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Young-Jin Sim (심영진)

I am a research fellow in the School of Mathematics at KIAS (Korean Institute for Advanced Study).

Contact information

Address: Room 1515, 85 Hoegiro, Dongdaemun-gu, Seoul 02455, Republic of Korea
Email: yjsim [at] kias.re.kr

Academic Interests

Analysis of partial differential equations from fluid dynamics
Coherent vortex structures in ideal fluids (existence, stability, interaction, streamline formation, etc)

Publications

(with K. Choi and I. -J. Jeong) On Existence of Sadovskii Vortex Patch: A Touching Pair of Symmetric Counter-Rotating Uniform Vortices. Ann. PDE 11, 18 (2025). journal, arXiv
Stability of oppositely-propagating pair of Hill's spherical vortices. Nonlinearity 39, 015013 (2026). journal, arXiv

Preprints

(with K. Abe, K. Choi, I. -J. Jeong, and K. Woo) Existence and stability of Sadovskii vortices: from patch to smooth vortices. arXiv
(with K. Choi and I. -J. Jeong) Vortex atmospheres of traveling vortices: rigorous definition, existence, and topological classification. arXiv

Educations

Ph.D. in Mathematical Sciences (Advisor: Kyudong Choi), UNIST, Aug. 2021- Feb. 2026
B.S. in Mathematical Sciences (major) & Management Engineering (minor), UNIST, Mar. 2017 - Aug. 2021

Curriculum Vitae

CV__Youngjin_Sim_ (1).pdf

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