7 papers
Nonuniqueness of the D Euler Evolutions with Vorticity
Thomas Y. Hou, Xiang Qin, Peicong Song +1
For each prescribed , we construct a compactly supported initial vorticity in that admits two distinct evolutions under the un…
A Sharp Uniqueness-Nonuniqueness Dichotomy for Neutral Vortex Arrays in D Euler Equations
Thomas Y. Hou, Xiang Qin, Peicong Song +1
We establish a sharp uniqueness--nonuniqueness criterion for the two-dimensional incompressible Euler equations within a class of stationary arrays of disjoint neutral vortices. Le…
On the Stability of Type II Blowup for the Keller-Segel System in High Dimensions
Thomas Y. Hou, Xiang Qin, Peicong Song +1
We study finite-time blowup for the parabolic--elliptic Keller--Segel system on in dimensions , where the problem is mass supercritical. For every integer $…
Exact Blowup Analysis for the Weak-Advection Hou--Li Model
Thomas Y. Hou, Xiang Qin, Xiuyuan Wang
We study self-similar singularity formation for the one-dimensional weak-advection Hou--Li model, a reduced model motivated by the axisymmetric Euler equations. In the periodic set…
Self-similar blow-up profile for the one-dimensional reduction of generalized SQG with infinite energy
Thomas Y. Hou, Xiang Qin, Yannick Sire +1
We study the singularity formation mechanisms of the inviscid generalized Surface Quasi-Geostrophic (gSQG) equation on the whole space and on the upper half-plane $\…
Forward Self-Similar Solutions to the 2D Hypodissipative Navier-Stokes Equations
Thomas Y. Hou, Peicong Song
We study the forward self-similar solutions to the D hypodissipative Navier-Stokes equation with fractional diffusion for . We first show that for arbi…
Nearly self-similar blowup of generalized axisymmetric Navier-Stokes equations
Thomas Y. Hou
We numerically investigate the nearly self-similar blowup of the generalized axisymmetric Navier--Stokes equations. First, we rigorously derive the axisymmetric Navier--Stokes equa…