Hot-wire anemometry in transonic flow

The use of hot-wire anemometry for obtaining fluctuating data in transonic flows has been evaluated. From hot-wire heat loss correlations based on previous transonic data, the sensitivity coefficients for velocity, density, and total temperature fluctuations have been calculated for a wide range of test conditions and sensor parameters. For sensor Reynolds numbers greater than 20 and high sensor overheat ratios, the velocity sensitivity remains independent of Mach number and equal to the density sensitivity. These conclusions were verified by comparisons of predicted sensitivities with those from recent direct calibrations in transonic flows. Based on these results, techniques are presented to obtain meaningful measurements of fluctuating velocity, density, and Reynolds shear stress using hot-wire and hot-film anemometers. Examples of these measurements are presented for two transonic boundary layers.

[1]  C. Horstman,et al.  Turbulent properties of a compressible boundary layer. , 1972 .

[2]  William C. Rose,et al.  Turbulence Measurement in Transonic Flow , 1977 .

[3]  C. C. Horstman,et al.  Turbulence measurements in hypersonic shock-wave boundary-layer interaction flows , 1976 .

[4]  D. A. Johnson,et al.  Turbulence in a Shock-Wave Boundary-Layer Interaction , 1975 .

[5]  D. R. Chapman,et al.  Computers vs. wind tunnels for aerodynamic flow simulations , 1975 .

[6]  V. A. Sandborn.  Resistance temperature transducers , 1972 .

[7]  R. Simpson,et al.  An experimental study of the turbulent prandtl number of air with injection and suction , 1970 .

[8]  H. Meier,et al.  Temperature Distributions in Supersonic Turbulent Boundary Layers , 1971 .

[9]  W. Behrens.  Total temperature thermocouple probe based on recovery temperature of circular cylinder , 1971 .

[10]  F. K. Owen,et al.  Mean and fluctuating flow measurements of a fully-developed, non-adiabatic, hypersonic boundary layer , 1975, Journal of Fluid Mechanics.

[11]  C. Forbes Dewey,et al.  Hot-wire Measurements in Low Reynolds Number Hypersonic Flows , 1961 .

[12]  Hideo Ikawa,et al.  Turbulent mixing layer experiment in supersonic flow , 1973 .

[13]  A. J. Laderman,et al.  Mean and fluctuating flow measurements in the hypersonic boundary layer over a cooled wall , 1974, Journal of Fluid Mechanics.

[14]  G. Deiwert,et al.  Computation of Separated Transonic Turbulent Flows , 1975 .

[15]  C. Horstman,et al.  Turbulence stress measurements in a nonadiabatic hypersonic boundary layer , 1975 .

[16]  L. Kovasznay,et al.  The Hot-Wire Anemometer in Supersonic Flow , 1950 .