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20182025
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math.AP2025

Three-dimensional Supersonic flows for the steady Euler-Poisson system in divergent nozzles

Hyangdong Park

We are concerned with the unique existence of an axisymmetric supersonic solution with nonzero vorticity and nonzero angular momentum density for the steady Euler-Poisson system in…

math.AP2021

Three-dimensional supersonic flows of Euler-Poisson system for potential flow

Myoungjean Bae, Hyangdong Park

We prove the unique existence of supersonic solutions of the Euler- Poisson system for potential flow in a three-dimensional rectangular cylinder when prescribing the velocity and…

math.AP2019

Transonic shocks for 3-D axisymmetric compressible inviscid flows in cylinders

Hyangdong Park, Hyeongyu Ryu

We establish the existence of an axisymmetric weak solution to the steady Euler system with a transonic shock, nonzero vorticity, and nonzero swirl in a three-dimensional cylinder.…

math.AP2019

Contact discontinuities for 3-D axisymmetric inviscid compressible flows in infinitely long cylinders

Myoungjean Bae, Hyangdong Park

We prove the existence of a subsonic axisymmetric weak solution with to steady Euler system in a three-dimensional…

math.AP2018

Contact discontinuities for 2-D inviscid compressible flows in infinitely long nozzles

Myoungjean Bae, Hyangdong Park

We prove the existence of a subsonic weak solution to steady Euler system in a two-dimensional infinitely long nozzle when prescribing the value of the entropy $(…