Paper presented at the 8th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Mauritius, 11-13 July, 2011.
In experimental study of the diffusion there is commonly
used an admixture gas as a tracer that enters the main airflow.
The paper deals with the simultaneous measurement of the
molar concentration in binary-gas mixture by means of hotwire
anemometry. A special three-sensor probe has been
manufactured and used for this task. A case of polynomial
shaped 2D hill with the line source of tracer gas has been
studied in detail. Geometry of the hill was taken from Almeida
at al. Experimental study of the binary-mixture concentration
field over the hill has been done.