DVĚ METODY MĚŘENÍ RYCHLOSTI A KONCENTRACE V PROUDU SMĚSI DVOU PLYNŮ

Abstract cze:
Abstrakt: The small aerodynamic facility with variable gas density, concentration of the airhelium mixture and flow velocity is described. Next the procedure of mixing the preselected concentration of mixture is characterized. Then two methods of measurement velocity and concentration of a mixture flow are presented. The first one make use of a two heated sensors probe and allows us to draw instant values of velocity and concentration from the outputs of a thermoanemometer. A single hot-wire probe is applied at measurement by the second method. Then only time averaged values and statistical characteristics are gained from measurement.

Abstract eng:
Abstract: The small aerodynamic facility with variable gas density, concentration of the airhelium mixture and flow velocity is described. Next the procedure of mixing the preselected concentration of mixture is characterized. Then two methods of measurement velocity and concentration of a mixture flow are presented. The first one make use of a two heated sensors probe and allows us to draw instant values of velocity and concentration from the outputs of a thermoanemometer. A single hot-wire probe is applied at measurement by the second method. Then only time averaged values and statistical characteristics are gained from measurement.

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