Filtered Mass Density Function for Subgrid Scale Modeling of Turbulent Diffusion Flames
Final technical rept. 1 Jan 2003-31 Dec 2005
PITTSBURGH UNIV PA DEPT OF MECHANICAL ENGINEERING
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This research was primarily concentrated on the following issues 1 development of the joint velocity-scalar filtered density function for subgrid scale SGS closure of turbulent combustion and 2 implementation of the scalar filtered density function for large eddy simulation of complex turbulent flames. An extensive systematic study was performed and resulted in significant new findings. With regard to 1, a modelled transport equation was developed and solved for the joint density function. The predicted results via this model were more accurate than other existing SGS models. With regard to 2, the model was employed for prediction of a piloted jet diffusion flame and a bluff-body stabilized flame. The predicted results compared very well with experimental data.
- Fluid Mechanics
- Combustion and Ignition