I have a high speed rotating shaft (~30,000 rpm). Outside the shaft I have a relatively stagnant volume of fluid surrounded by a non-rotating cylinder (housing). I am looking to find a 'simple' laminar flow model to describe the pressure of the fluid fat any point radially from the OD of the rotating shaft to the ID of the non-rotating housing wall. I have researched online and found many references to Taylor vortices and the like, but this is too high-level. Thank you in advance.