Accession Number:

AD0636102

Title:

ROTATING FLOWS OVER A ROTATING DISK FOR A CLASS OF NON-NEWTONIAN FLUIDS.

Descriptive Note:

Technical rept.

Corporate Author:

NAVAL WEAPONS LAB DAHLGREN VA

Personal Author(s):

Report Date:

1966-05-01

Pagination or Media Count:

28.0

Abstract:

Axisymmetric rotating flows over a rotating disk for Non-Newtonian fluids of Reiner-Rivlin type are calculated by means of an adjustable local boundary layer approximation. Variation of the dynamic similarity parameter, which characterizes the Non-Newtonian fluid, shows that secondary motions of stagnation, wake or cell type can exist. The beginning of instability in Bodewadt type motions, which indicates laminar flow separation from the surface of the disk, is shifted to higher Reynolds numbers for Non-Newtonian fluids. Furthermore, the largest tangential shear stress at the surface is exhibited by laminar flows of Newtonian fluids. Author

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE