2024/03/25 by Lili Du, Yang Pu, Du, Lili +3
Chemical Engineering · Computer Science · Engineering · #Advanced Mathematical Modeling in Engineering #Analysis of PDEs (math.AP) #Elasticity and Wave Propagation #FOS: Mathematics #Rheology and Fluid Dynamics Studies
paper · pdf · doi:10.48550/arxiv.2403.16601
openalex publication_date 2024/03/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This article is devoted to investigate the singular profile of the free boundary of two-dimensional incompressible inviscid fluid with external force near the stagnation point. More precisely, given an external force with some polynomial type decay close to the stagnation point, the singular profile of the free boundary at stagnation point possible are corner wave, flat and cusp singularity. Through excluding the cusp and flat singularity, we know the only singular profile is corner wave singularity, and the corner depends on the decay rate of the solution near the stagnation point. The analysis depends on the geometric method to a class of Bernoulli-type free boundary problem with given degenerate gradient function on free boundary. This work is motivated by the significant work [E. V\brevearv\brevearuc\brevea and G. Weiss, Acta Math, 206, 363-403, (2011)] on Stokes conjecture to the incompressible inviscid fluid acted on by gravity.