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1 Systems : journal of transdisciplinary systems science

1 2006

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Zastosowanie techniki termoanemometrycznej w badaniach modelowych nad rozprzestrzenianiem zanieczyszczeń gazowych

Moryń-Kucharczyk E., Jonas P., Mazur. O., Podolski M., Uruba V.

Systems : journal of transdisciplinary systems science

2006

Vol. 11, nr 1

247-254

Simultaneous measurement of velocity and concentration in flow of two gases mixture is required at several wind tunnel experiments, e.g. modeling of pollutant dispersion. A thermoanemometer is a suitable tool for such measurements owing to it broad dynamic range for measurement of velocity and concentration fluctuations. The paper presents a measurement method by means of a special dual hot-wire probe (modification of the DANTEC t. 55P71) in a stream of the air/CO2 mixture. The in-house developed procedure of the simultaneous measurement of both the mean and the r.m.s. values of concentration and velocity was applied to investigation of a gaseous carbon dioxide round jet spreading into a collateral air flow. Performed experiments indicate that the applied measurement method might be useful for the turbulent diffusion investigations in complex conditions. They also confirm the usability of carbon dioxide as a tracer gas in modeling of gaseous pollutant spreading.