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Pressure barrier of water using superhydrophobic surface and its application for a pressure relief valve

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Abstract
In fluid systems, pressure relief devices are essential and there are various types of mechanical pressure relief devices. However, this mechanical pressure relief device involves inevitable problems such as corrosion and moving errors. in this research, by using varies types of hole on superhydrophobic surfaces that was fabricated with silica nanoparticles and PDMS, effects of pressure barrier and releasing behavior under hydraulic pressure were described. the pressure barrier induced by unique wetting mode on hydrophobic/superhydrophobic surfaces and the infiltration pressure is according to classical Young-Laplace equation. by using single hole, multiple holes and porous medium, an effect of number of holes to the pressure barrier was identified. Furthermore, through the computational fluid dynamics (CFD) simulations, the infiltration pressure verification and pressure releasing behavior on the pressure barrier were analyzed. the results can be applied to the novel type of pressure relief device using the pressure barrier.
Author(s)
김은식
Issued Date
2021
Awarded Date
2021-02
Type
Dissertation
Keyword
Superhydrophobic surfacePressure barrierCapillarityPressure relief valve
URI
https://oak.ulsan.ac.kr/handle/2021.oak/5678
http://ulsan.dcollection.net/common/orgView/200000373584
Alternative Author(s)
Eunsik Kim
Affiliation
울산대학교
Department
일반대학원 기계자동차공학과
Advisor
천두만
Degree
Master
Publisher
울산대학교 일반대학원 기계자동차공학과
Language
eng
Appears in Collections:
Mechanical & Automotive Engineering > 1. Theses (Master)
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