A transition detection study using a cryogenic hot film system in the Langley 0.3-meter transonic cryogenic tunnel

摘要: A transition detection study was conducted in the Langley 0.3-Meter Transonic Cryogenic Tunnel (0.3-m TCT) using a specialized hot film system designed specifically for use cryogenic wind tunnels. The quantitative location data obtained at near conditions, 360 deg R (200K) represents first definitive Reynolds numbers tunnel. model tested both adiabatic and nonadiabatic wall conditions with wall-to-total temperature ratio as low 0.47. test results indicated an improved technique hot-film installation modified acquisition would allow on-line determination of boundary layer tunnels, such U.S. National Facility.