Project Title:
Spray Combustion Stochastic Modeling Coupled with Laser Diagnostics
11.03-6688
912239
Spray Combustion Stochastic Modeling Coupled with Laser Diagnostics
Aerometrics, Inc.
550 Del Rey Avenue, Unit A
Sunnyvale
CA
94086
Alejandro Brena
De La Rosa
408-738-6688
MSFC
NAS8-39303
223
11.03-6688
912239
Abstract:
Spray Combustion Stochastic Modeling Coupled with Laser Diagnostics
This project will investigate the parallel development of a novel stochastic model
for drop and/or spray combustion and the development and implementation of sophisticated
laser diagnostics to provide the necessary data to test and validate the numerical
spray model. Stochastic methods have the potential of providing deep insight into
the physical phenomena occurring in spray combustion, i.e., evaporation, mixing diffusion,
chemical reaction, and the large fluctuation of the parameters which influence them.
The objectives of Phase I are to develop a one-dimensional Monte Carlo model of drop
and/or spray combustion; design and develop a test facility for burning single fuel
drops; implement Lagrangian particle tracking (LPT) and rainbow thermometry (RT)
experimental techniques to measure the velocity and the temperature of the liquid
drops, respectively; investigate the feasibility of integrating the LPT and RT techniques
for simultaneous measurement of velocity and temperature of the droplets; perform
preliminary experiments with iso-octane and n-heptane to test the LPT and RT techniques;
and compare with the predictions of the stochastic Monte Carlo model. Phase II will
expand the model to a three-dimensional version with complete, finite-rate chemistry,
turbulence modeling, and liquid-gas interphase coupling. A two-dimensional LPT system
will be developed. The RT system will be used with the firm's PDPA for testing and
validation purposes.
The stochastic spray model would have wide applications in the R&D and design of
gas turbine engines, liquid rocket engines, incinerators, and other practical combustion
systems.
stochastic spray modeling, spray combustion laser diagnostics