2018/12/17 by Chen, Gui-Qiang G., Li, Siran, Qian, Zhongmin
#35Q30 #35Q31 #35Q35 #76D03 #76D05 #76D09 #Analysis of PDEs (math.AP) #Chaotic Dynamics (nlin.CD) #FOS: Mathematics #FOS: Physical sciences #Mathematical Physics (math-ph)
paper · doi:10.48550/arxiv.1812.06565
We are concerned with the inviscid limit of the Navier-Stokes equations on bounded regular domains in ℝ3 with the kinematic and Navier boundary conditions. We first establish the existence and uniqueness of strong solutions in the class C([0,T_⋆); Hr(Ω; ℝ3)) ∩ C1([0,T_⋆); Hr-2(Ω;ℝ3)) with some T_⋆>0 for the initial-boundary value problem with the kinematic and Navier boundary conditions on ∂ Ω and divergence-free initial data in the Sobolev space Hr(Ω; ℝ3) for r≥ 2. Then, for the strong solution with Hr+1--regularity in the spatial variables, we establish the inviscid limit in Hr(Ω; ℝ3) uniformly on [0,T_⋆) for r > (5)/(2). This shows that the boundary layers do not develop up to the highest order Sobolev norm in Hr(Ω;ℝ3) in the inviscid limit. Furthermore, we present an intrinsic geometric proof for the failure of the strong inviscid limit under a non-Navier slip-type boundary condition.