Systematic Investigation of Bluff-Body Combustion Instability
Abstract
The objectives, work carried out and results obtained during a Phase 11 STTR project are reported. An capability for unsteady flows is added to a sensitivity tool which numerically solves the continuous sensitivity equations. A feedback control law is implemented to control numerically an acoustic instability, which is modeled by coupling pressure and velocity perturbations at an inflow boundary condition. Axi-symmetric simulations are presented for the burner both without methane injection and with five injection locations. The computation is performed using a 12-specie methane/air chemistry model with finite-rate chemical kinetics. An experimental investigation is pursued of a circular bluff-body burner equipped with multiple fuel injectors. The axial injector is used as a pilot flame for premixed observations at equivalence ratios of 0.4 and 0.5.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 24, 2005
- Accession Number
- ADA431034
Entities
People
- Andrew G. Godfrey
- Gene Cliff
- Uri Vandsburger