On the Flow Between Two Long Eccentric Cylinders
On the Flow Between Two Long Eccentric Cylinders

Author: Des R. Sood

Publisher:

Published: 1970

Total Pages: 52

ISBN-13:

DOWNLOAD EBOOK

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).

Mathematical Modeling of Thread-annular Flow
Mathematical Modeling of Thread-annular Flow

Author:

Publisher:

Published: 2010

Total Pages: 100

ISBN-13:

DOWNLOAD EBOOK

The axial thread-annular flow between two cylinders, where the inner cylinder is in a slightly eccentric position and moving at a constant velocity, is studied. we are particularly interedted on the mathematical modeling of the thread injection by considering the incompressible and steady flow between eccentric cylinders. The mathematical modeling of this application is presented using non-dimensional Navier-stokes equations and the governing equation is solved analytically. a comparison between concentric basic flow, which is considered by Walton (2003), and eccentric basic flow is made. It is found taht there is difference between concentric and eccentric basic flows.