Flow Through Annulus with Large Radial Clearance

by M. H. Abdul Khader, Asst. Prof.; Hydr. Engrg. Lab., Indian Inst. of Tech., Madras, India,
H. Suresh Rao, Lect.; Hydr. Engrg. Lab., Indian Inst. of Tech., Madras, India,

Serial Information: Journal of the Hydraulics Division, 1974, Vol. 100, Issue 1, Pg. 25-39

Document Type: Journal Paper

Errata: (See full record)


This investigation deals with a theoretical analysis of the characteristics of a fully developed turbulent helical flow in a concentric annulus, and an experimental program to verify the theoretical results. The results of the theoretical investigation include axial and tangential velocity distributions and the axial friction factors, with the inner cylinder of the annulus rotating at a constant speed. The theoretical results agree closely with the experimental ones. The variation of axial resistance of helical flow is shown to depend on the speed ratio for a given geometry.

Subject Headings: Radial flow | Radiation | Velocity distribution | Flow resistance | Turbulent flow | Cylinders | Rotation | Verification | Load and resistance factor design | Friction

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