3 papers
math.AP2021
Hydrostatic limit of the Navier-Stokes-alpha model
Léo Glangetas, Van-Sang Ngo, El Mehdi Said
In this paper we study the hydrostatic limit of the Navier-Stokes-alpha model in a very thin striped domain. We derive some Prandtl-type limit equations for this model and we prove…
math.AP2019
Approximate controllability of second grade fluids
Van-Sang Ngo, Geneviève Raugel
This paper deals with the controllability of the second grade fluids, a class of non-Newtonian of differentiel type, on a two-dimensional torus. Using the method of Agrachev-Sarych…
math.AP2018
On the influence of gravity on density-dependent incompressible periodic fluids
Van-Sang Ngo, Stefano Scrobogna
The present work is devoted to the analysis of density-dependent, incompressible fluids in a 3D torus, when the Froude number goes to zero. We consider the very gener…