@TechReport{	  it:2005-031,
  author	= {Jan Nordstr{\"o}m and R.C. Swanson},
  title		= {Boundary Conditions for a Divergence Free
		  Velocity-Pressure Formulation of the Incompressible
		  {N}avier-{S}tokes Equations},
  institution	= {Department of Information Technology, Uppsala University},
  department	= {Division of Scientific Computing},
  year		= {2005},
  number	= {2005-031},
  month		= nov,
  day		= {9},
  abstract	= {New sets of boundary conditions for the velocity-pressure
		  formulation of the incompressible Navier-Stokes equations
		  are derived. The boundary conditions have the same form on
		  both inflow and outflow boundaries and lead to a divergence
		  free solution.}
}