FUEL ATOMIZATION ANALYSIS FOR ADVANCED GAS TURBINE COMBUSTORS

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$49,980.00
Award Year:
1990
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
12324
Agency Tracking Number:
12324
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
3325-d Triana Blvd, Huntsville, AL, 35805
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Clifford E Smith
(205) 536-6576
Business Contact:
() -
Research Institution:
n/a
Abstract
CURRENT STATE-OF-THE-ART CFD SPRAY COMBUSTION CODES DO NOT MODEL THE ATOMIZATION PROCESS, AND USE EMPIRICALLY/ARBITRARILY PRESCRIBED DROPLET CHARACTERISTICS AT THE FUEL INJECTOR EXIT. THIS CRITICAL SHORTCOMING IMPEDS THE ANALYSIS OF IMPORTANT ASPECTS OF GAS TURBINE COMBUSTION. IN PHASE I OF THIS PROJECT, A COMPUTATIONAL MODEL OF THE ATOMIZATION PROCESS WILL BE DEVELOPED FROM FUNDAMENTAL PRINCIPLES,USING FILM DYNAMICS AND SURFACE WAVE INSTABILITY FORMULATIONS. THE COMPLETE PRIMARY BREAKUP PROCESS WILL BE MODELED, INCLUDING FILM STRETCHING, FORMATION OF CIRCUMFERENTIAL RIBBONS AND LIGAMENTS, AND DISTINGRATION OF LIGAMENTS INTO DROPLETS. SUCH AN INNOVATIVE APPROACH WILL ALLOW THE ACCURATE PREDICTION OF DROP SIZE AND DROP VELOCITY DISTRIBUTIONS FROM AIRBLAST AND PRESSURE FUEL INJECTORS. IN PHASE II, THE ATOMIZATION MODEL WILL BE ENHANCED TO INCLUDE SECONDARY ATOMIZATION, VAPORIZATION AND COMBUSTION, AND THEN COUPLED TO AN EXISTING CFD EULERIAN-LAGRANGIAN SPRAY COMBUSTION CODE. EXTENSIVE VERIFICATION AND VALIDATION STUDIES WILL BE PERFORMED, CULMINATING IN THE COMPARISON OF LEAN BLOWOUT WITH EXPERIMENTAL MEASUREMENTS.

* information listed above is at the time of submission.

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