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Motion of bubbles and bubble-droplets in an immiscible liquid

Bewegungen von Blasen und Blasen-Tropfen in nichtmischbarer Flüssigkeit

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Abstract

A method is presented by which the movement of bubbles is recorded using still photography. Data can be obtained such as path, velocity, indications of surface instabilities, variation of size like growth and collapse.

Results are presented for rising small and medium size air bubbles, spherical cap-shape butane bubbles, evaporating butane droplets and condensing butane bubbles in distilled water.

Zusammenfassung

Es wird eine Methode zur Wiedergabe der Blasenbewegung unter Benutzung der Standphotographie mitgeteilt. Man erhält damit Informationen über den Weg, die Geschwindigkeit, Anzeichen von Instabilitäten der Oberfläche und eine Änderung der Größe wie durch Wachstum und Zusammenbruch.

Ergebnisse werden für den Aufstieg kleiner und mittlerer Luftblasen, kugeliger hutförmiger Butanblasen, verdampfender Butantropfen und kondensierender Butanblasen in destilliertem Wasser mitgeteilt.

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Abbreviations

ATMP:

Atmospheric pressure (mm Hg)

f:

Number of bubbles per second

H:

Water head above the nozzle tip (mm)

Tn :

Temperature in the nozzle (°C)

Ts :

Butane saturation temperature at the nozzle tip (°C)

Tw :

Water temperature (°C)

U:

Rise velocity (mm/s)

Z:

Height above the nozzle tip (mm)

ΔT:

Temperature difference

t:

Time between every consecutive shot(s)

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Authors and Affiliations

  1. Mechanical Engineering Department, Imperial College of Science and Technology, SW7 2BX, London, England

    M. R. Mokhtarzadeh M.Sc, D.I.C. & A. A. El-Shirbini M.Sc., D.I.C., Ph.D., M.I. Mech. E., C. Eng.

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  1. M. R. Mokhtarzadeh M.Sc, D.I.C.
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  2. A. A. El-Shirbini M.Sc., D.I.C., Ph.D., M.I. Mech. E., C. Eng.
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Mokhtarzadeh, M.R., El-Shirbini, A.A. Motion of bubbles and bubble-droplets in an immiscible liquid. Wärme- und Stoffübertragung 12, 25–33 (1979). https://doi.org/10.1007/BF01672438

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  • DOI: https://doi.org/10.1007/BF01672438

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