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Study of Liquid Drop Migration on Fibers and Mats due to Liquid Flow in a Thin Slit Geometry

Fang, Jia
http://rave.ohiolink.edu/etdc/view?acc_num=akron1446730097

Abstract Details

2015, Doctor of Philosophy, University of Akron, Chemical Engineering.
ABSTRACT The movement of liquid drops on fibers and mats commonly occurs in fabrics used in household and commercial applications. Removal of the liquid droplets from the gas/liquid and liquid/liquid streams will be of benefit for the health of the workers, safety of the environment, and protection of equipment. For example, the presence of water in diesel fuel may lead to some problems such as plugging of fuel injectors, reduce fuel flow rate, reduce fuel lubricity, and cause corrosion of engine parts. It is better to design a self-cleaning filter, which could be used to collect the liquid droplets and drain to a collecting device. This filter has advantages of reducing the cleaning cost and extending the filter life. The quality factor is used to evaluate the performance of the filter, which is related to the separation efficiency and pressure drop. The separation efficiency is strongly related to the velocity of drops on the fibers and mats. The drag coefficient correlation is used to estimate the average velocity of drop moving on the fiber/mat surfaces. In this work, the drag coefficient is correlated to Reynolds and capillary numbers from experiments and models. The flow direction is parallel the fibers and mats. In the gas-liquid experiment, the experiments are conducted for different types of fibers and different liquids. In the liquid-liquid experiment, the experiments are conducted for water drop moving on different types of mat surfaces. Also, other correlations have been derived to estimate the minimum gas/liquid flow Reynolds numbers to initiate the drop movement on fiber and mat surfaces. Finally, when the flow direction is through the filter medium (perpendicular to the fiber mat surface), another correlation is derived to estimate the minimum flow rate to move the water droplets through the pores of the mats. These correlations are unique to determine the average velocities of the liquid drops on fiber/mat surfaces. The motion of drops on fibers and woven mats are not widely discussed in literature. Very few papers have been published on the development of such correlations to estimate the drop migration on fibers/mats which makes this work unique.
Chase George (Advisor)
Chemical Engineering
filter media, coalescence, wettability, drag coefficient, drag force, drop motion

Recommended Citations

Citations

  • Fang, J. (2015). Study of Liquid Drop Migration on Fibers and Mats due to Liquid Flow in a Thin Slit Geometry [Doctoral dissertation, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1446730097

    APA Style (7th edition)

  • Fang, Jia. Study of Liquid Drop Migration on Fibers and Mats due to Liquid Flow in a Thin Slit Geometry. 2015. University of Akron, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1446730097.

    MLA Style (8th edition)

  • Fang, Jia. "Study of Liquid Drop Migration on Fibers and Mats due to Liquid Flow in a Thin Slit Geometry." Doctoral dissertation, University of Akron, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1446730097

    Chicago Manual of Style (17th edition)

akron1446730097
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© , some rights reserved.Creative Commons License Study of Liquid Drop Migration on Fibers and Mats due to Liquid Flow in a Thin Slit Geometry by Jia Fang is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. Based on a work at etd.ohiolink.edu.
This open access ETD is published by University of Akron and OhioLINK.