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RESEARCH PAPERS

Frictional Resistance of Enclosed Rotating Cones With Superposed Throughflow

[+] Author and Article Information
Y. Yamada, M. Ito

Department of Mechanical Engineering, Nagoya Institute of Technology, Showa-ku, Nagoya, Japan

J. Fluids Eng 101(2), 259-264 (Jun 01, 1979) (6 pages) doi:10.1115/1.3448948 History: Received May 22, 1978; Online October 12, 2010

Abstract

The research summarized in this paper is an experimental study of the frictional moment on a cone rotating in a conical casing with an outward throughflow. The cone vertex angles tested in the present experiment are θ = 30, 60 and 90 deg. In the region where the frictional moment on the rotating cone with no throughflow is increased by the effect of Taylor-type vortices, an increase of the throughflow rate results in a decrease of the frictional moment, if the throughflow rate is not so large. In the region where the Taylor-type vortices have no appreciable effect on the frictional moment, on the other hand, the rate of increase in CM with increasing Cq. sin (θ/2) is almost independent of θ, where CM and Cq denote the moment coefficient and the dimensionless throughflow rate, respectively.

Copyright © 1979 by ASME
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