Measurement of temperature and pressure on the surface of a blunt cone using FBG sensor in hypersonic wind tunnel

Prasad, Guru AS and Sharath, U and Nagarjun, V and Hegde, GM and Asokan, S (2013) Measurement of temperature and pressure on the surface of a blunt cone using FBG sensor in hypersonic wind tunnel. In: MEASUREMENT SCIENCE & TECHNOLOGY, 24 (9).

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Abstract

Measurement of temperature and pressure exerted on the leeward surface of a blunt cone specimen has been demonstrated in the present work in a hypersonic wind tunnel using fiber Bragg grating (FBG) sensors. The experiments were conducted on a 30 degrees apex-angle blunt cone with 51 mm base diameter at wind flow speeds of Mach 6.5 and 8.35 in a 300 mm hypersonic wind tunnel of Indian Institute of Science, Bangalore. A special pressure insensitive temperature sensor probe along with the conventional bare FBG sensors was used for explicit temperature and aerodynamic pressure measurement respectively on the leeward surface of the specimen. computational fluid dynamics (CFD) simulation of the flow field around the blunt cone specimen has also been carried out to obtain the temperature and pressure at conditions analogous to experiments. The results obtained from FBG sensors and the CFD simulations are found to be in good agreement with each other.

Item Type:	Journal Article
Publication:	MEASUREMENT SCIENCE & TECHNOLOGY
Publisher:	IOP PUBLISHING LTD
Additional Information:	copyright for this article belongs to IOP PUBLISHING LTD
Keywords:	fiber Bragg grating sensor; temperature and pressure measurements; wind tunnel; temperature sensor package
Department/Centre:	Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Date Deposited:	30 Oct 2013 11:14
Last Modified:	06 Nov 2018 07:22
URI:	http://eprints.iisc.ac.in/id/eprint/47622

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