An experimental and numerical study of kerosine spray evaporation in a premix duct for gas turbine Combustors at high pressure
Brandt, M. and Rachner, M. and Schmitz, G. (1998) An experimental and numerical study of kerosine spray evaporation in a premix duct for gas turbine Combustors at high pressure. Combustion Science and Technology, Vol 138 (1-6), pp. 313-348.
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The evaporation and mixing of kerosine emerging from a flat prefilming airblast atomizer was studied experimentally and numerically in an optical accessible, straight rectangular duct at conditions relevant for lean premixed and prevaporized combustion. Liquid phase properties were measured by Phase-Doppler anemometry and fuel vapour concentrations were determined by an infrared light extinction technique. Computations were based on the Lagrangian particle tracking technique, and captured the spray features sufficiently well with and without taking into account the spray feddback on the gas field. A degree of evaporation of 95% was measured after 100mm for 9 bar air pressure, 750 K air temperature and 120 m/s for air velocity. No autoignition of the fuel occurred. Parametric variations of pressure, temperature and velocity of the air flow, as well as of the initial temperature of the spray and of fuel loading were conducted. A strong influence of the initial fuel temperature of the spray and of fuel loading were conducted. A strong influence of the initial fuel temperature on evaporation was found. The air pressure had mainly an indirect but strong effect through atomization quality.
|Title:||An experimental and numerical study of kerosine spray evaporation in a premix duct for gas turbine Combustors at high pressure|
|Journal or Publication Title:||Combustion Science and Technology|
|In ISI Web of Science:||Yes|
|Page Range:||pp. 313-348|
|Keywords:||Spray evaporation, high pressure, gas turbine combustion chamber, prefilming airblast atomizer, premix duct, kerosine|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||no assignment|
|HGF - Program Themes:||E - no assignement|
|DLR - Research area:||Aeronautics|
|DLR - Program:||E - no assignement|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Institute of Propulsion Technology|
|Deposited By:||elib DLR-Beauftragter|
|Deposited On:||16 Sep 2005|
|Last Modified:||06 Jan 2010 12:59|
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