@TechReport{ it:2011-012, author = {Jens Lindstr{\"o}m and Jan Nordstr{\"o}m}, title = {Stable {R}obin Boundary Conditions for the {N}avier-{S}tokes Equations}, institution = {Department of Information Technology, Uppsala University}, department = {Division of Scientific Computing}, year = {2011}, number = {2011-012}, month = apr, abstract = {In this paper we prove stability of Robin solid wall boundary conditions for the compressible Navier-Stokes equations. Applications include the no-slip boundary conditions with prescribed temperature or temperature gradient and the first order slip-flow boundary conditions. The formulation is uniform and the transitions between different boundary conditions are done by a change of parameters. We give different sharp energy estimates depending on the choice of parameters. The discretization is done using finite differences on Summation-By-Parts form with weak boundary conditions using the Simultaneous Approximation Term. We verify convergence by the method of manufactured solutions and show computations of flows ranging from no-slip to substantial slip.} }