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Recent developments in density, temperature and momentum fluctuation measurementAttention is drawn to recent advancements in the fluctuating line-reversal temperature measurement, the development of the two-dimensional drag-sensing probe into a three-dimensional drag-sensing probe, and the fluctuating density gradient cross beam Schlieren technique. An experimental apparatus is explained whereby the temperature fluctuation in a pulsating air-fuel ratio Bunsen burner is measured by means of sodium D-line reversal methods with a new photoelectric circuit to obtain both fluctuating and mean temperature data. The three-D drag probe is made possible by a newly invented differential and total magnetic sensing system that separates signals due to three orthogonal movements so that the vectorial momentum fluctuation can be measured. In the case of the Schlieren technique, the effect of anisotropic density gradients with respect to the angle between the polarization plane and the knife edge of a laser Schlieren system is studied.
Document ID
19750041725
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Battle, T. M.
Wang, P. K.
Cheng, D. Y.
(Santa Clara, University Santa Clara, Calif., United States)
Date Acquired
August 8, 2013
Publication Date
March 1, 1975
Subject Category
Instrumentation And Photography
Report/Patent Number
AIAA PAPER 75-535
Meeting Information
Meeting: American Institute of Aeronautics and Astronautics, Aero-Acoustics Conference
Location: Hampton, VA
Start Date: March 24, 1975
End Date: March 26, 1975
Sponsors: American Institute of Aeronautics and Astronautics
Accession Number
75A25797
Funding Number(s)
CONTRACT_GRANT: NGR-05-017-033
Distribution Limits
Public
Copyright
Other

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