Accession Number : AD0717366

Title :   On the Flow Between Two Long Eccentric Cylinders.

Descriptive Note : Technical rept.,

Corporate Author : COLUMBIA UNIV NEW YORK LUBRICATION RESEARCH LAB

Personal Author(s) : Sood,Des R. ; Elrod,H. G.

Report Date : DEC 1970

Pagination or Media Count : 52

Abstract : The fluid inertia effects in the lubricating air film of high-speed tape transport systems have yet to be understood. To cope theoretically with the attendant problems, a computational procedure was developed to solve the Navier-Stokes equations of fluid motion for an incompressible fluid in a doubly-connected region. As a test case, the new procedure was applied to the flow in the annular region between two long eccentric cylinders, one of which is rotating. Excellent agreement is obtained with exact analytical results for the problem when inertia can be neglected. The numerical results are then extended to cover a wide range of operating parameters, with considerable assurance that the predictions so-obtained are accurate. (Author)

Descriptors :   (*FLUID FLOW, CYLINDRICAL BODIES), (*GAS BEARINGS, EQUATIONS OF MOTION), INCOMPRESSIBLE FLOW, INERTIA, NAVIER STOKES EQUATIONS, NUMERICAL ANALYSIS, LAMINAR FLOW, INPUT OUTPUT DEVICES, MAGNETIC TAPE

Subject Categories : Aerodynamics
      Computer Hardware
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE