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An experimental and theoretical study of the flow phenomena within a vortex sink rate sensorTests were conducted to obtain a description of the flow field within a vortex sink rate sensor and to observe the influence of viscous effects on its performance. The characteristics of the sensor are described. The method for conducting the test is reported. It was determined that for a specific mass flow rate and the geometry of the vortex chamber, the flow in the vortex chamber was only affected, locally, by the size of the sink tube diameter. Within the sink tube, all three velocity components were found to be higher for the small sink tube diameters. As the speed of rotation of the sensor was increased, the tangential velocities within the vortex chamber, as well as in the sink tube, increased in proportion to the speed of rotation.
Document ID
19740022518
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Goglia, G. L. (Old Dominion Univ. Norfolk, VA, United States)
Patel, D. K. (Old Dominion Univ. Norfolk, VA, United States)
Date Acquired
September 3, 2013
Publication Date
June 1, 1974
Subject Category
Fluid Mechanics
Report/Patent Number
NASA-CR-139648
TR-74-T2
Accession Number
74N30631
Funding Number(s)
CONTRACT_GRANT: NGL-47-003-007
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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