Seyoung Joung

I am a Postdoctoral researcher in mechanical engineering specializing in fluid mechanics and fluid-structure interactions. My research focuses on multi-physical phenomena found in nature involving deformations of soft material through elasto-hydrodynamic instability. I have extensive experiences with structural analysis on flow-induced deformations based on flow visualization, low-order numerical calculations, and theoretical modelling that incorporates the complex dynamics of fluid and solid. Leveraging the expertise, I intend to design innovative morphing mechanisms based on pattern control of compliant structures targeted for untethered soft actuators working in fluidic environments.

Contact: seyuong2011 [at] kaist [dot] ac [dot] kr // seyuong2011 [at] gmail [dot] com

My research interests in the field of fluid mechanics include

Fluid structure interaction
Elasto-hydrodynamic instability
Pattern control
Wrinkling dynamics
Soft material

Education

Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea (Mar. 2020 ~ Aug. 2025)

Ph.D., Dept. of Mechanical Engineering (ME), Advisor: Prof. Daegyoum Kim

Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea (Mar. 2018 ~ Feb. 2020)

M.S., Dept. of Mechanical Engineering (ME), Advisor: Prof. Daegyoum Kim

Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea (Feb. 2013 ~ Feb. 2017)

B.S., Major: Dept. of Mechanical Engineering (ME), Minor: Dept. of Physics

Publications

Joung, S., Jung, C., and Kim, D. 2026 “Hydrodynamic wrinkling of an elastic loop in transient radial flow” Journal of Fluid and Mechanics, (accepted)
Jung, C., JT, Zhang., Joung, S., and Kim, D. 2025 “Hydrodynamic flutter and free-surface breakup of a retracting elastic sheet” Proceedings of the National Academy of Sciences, 122, 46
Joung, S., Song, M. and Kim, D. 2020 “Synthetic capsule break-up in simple shear flow” Physics of Fluids, 32, 113603 (Editor’s pick article)
Lee, S., Joung, S., and Kim, D. 2022 “Dynamics of a droplet-impact-driven cantilever making contact with the ground” Physics of Fluids, 34, 042125
Joung, S., Lee, HK., and Kim, D. 2020 "Viscosity-Enhanced Fluid Drift around Hairy Structures" Fluids, 5, 5
Kim, DJ., Jeong, S., Park, T., and Kim, D. 2019 "Impinging sweeping jet and convective heat transfer on curved surfaces" International Journal of Heat and Fluid Flow, 79, 108458

Conferences

Jeong, S. and Kim, D. 2019 “Break-up of synthetic capsule in shear flow” 72nd Annual Meeting of the APS Division of Fluid Dynamics, Seattle, Washington
Joung, S., Jang, C., and Kim, D. 2023 "Wrinkle patterns of an elastic loop coupled with a transient gap flow" 76th Annual Meeting of the APS Division of Fluid Dynamics, Washington, DC
Joung, S. and Kim, D. 2023 "Wrinkling of an elastic loop in an expanding gap" 6th symposium on fluid-structure-sound interactions and control, Busan, South Korea
Joung, S., Jang, C., Jung, C., and Kim, D. 2024 "Wrinkle patterns of an elastic loop induced by hydrodynamic pressure" The 26th International Congress of Theoretical and Applied Mechanics, Daegu, South Korea
Joung, S., Jang, C., Jung, C., and Kim, D. 2024 "Hydrodynamic wrinkling induced by gap flow" 1st European Fluid Dynamics Conference, Aachen, Germany
Joung, S., and Kim, D. 2025 “Hydrodynamic resonance of an elastic loop in an oscillatory gap-flow” The 18th Asian Congress of Fluid Mechanics, Seoul, Korea
Jeong, S. and Kim, D. 2019 "Synthetic capsule break-up in shear flow" Proceedings of the KSME Fluid Engineering Division 2019 Spring Conference, Gangneung, South Korea
Joung, S. and Kim, D. 2023 "Deformation of an elastic loop induced by gap flow between moving walls" 2023 KSV Spring Meeting, Seoul, South Korea
Joung, S. and Kim, D. 2023 "Flow-induced deformation of an elastic loop by expanding gap flow between walls" KSME Fluid Engineering Division 2023 Spring Meeting, Seoul, South Korea
Joung, S. and Kim, D. 2024 "Frequency response of wrinkling elastic loop under oscillatory hydrodynamic pressure" KSME Annual Meeting 2024, Jeju, South Korea

Activities

Teaching / Mentoring Activities

Daejeon Science High School for the Gifted, Daejeon, Republic of Korea

Research & Education - (2019)
Advanced Independent study - (2025)

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