Directional sensitivity of skin friction measurements using nematic liquid crystal

Buttsworth, D. R. and Elston, S. J. and Jones, Terry V. (1998) Directional sensitivity of skin friction measurements using nematic liquid crystal. Measurement Science and Technology, 9 (11). pp. 1856-1865. ISSN 0957-0233


The directional sensitivity of a new liquid crystal technique for aerodynamic skin friction measurement has been assessed. Experiments were performed using a turntable device installed in a laminar flow duct. Nematic liquid crystal was deposited onto the centre of the turntable. Various initial liquid crystal layer orientations (turntable angles) and magnitudes of applied skin friction were investigated. The dynamic and steady state response was measured using the transmission of polarized monochromatic light. Steady state predictions based on a simple director model are shown to be in reasonable agreement with the experimental results. The current results demonstrate the potential of the nematic technique in skin friction vector measurement applications.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: ® 1998 lOP Publishing Ltd. Published version deposited in accordance with the copyright policy of the publisher.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - Department of Mechanical and Mechatronic Engineering
Date Deposited: 30 Nov 2007 11:47
Last Modified: 28 Aug 2013 07:09
Uncontrolled Keywords: skin friction; nematic liquid crystal; aerodynamics; diagnostics
Fields of Research : 09 Engineering > 0901 Aerospace Engineering > 090101 Aerodynamics (excl. Hypersonic Aerodynamics)
09 Engineering > 0915 Interdisciplinary Engineering > 091501 Computational Fluid Dynamics
02 Physical Sciences > 0206 Quantum Physics > 020604 Quantum Optics
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Identification Number or DOI: 10.1088/0957-0233/9/11/011

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