Creeping flow of Newtonian fluids in curved rectangular channels

✍ Scribed by Rieger, F. ;Šesták, J.

• Publisher: Springer
• Year: 1973
• Tongue: English
• Weight: 650 KB
• Volume: 28
• Category: Article
• ISSN: 0003-6994
• DOI: 10.1007/bf00413059

✦ Synopsis

The object of this paper is to present accurate numerical data concerning the creeping flow in curved annular channels with rectangular cross sections of which the outer wall is rotating with constant angular velocity. Dimensionless expressions for velocity profiles, flow rates and friction factors are obtained analytically for both the "drag" and "pressure" flow contributions. Numerical data were obtained on a digital computer and are presented in tabular and graphical form. The results of the theoretical analysis are also expressed in terms of the flow rate correction factors widely used in calculating the pumping efficiency of screw-pumps, agitators and extruders. This enables to estimate the etfect öf flight curvature on the pumping capacity.