NASA NTRS · 19900000116
Detecting Boundary-Layer Transition In Cold Environments
Abstract
Transition-detection study conducted in Langley 0.3-Meter Transonic Cryogenic Tunnel, using specialized hot-film system designed specifically for use in cryogenic wind tunnels. Quantitative transition-location data obtained at nearly cryogenic conditions, 360 degree R (200 K) represents first definitive transition Reynolds numbers obtained in cryogenic wind tunnel. Multichannel data-acquisition system processes data from 40 hot-film sensors by use of desktop computer. Concept enables on-line determination of boundary-layer transition in such cryogenic wind tunnels as National Transonic Facility.
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Johnson, C. B., Carraway, D. L., Stainback, P. C., Fancher, M. F.. 1990-03-01. Detecting Boundary-Layer Transition In Cold Environments. https://ntrs.nasa.gov/citations/19900000116
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