Prediction of flow-excited acoustic resonance in coaxial burners

Abstract 

In this project, numerical analysis models acoustic modes in cavities. Different cavities with various aspect ratios are used. The square cross-section cavity created a spinning mode. However, a small change from the square configuration created an attenuation of the amplitude, which impacts the mode. More importantly, the shear layer changed according to the acoustic mode behavior such that the separation point changes its spinning direction accordingly. Notably, the shape of the shear layer changes over time.
 

Partners 

Dr. Mostafa Rashed (MUST, Egypt) and Prof. Dr. Atef Mohany (ONTechU, Canada)