Measuring the pressure curves in a convergent nozzle and in Laval nozzles Features - pressure distribution in convergent and divergent nozzles - three nozzles with different contours - velocity of sound and shock wave Learning objectives/experiments - pressure curve in -- de Laval nozzles -- convergent nozzles - connection between inlet pressure and mass flow rate or exit pressure and mass flow rate - how pressure drop in the nozzle affects the temperature - determining the critical pressure ratio (Laval pressure ratio) - demonstration of the "choking effect" - proof of shock waves Specification [1] nozzle pressure distribution in actual flow of compressible fluids [2] three nozzles with pressure measurement points: 1 convergent nozzle, 1 short and 1 long de Laval nozzle [3] compressed air regulator for adjusting the pressure downstream of the nozzle [4] needle valve on the flow meter for adjusting the back pressure [5] instruments: manometer and digital temperature display upstream and downstream of the nozzle as well as rotameter Technical data Air consumption of the experimental unit - compressed air: max. 10bar - air consumption: approx. 5g/s 3 nozzles, brass - 1 x de Laval nozzle, short nozzle extension - 1 x de Laval nozzle, long nozzle extension - 1 x convergent nozzle Compressed air regulator - control range: 0...8,6bar Measuring ranges - temperature: 0...100°C - pressure: 2x 0...10bar, 8x 1...9bar - mass flow rate: 0,7...8,3g/s 230V, 50Hz, 1 phase 230V, 60Hz, 1 phase; 120V, 60Hz, 1 phase UL/CSA optional LxWxH: 750x450x830mm Weight: approx. 45kg
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