Open AccessFlow of water through fine clearances with relative motion of the boundaries
Publication year - 1933
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1933.0065
Subject(s) - brass , angular velocity , cylinder , rotation (mathematics) , mechanics , flow (mathematics) , rotational speed , grinding , materials science , physics , mechanical engineering , engineering , mathematics , classical mechanics , geometry , composite material , metallurgy , copper
In practice in many cases of flow through fine annular clearances, the inner boundary consists of a bush keyed to a rotating shaft, and in the investigation about to be described, it was found that up to a certain critical speed of rotation the resistance to flow is unaffected, but above this speed the resistance increases as the speed increases. Curves are given by means of which the critical angular velocity and the resistance at higher angular velocities can be ascertained for the range of clearances investigated. 2.Apparatus . Two apparatuses, Nos. I and II, were used, each consisting in principle of a brass cylinder mounted on a shaft and capable of rotating inside a hollow cylinder, also of brass. The surfaces were finished as smooth as possible by grinding.