We study the low Mach number limit for the compressible Navier-Stokes system supplemented with Navier's boundary condition on an unbounded domain with compact boundary. Our main result asserts that the velocities converge pointwise to a solenoidal vector field - a weak solution of the incompressible Navier-Stokes system - while the fluid density becomes constant. The proof is based on a variant of local energy decay property for the underlying acoustic equation established by Kato.
机构:
Shanghai Normal Univ, Dept Math, Shanghai 200234, Peoples R China
Shanghai Normal Univ, Div Comp Sci, E Inst Shanghai Univ, Shanghai 200234, Peoples R ChinaShanghai Normal Univ, Dept Math, Shanghai 200234, Peoples R China