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2020 - PhD thesis.pdf (25.19 MB)

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Bioinspired Surfaces: Water Harvesting and Gas Bubbles Movement

Gurera, Dev
http://rave.ohiolink.edu/etdc/view?acc_num=osu1597776115985638

Abstract Details

2020, Doctor of Philosophy, Ohio State University, Mechanical Engineering.
Bioinspiration is an emerging field of study. It translates to the creation of products, devices, and processes by using materials and processes found in living nature. Economic impact of bioinspired materials and surfaces is significant, on the order of several hundred billion dollars per year worldwide. Along the same line, this PhD dissertation attempts on solving two problems using bioinspired solutions: 1) the water crisis and 2) gas bubbles movement. Fresh water sustains human life and is vital for human health. Water scarcity affects more than 40% of the global population and is projected to rise. Furthermore, various factors, including population growth and unsafe industrial practices, have put strain on “clean” water supply in many parts of the world, including the Americas. It is certain than the current supply of fresh water needs to be supplemented to meet future needs. Living nature provides many lessons for water source. It has evolved species, which can survive in the most arid regions of the world by water collection from fog and condensation in the night. Before the collected water evaporates, species have mechanisms to transport water for storage or consumption. In this dissertation, first, an overview of these mechanisms is presented. Then, based on these mechanisms, the work done on bioinspired water harvesters is presented. Based on the results, design and projections of water harvesting towers is also presented. Gas bubbles are of interest in natural and technological applications. These applications include biomedicine, food production, drag reduction, water treatment, oil removal and surface cleaning. On the contrary, gas bubbles may also have a deleterious effect. For example, the gas bubbles produced in oil could potentially cause corrosion of pipelines resulting in reduced equipment life and wasted resources. Therefore, the study of gas bubbles movement in terms of their formation, interaction with underlying surfaces, and their movement is important. It was found that movement of gas bubbles and water droplets are similar in a way. Therefore, in this dissertation, the previously learnt lessons from nature, were also used for the gas bubbles movement. The results from the bioinspired gas bubble movement are also discussed in this dissertation.
Bharat Bhushan (Advisor)
Carlos Castro (Committee Member)
Manoj Srinivasan (Committee Member)
269 p.
Mechanical Engineering
Bioinspiration; cactus; Laplace pressure gradient; desert; bubble; water; biomimetic

Recommended Citations

Citations

  • Gurera, D. (2020). Bioinspired Surfaces: Water Harvesting and Gas Bubbles Movement [Doctoral dissertation, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1597776115985638

    APA Style (7th edition)

  • Gurera, Dev. Bioinspired Surfaces: Water Harvesting and Gas Bubbles Movement. 2020. Ohio State University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1597776115985638.

    MLA Style (8th edition)

  • Gurera, Dev. "Bioinspired Surfaces: Water Harvesting and Gas Bubbles Movement." Doctoral dissertation, Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1597776115985638

    Chicago Manual of Style (17th edition)

osu1597776115985638
114
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This open access ETD is published by The Ohio State University and OhioLINK.