Proper orthogonal and dynamic mode decomposition analyses of nonlinear combustion instabilities in a solid-fuel ramjet combustor

W Li, D Zhao, L Zhang, X Chen - Thermal Science and Engineering …, 2022 - Elsevier
In ramjet propulsion systems, syelf-excited combustion instability is highly undesirable. It
may lead to violent structural vibration and even mission failure. For this, self-excited …

Numerical investigations on solid-fueled ramjet inlet thermodynamic properties effects on generating self-sustained combustion instability

W Li, D Zhao, X Chen, Y Sun, S Ni, D Guan… - Aerospace Science and …, 2021 - Elsevier
In this work, combustion instability of the solid-fueled ramjet (involving diffusion-dominant
combustion process) is investigated using a numerical model. Effects of inlet thermodynamic …

Analytical solutions for the acoustic field in thin annular combustion chambers with linear gradients of cross-sectional area and mean temperature

D Wang, J Nan, L Yang, AS Morgans, J Li - Aerospace Science and …, 2023 - Elsevier
Predictions of thermoacoustic instabilities in annular combustors are essential but difficult.
Axial variations of flow and thermal parameters increase the cost of numerical simulations …

Analytical solutions of acoustic field in annular combustion chambers with non-uniform cross-sectional surface area and mean flow

J Li, D Wang, AS Morgans, L Yang - Journal of Sound and Vibration, 2021 - Elsevier
Low-order acoustic network models, treating the complex combustor geometry as a network
of simple geometry elements, are typically used to analyse circumferential combustion …

Three-Dimensional Analytical Solutions for Acoustic Transverse Modes in a Cylindrical Duct with Axial Temperature Gradient and Non-Zero Mach Number

J Nan, J Li, L Yang - Aerospace, 2022 - mdpi.com
Cylindrical ducts with axial mean temperature gradient and mean flows are typical elements
in rocket engines, can combustors, and afterburners. Accurate analytical solutions for the …

Analytical solutions for the three-dimensional acoustic field in a rectangular duct with temperature gradient and mean flow

J Nan, J Li, Y Song, L Yang - Aerospace Science and Technology, 2021 - Elsevier
Rectangular ducts with mean temperature distribution and bulk flow are typical industrial
elements sustained to high-frequency transverse thermoacoustic instabilities. However …

[PDF][PDF] Sensitivity Analysis of Flame Transfer Function Measurements

HF Kohlenberg, IA Fischer - 2019 - researchgate.net
This master's thesis 'Sensitivity Analysis of Flame Transfer Function Measurements' deals
with the uncertainty propagation and sensitivity analysis in the context of experimental …

Study on Mechanism of Heating Temperature Field of Aluminum Foil Seal

C Xin, S Sun, J Liu - IOP Conference Series: Materials Science …, 2020 - iopscience.iop.org
The theoretical basis for non-contact sealing detection is lacking for the sealing performance
of aluminum foil sealing. First, simulation and analysis of heat transfer characteristics of …