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Akademický článek

Numerical investigation of acoustic cavitation and viscoelastic tissue deformation

Autor: Jaesung Park, Gihun Son

Publikováno v: Ultrasonics Sonochemistry, Vol 102, Iss , Pp 106757- (2024)

Acoustic cavitation and tissue deformation are studied by modifying a level-set method for compressible two-phase flows to consider viscoelastic tissue deformation. The numerical simulations performed using different shear moduli and bubble-tissue di

Externí odkaz: https://doaj.org/article/e55e1524c7fd481b9a76e942cbbf5ebe

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Akademický článek

Repeatable Acoustic Vaporization of Coated Perfluorocarbon Bubbles for Micro-Actuation Inspired by Polypodium aureum

Autor: Se-Yun Jeong, Han-Bok Seo, Myung-Hyun Seo, Jin-Woo Cho, Seho Kwon, Gihun Son, Seung-Yop Lee

Publikováno v: Biomimetics, Vol 9, Iss 2, p 106 (2024)

Polypodium aureum, a fern, possesses a specialized spore-releasing mechanism like a catapult induced by the quick expansion of vaporized bubbles. This study introduces lipid-coated perfluorocarbon droplets to enable repeatable vaporization–condensa

Externí odkaz: https://doaj.org/article/fedf21519f79422b98ac74891baab4b0

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Akademický článek

Numerical investigation of two-microbubble collapse and cell deformation in an ultrasonic field

Autor: Seongjin Hong, Gihun Son

Publikováno v: Ultrasonics Sonochemistry, Vol 92, Iss , Pp 106252- (2023)

Two-microbubble collapse near a spherical cell in an ultrasonic field is numerically analyzed by extending a level-set method for compressible multiphase flows with bubble and cell multiple interfaces. Computations performed with different bubble-bub

Externí odkaz: https://doaj.org/article/ab7511c47fb84fe99bee735bfef8ab58

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Akademický článek

Numerical modelling of acoustic cavitation threshold in water with non-condensable bubble nuclei

Autor: Seongjin Hong, Gihun Son

Publikováno v: Ultrasonics Sonochemistry, Vol 83, Iss , Pp 105932- (2022)

Numerical modelling of acoustic cavitation threshold in water is presented taking into account non-condensable bubble nuclei, which are composed of water vapor and non-condensable air. The cavitation bubble growth and collapse dynamics are modeled by

Externí odkaz: https://doaj.org/article/84b470e252f040bca6b959c4837aa57d

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Akademický článek

Numerical study of the effect of liquid compressibility on acoustic droplet vaporization

Autor: Sukwon Park, Gihun Son

Publikováno v: Ultrasonics Sonochemistry, Vol 79, Iss , Pp 105769- (2021)

In acoustic droplet vaporization (ADV), a cavitated bubble grows and collapses depending on the pressure amplitude of the acoustic pulse. During the bubble collapse, the surrounding liquid is compressed to high pressure, and liquid compressibility ca

Externí odkaz: https://doaj.org/article/70c281cff3234fa59f8f80a232f3500b

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Akademický článek

Numerical investigation of acoustic vaporization threshold of microdroplets

Autor: Sukwon Park, Gihun Son

Publikováno v: Ultrasonics Sonochemistry, Vol 71, Iss , Pp 105361- (2021)

A numerical model is presented for the acoustic vaporization threshold of a dodecafluoropentane (or perfluoropentane) microdroplet. The model is based on the Rayleigh-Plesset equation and is improved by properly treating the supercritical state that

Externí odkaz: https://doaj.org/article/92b589347e96495e8434d2837a82058e

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Akademický článek

Numerical Simulation of Bubble Growth in Liquid Jet Impingement on a Hot Plate

Autor: Kyungmin KIM, Gihun SON

Publikováno v: Journal of Thermal Science and Technology, Vol 7, Iss 1, Pp 237-248 (2012)

Complete numerical simulations are performed for bubble growth in water jet impingement on a hot plate. The governing equations for the conservation of mass, momentum and energy are numerically solved in the liquid, vapor and air phases. The liquid-v

Externí odkaz: https://doaj.org/article/d63ae3e32c2e4770ad70934fb37345ff

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