Entropy generation and CO2 emission in presence of pulsating oscillations in a bifurcating thermoacoustic combustor with a Helmholtz resonator at off-design …

Y Guan, S Becker, D Zhao, J Xu, M Shahsavari… - Aerospace Science and …, 2023 - Elsevier
In this work, we develop a 2D numerical model of a Y-shaped bifurcating combustor with a
Helmholtz resonator attached. Propane (C 3 H 8) is fueled and burnt with air by applying …

[HTML][HTML] Predicting thermoacoustic stability characteristics of longitudinal combustors using different endpoint conditions with a low Mach number flow

X Zhao, D Zhao, L Cheng, CM Shelton, J Majdalani - Physics of Fluids, 2023 - pubs.aip.org
Combustion instability frequently occurs in propulsion and power generation systems. It is
characterized by large-amplitude acoustic oscillations leading to undesirable …

Numerical investigation of combustion instability in a single-element liquid rocket engine: Intermittency routes before and after thermoacoustic instability

Y Liu, P Liu, Z Wang, W Ao, Y Guan - Aerospace Science and Technology, 2023 - Elsevier
This paper provides the first numerical proof of intermittency routes existing before and after
thermoacoustic instability, as we increase the oxidizer inlet temperature under fuel-lean (ϕ …

[HTML][HTML] Outlet boundary condition and mean temperature gradient effects on the minimum acoustics disturbances energy in triggering nonlinear thermoacoustic …

X Zhao, D Zhao, CM Shelton, B Wang, X Dong, J Li… - Physics of …, 2024 - pubs.aip.org
In this study, we theoretically investigate the impact of outlet boundary conditions and mean
temperature gradients on the maximum transient growth rate of acoustical energy and the …