Abstract
An aspirating hot-film probe is developed to measure local mean gas composition in supersonic flows. The probe consists of a constant temperature hot-film sensor operating in a channel with a choked exit. Thus, the flow over the hot film is influenced only by total temperature, total pressure, and gas concentration. The use of the probe requires a separate measurement of the total temperature in the gas flow. The probe has a spatial resolution of 0.011 in. and shows acceptable sensitivity to flow angularity. The probe is used in the study of an unheated supersonic air/helium mixing layer in a 23 cm × 23 cm supersonic wind tunnel. Data are presented in raw form and after reduction to concentration and mean flow quantities.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Adler, D. 1972: A hot-wire technique for continuous measurement in unsteady concentration fields of binary gaseous mixtures. J. Phys. E. 5, 163–169
Ahmed, S. A.; So, R. M. C. 1986: Concentration distributions in a model combustor. Exp. Fluids 4, 107–113
Blackshear, P. L.; Fingerson, L. 1962: Rapid-response heat flux probe for high temperature gases. Am. Rocket Soc. J. 32, 1709–1715
Brown, G. L.; Rebollo, M. R. 1972: A small, fast-response probe to measure composition of a binary gas mixture. AIAA Journal 10, 649–652
Devillers, J.-F.; Diep, G. B. 1973: Hot-wire measurements of gas mixture concentrations in a supersonic flow. DISA INFO 14, 29–36
Jones, B. G.; Wilson, R. J. 1979: Gas concentration measurements with a temperature compensated aspirating probe. Proc. of the Fifth Biennal Symp. on Turbulence (Eds. Patterson, G. K.; Zakin, J. L.), 105–210. Princeton: Science Press.
Kwok, F. T.; Andrew, P. L.; Ng, W. F.; Schetz, J. A. 1991: Experimental investigation of a supersonic shear layer with slot injection of helium. AIAA Journal 29, 1426–1435
Mason, E. A.; Saxena, S. C. 1958: Approximate formula for thermal conductivity of gas mixture. Phys. Fluids Vol. 1, 361–369
Ng, W. E.; Epstein, A. H. 1983: High-frequency temperature and pressure probe for unsteady compressible flows. Rev. Sci. Instrum. 54, 1678–1683
Ninnemann, T. A. 1990: Aspirating probes for measurements of mean concentration and fluctuating quantities in supersonic air/helium shear layers. M.S. Thesis, Dept. of Mechanical Engineering, Virginia Polytechnic Institute and State University
Thomas, R. H.; Schetz, J. A. 1985: Distributions across the plume of transverse liquid and slurry jets in supersonic airflow. AIAA J. 23, 1892–1901
Way, J.; Libby, P. A. 1971: Application of hot-wire anemometry and digital techniques to measurements in a turbulent helium jet. AIAA Journal 9, 1567–1573
Way, J.; Libby, P. A. 1970: Hot-wire probes for measuring velocity and concentration in helium-air mixtures. AIAA J. 8, 976–978
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Ninnemann, T.A., Ng, W.F. A concentration probe for the study of mixing in supersonic shear flows. Experiments in Fluids 13, 98–104 (1992). https://doi.org/10.1007/BF00218155
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00218155