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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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Abstract

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.

Document Type:Article
Additional Information: LIDO-Berichtsjahr=1999,
Title:An experimental and numerical study of kerosine spray evaporation in a premix duct for gas turbine Combustors at high pressure
Authors:
AuthorsInstitution or Email of Authors
Brandt, M.UNSPECIFIED
Rachner, M.UNSPECIFIED
Schmitz, G.UNSPECIFIED
Date:1998
Journal or Publication Title:Combustion Science and Technology
Refereed publication:Yes
In ISI Web of Science:Yes
Volume:Vol 138
Page Range:pp. 313-348
Status:Published
Keywords:Spray evaporation, high pressure, gas turbine combustion chamber, prefilming airblast atomizer, premix duct, kerosine
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:other
HGF - Program Themes:E - no assignement
DLR - Research area:Aeronautics
DLR - Program:E - no assignement
DLR - Research theme (Project):UNSPECIFIED
Location: Köln-Porz
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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