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Title

SIMULATION OF COMBUSTION IN A POROUS MEDIUM WITH HIGH PRESSURE AND TEMPERATURE CONDITIONS

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Abstract

 POROUS MEDIA HAS BENEFITS TO ENHANCE EVAPORATION OF DROPLETS IN LIQUID-FUEL BURNERS, REDUCE EMISSION OF POLLUTANTS AND MINIMIZE INSTABILITIES. THIS PAPER REPRESENTS THE NUMERICAL STUDY OF LIQUID-FUEL INJECTION AND COMBUSTION INSIDE CONSTANT-VOLUME CHEMICALLY INERT PM TO STABILIZE LEAN MIXTURE. 3D NUMERICAL RESULTS WERE OBTAINED BASED ON A MODIFIED KIVA-3V CODE. DIESEL IS DIRECTLY SPRAYED INSIDE HOT AND HIGH PRESSURE PM CHAMBER. COMPLETE EVAPORATION AND SELF-IGNITED WAS ACHIEVED DUE TO HIGH TEMPERATURE. THE RESULTS FOR AN ESPECIAL CONDITION HAVE COMPARED WITH AN EXPERIMENTAL DATA IN LITERATURE. CONTOURS OF DIESEL VAPOR, FLUID AND SOLID TEMPERATURE OF PM IN AZIMUTHALLY CROSS SECTION, WERE SHOWN. ALSO, EFFECTS OF MASS OF SPRAYED FUEL WERE STUDIED. THE RESULTS SHOW CONSIDERABLE REDUCTION IN CARBON MONOXIDE, NITROGEN MONOXIDE AND SOOT FORMATION.

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