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A new multipoint thin-film diagnostic technique for fluid dynamic studies (1988)

Stack, J. P. ; Mangalam, S. M. ; Sewall, W. G. ; [et al.]

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Publication Date: 2019-06-28

Description: A multielement hot-film sensor has been developed with closely-spaced elements (2.5 mm) in the streamwise direction. In addition to boundary-layer transition detection, the output of these sensors can reveal the locations of boundary-layer separation and reattachment by a 180 deg phase difference in the 0-200-Hz frequency bandwidth between sensor elements on each side of either the separation or reattachment point. This paper describes the features of multielement hot-film sensor arrays and discusses results from their application to a number of low-speed and transonic airfoil tests.

Keywords: INSTRUMENTATION AND PHOTOGRAPHY

Type: SAE PAPER 881453

Format: text

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