the links to the actual movies.

The movies are in Microsoft-Windows® audio-video-interleaved (.AVI) format.

Movies

System: Air-Water (surface tension 0.073 N/m)
Disperse phase: Air (viscosity 1.0x10-5 Pa.s, density 1.3 m3/s)
Continuous phase: Water (viscosity 1.7x10-3 Pa.s, density 998 m3/s)
Nozzle velocity: 0.490 m/s


Movie: 1.8 Mb
 No vibrations


Movie: 2.1 Mb
 Frequency: 100 Hz
Amplitude: 2x10-5 m


Movie: 2.3 Mb
 Frequency: 100 Hz
Amplitude: 1x10-4 m

System: Air-Water (surface tension 0.073 N/m)
Disperse phase: Air (viscosity 1.0x10-5 Pa.s, density 1.3 m3/s)
Continuous phase: Water (viscosity 1.7x10-3 Pa.s, density 998 m3/s)
Nozzle velocity: 1.135 m/s


Movie: 2.8 Mb
 No vibrations


Movie: 3.0 Mb
 Frequency: 100 Hz
Amplitude: 3.5x10-6 m


Movie: 3.0 Mb
 Frequency: 75 Hz
Amplitude: 1x10-5 m

System: ParaffinA-Water (surface tension 0.034 N/m)
Disperse phase: ParaffinA (viscosity 2.3x10-3 Pa.s, density 795 m3/s)
Continuous phase: Water (viscosity 1.7x10-3 Pa.s, density 998 m3/s)
Nozzle velocity: 0.225 m/s


Movie: 5.9 Mb
 No vibrations


Movie: 8.9 Mb
 Frequency: 70 Hz
Amplitude: 3.5x10-5 m


Movie: 2.0 Mb
 Frequency: 70 Hz
Amplitude: 6x10-5 m

Problems viewing this page? Contact the author.