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Experimental System Effects on Interfacial Shape and Included Volume in Bubble Growth Studies

Wickizer, Gabriel Benjamin
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337716075

Abstract Details

2012, MS, University of Cincinnati, Engineering and Applied Science: Mechanical Engineering.
Measurements in experimental studies of adiabatic single bubble growth dynamics bear the combined effects of both the testing parameters and the test system features. The present study investigates the impact of specific experimental methods and system features, namely gas flow path, system volume, orifice construction, and visualization surface, on the measurement of adiabatic single-bubble growth dynamics at the tip of submerged capillary orifices. The present work jointly focuses on characterization of bubble volume and shape during nucleation and growth. Photos of bubble growth from a 1.75 mm capillary tube orifice were taken for glycerin, water, and 75 wt% aqueous glycerin for system volumes from 0.2 – 301.5 mL over a range of flow rates from 0.01 – 1.6 mL/s, photographed through both planar and curved surfaces. Interfacial aspect ratio and included volume from each system modification were analyzed to determine the effect of system volume and to understand the impact of flow metering on the constant gas flow boundary values in water and aqueous glycerin as well as the influence of curvature in the visualization surface and the effects of liquid viscosity in the presence of these system features. It was found that interfacial aspect ratio decreases with increasing system volume and with decreasing viscosity over the full range of flow rates considered. Additionally, interfacial aspect ratio decreases when a cylindrical visualization surface is used, owing in part to horizontal magnification. Furthermore, it is observed that bubble shape must be treated distinctly from bubble volume when surface curvature is present or system volume is minimized.
Raj Manglik, PhD (Committee Chair)
Jude Iroh, PhD (Committee Member)
Milind Jog, PhD (Committee Member)
131 p.
Mechanical Engineering
experimental fluid dynamics; adiabatic single bubble; nucleation and necking; capillary flows; interfacial profile and aspect ratio; flow visualization;

Recommended Citations

Citations

  • Wickizer, G. B. (2012). Experimental System Effects on Interfacial Shape and Included Volume in Bubble Growth Studies [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337716075

    APA Style (7th edition)

  • Wickizer, Gabriel Benjamin. Experimental System Effects on Interfacial Shape and Included Volume in Bubble Growth Studies. 2012. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337716075.

    MLA Style (8th edition)

  • Wickizer, Gabriel Benjamin. "Experimental System Effects on Interfacial Shape and Included Volume in Bubble Growth Studies." Master's thesis, University of Cincinnati, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337716075

    Chicago Manual of Style (17th edition)

ucin1337716075
582
© 2012, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.