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Analysis of internal flow characteristics of a smooth-disk water-brake dynamometerThe principal of absorbing power with an enclosed partially submerged rotating disk through the turbulent viscous shearing of water is discussed. Reference information is used to develop a flow model of the water brake. A method is then presented that uses vector diagrams to relate the effects of rotational flow, through flow, and secondary flow to power absorption. The method is used to describe the operating characteristics of an example 111-cm (43.7-in.) diameter water brake. Correlating performance parameters are developed in a dimensional analysis.
Document ID
19730015589
Document Type
Other - NASA Technical Note (TN)
Authors
Evans, D. G. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 2, 2013
Publication Date
May 1, 1973
Subject Category
FLUID MECHANICS
Report/Patent Number
E-7120
NASA-TN-D-7234
Funding Number(s)
PROJECT: RTOP 501-24
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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