NDLI: A.C. Plasma Anemometer for Hypersonic Mach Number Experiments

Content Provider	IEEE Xplore Digital Library
Author	Matlis, E.H. Corket, T.C. Gogineni, S.P.
Copyright Year	2005
Description	Author affiliation: Post-Doctoral Research Assistant, AME dept., AIAA student, member. University of Notre Dame, Notre Dame, Indiana, 46556, USA (Matlis, E.H.)
Abstract	A working prototype of a miniature 2 MHz a.c. driven, weakly-ionized plasma anemometer for measurements at hypersonic Mach numbers has been developed. This device uses a plasma discharge between two encapsulated electrodes as the primary sensing element. The discharge is driven by a low power (less than 5 Watt) a.c. source at voltages on the order of 350 Vr.m.s.at atmospheric pressure with electrode gaps of 0.076 mm (0.003 in.). The discharge has demonstrated sensitivity to mean and dynamic mass-flux variations at Mach numbers up to 5.0 and at frequencies of 200 kHz. In principle, a frequency response in excess of 1 MHz is possible. The advantages of the plasma anemometer are that it requires no frequency compensation up to its a.c. carrier frequency, has an amplitude-modulated output that has excellent common-mode rejection with a signal-to-noise ratio that is much better than a hot-wire, is robust with no sensor element to break, can have a small spatial volume, and is insensitive to temperature variations making calibration easier than thermal-based sensors. This sensor has applications for measurements in gas-turbine machinery, shock tubes, shock-boundary layer experiments, high-enthalpy hypersonic flows, and in plasma tunnels.
Starting Page	245
Ending Page	256
File Size	8291624
Page Count	12
File Format	PDF
ISBN	0780390962
DOI	10.1109/ICIASF.2005.1569930
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-08-29
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fluid flow measurement Plasma measurements Plasma devices Fault location Frequency Temperature sensors Plasma sources Atmospheric-pressure plasmas Electrodes Thermal sensors
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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