Měření charakteristiky dýzy obdélníkového průřezu na vodní trati

Abstract

The bachelor thesis deals with convergent-divergent nozzles with a rectangular cross-section during water flow. In the introduction, I deal with cavitations, types of cavitation and its practical use, and then also the influence of the physical properties of liquids on the formation of cavitations, loss evaluation theory and mistakes that may have occurred during measurements. The practical part deals with the description of measuring devices, calculation of the cavitations parameter, loss outflow and discharge coefficient and the evaluation of nozzle characteristics with and without cavitations. The thesis includes an evaluation of the initial conditions for the formation of cavitations for a given nozzle geometry.