Turbulence Measurements in Hypersonic, Helium Flow.
PRINCETON UNIV N J DEPT OF AEROSPACE AND MECHANICAL SCIENCES
Pagination or Media Count:
Incompressible and compressible hot-wire theory is reviewed and many of the basic hot-wire equations are derived in detail. The instrumentation and probes used for measurements in a hypersonic boundary layer on the wall of a Mach 16 helium tunnel are described. Procedures for individual wire calibrations are outlined and typical results are presented. Data from measurements at the peak fluctuation point in the boundary layer are presented in terms of the rms mass flow and total temperature fluctuations. The data reduction problems encountered in compressible flow measurements are discussed, and the limitations of the hot-wire in hypersonic turbulent boundary layer measurements are pointed out. Author
- Fluid Mechanics