Now showing items 1-10 of 63
Acoustic Characterization of Flame Blowout Phenomenon
(Georgia Institute of Technology, 2006-02-10)
Combustor blowout is a very serious concern in modern land-based and aircraft engine combustors. The ability to sense blowout precursors can provide significant payoffs in engine reliability and life. The objective of this ...
An experimental investigation of the operation of a Helmholz pulse combustor
(Georgia Institute of Technology, 1993-08)
Large Eddy Simulation of a High Aspect Ratio Combustor
(Georgia Institute of Technology, 2006-11-20)
The present research investigates the details of mixture preparation and combustion in a two-stroke, small-scale research engine with a numerical methodology based on large eddy simulation (LES) technique. A major motivation ...
Large Eddy Simulation of a Stagnation Point Reverse Flow Combustor
(Georgia Institute of Technology, 2006-08-17)
In this study, numerical simulations of a low emission lab-scale non-premixed combustor are conducted and analyzed. The objectives are to provide new insight into the physical phenomena in the SPRF (Stagnation Point Reverse ...
Simulations of a Sub-scale Liquid Rocket Engine: Transient Heat Transfer in a Real Gas Environment
(Georgia Institute of Technology, 2006-11-21)
The prediction of transient phenomena inside Liquid Rocket Engines (LREs) has not been feasible until now because of the many challenges posed by the operating conditions inside the combustion chamber. Especially, the ...
Large Eddy Simulation of premixed and partially premixed combustion
(Georgia Institute of Technology, 2006-11-13)
Large Eddy Simulation (LES) of bluff body stabilized premixed and partially premixed combustion close to the flammability limit is carried out in this thesis. The LES algorithm has no ad-hoc adjustable model parameters and ...
Sub-grid Combustion Modeling for Compressible Two-Phase Flows
(Georgia Institute of Technology, 2003-11-24)
A generic formulation for modeling the sub-grid combustion in compressible, high Reynolds number, two-phase, reacting flows has been developed and validated. A sub-grid mixing/combustion model called Linear Eddy Mixing ...
Dynamics of turbulent premixed flames in acoustic fields
(Georgia Institute of Technology, 2009-05-13)
This thesis describes computational and theoretical studies of fundamental physical processes that influence the heat-release response of turbulent premixed flames to acoustic forcing. Attached turbulent flames, as found ...
Study of compressible turbulent flows in supersonic environment by large-eddy simulation
(Georgia Institute of Technology, 2009-02-19)
A Large-Eddy Simulation (LES) methodology adapted to the resolution of high Reynolds number turbulent flows in supersonic conditions was proposed and developed. A novel numerical scheme was designed, that switches from a ...
Dynamics of longitudinally forced bluff body flames with varying dilatation ratios
(Georgia Institute of Technology, 2009-11-09)
This thesis focuses on experimentally measuring the response of varying dilatation ratio bluff body flames under harmonic excitation. Such flames are often encountered in jet engine afterburners and are susceptible to ...