Transactions of Nanjing University of Aeronautics & Astronautics
Experiment on Vaporization of Jet into Cross-Flow
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Abstract:
The injection characteristics of the main fuel nozzle, which is widely applied in advanced lean-premixed-prevaporized (LPP) low-emission combustors, can be simplified as the atomization and vaporization processes of a jet into cross-flow. In this study, a nozzle with a diameter of 0.4 mm is designed and processed through the heating of the inlet air, and the vaporization characteristics are investigated. The optical measurement and cyclone separation methods are separately used to investigate the evaporation rate of a jet into cross-flow. Experimental results show that the fuel evaporation rate in cross-flow is mainly affected by the Weber number (We), equivalent ratio (φ), momentum rate of fuel to air (q), and air temperature. In addition, the inlet temperature is a crucial factor for the evaporation ratio of a jet into cross-flow. The evaporation results measured by two different methods in the same cross-flow are very close to each other with a deviation within 10%.
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Clc Number:
V231.2
CHINA AERO-SCIENCES
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