Client
University of Colorado, Boulder, CO
Project Objectives
- Develop a numerical model to predict the acoustic modes in a coupled combustion system including the reactant inlet, combustion chamber, and exhaust systems
- An accurate acoustic model of a combustion system is needed to predict the acoustic modes of the system, and how they may couple to shear layer modes, jet modes, and heat release instability modes.
Summary of Project and Results (Non-Confidential)
- Linearized the equations of mass and momentum conservation in terms of perturbation (acoustic) parameters
- Allowed separable solutions and obtained ordinary differential equations
- Developed interface and boundary conditions for the combustion system
- Estimated the convective effects from the combustion processes
- Developed a numerical procedure to solve the resulting algebraic complex equation to obtain the acoustic modes
- Validated the predicted acoustic modes against experiments