Spiral Flows in Finite Rotating Annular Tubes

by Tin-Kan Hung, (M.ASCE), Assoc. Prof. of Bioengrg. and Civ. Engrg.; Carnegie-Mellon Univ., Pittsburgh, PA,

Serial Information: Journal of the Engineering Mechanics Division, 1973, Vol. 99, Issue 1, Pg. 13-29

Document Type: Journal Paper


Three-dimensional, time-dependent, axisymmetric flows of an incompressible Newtonian fluid in an annular tube as well as in a circular one were analyzed numerically. The flow was produced from rest by a pressure drop between the inlet and the outlet of a finite, annular (or circular) tube which was rotating around its axis. An implicit finite-difference scheme of the Navier-Stokes equations was developed to obtain the time variations of three velocity components and of the pressure as boundary conditions vary. Entrance effects on the velocity field, the pressure, and the Bernoulli-sum were analyzed.

Subject Headings: Rotational flow | Three-dimensional flow | Fluid flow | Navier-Stokes equations | Dynamic pressure | Three-dimensional analysis | Pressurized flow | Time dependence

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