Měření a výpočet supersonických ejektorů
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Abstract
Diplomová práce se zabývá analytickým, numerickým a experimentálním studiem proudění vzduchu v nadzvukovém ejektoru, který je umístěn v laboratoři katedry energetických zařízení na Technické Univerzitě v Liberci. Tento ejektor prošel kompletní opravou směšovací komory, kde došlo ke změně geometrie. S takto upravenou geometrií bylo provedeno několik měření, při nastaveních vzdáleností výstupní části trysky od směšovací komory, a to 1 mm, 2 mm a 3 mm. Dále pak při hodnotách hnacího tlaku 200kPa a 300kPa.
The master's thesis deals with the analytical, numerical and experimental investigation of the flow in the supersonic air ejector which is situated in the laboratory of the Department of Power Engineering Equipment at the Technical University of Liberec. The ejector mixing chamber had to be completely repaired since a scratch due to the previous machining had been found. As a result, a new geometry of the mixing chamber has been created. There were conducted several measurements for a different nozzle exit position (NXP): 1 mm, 2 mm, 3 mm. Furthermore, for a given NXP, two different values of stagnation pressure of 200 kPa and 300 kPa at the primary air inlet were investigated in more detail.
The master's thesis deals with the analytical, numerical and experimental investigation of the flow in the supersonic air ejector which is situated in the laboratory of the Department of Power Engineering Equipment at the Technical University of Liberec. The ejector mixing chamber had to be completely repaired since a scratch due to the previous machining had been found. As a result, a new geometry of the mixing chamber has been created. There were conducted several measurements for a different nozzle exit position (NXP): 1 mm, 2 mm, 3 mm. Furthermore, for a given NXP, two different values of stagnation pressure of 200 kPa and 300 kPa at the primary air inlet were investigated in more detail.
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ejektor, vzduch, numerická simulace, analytická metoda, nadzvukové proudění, Machovo číslo, Lavalova tryska, ejector, air, numerical analysis, analytical method, supersonic flow, Mach number, de Laval nozzle