Results 101 to 110 of about 1,024 (213)

Nonlinear dynamic analysis and feedback control of thermoacoustic instability [PDF]

, 2018
This dissertation mainly studies the nonlinear dynamic behaviors of thermoacoustic instability and feedback control of thermoacoustic oscillations numerically and experimentally.
Li, Xinyan
core   +1 more source

The Effects of Parameter Settings on Triggering Time and Climb Rate during Lean-Premixed Combustion Thermoacoustic Oscillations

Applied Sciences
This study theoretically explored the effects of parameter settings on thermoacoustic oscillations with a low-order model. Three factors were explored—combustor length, inlet gas temperature and thermal power.
Chengfei Tao, Rongyue Sun, Yichen Wang, Liang Zhang, Jiangming Ye, Shaohua Liang   +5 more
doaj   +1 more source

Large-Eddy Simulation of combustion instabilities in a variable-length combustor. [PDF]

, 2013
This article presents a simulation of a model rocket combustor with continuously variable acoustic properties thanks to a variable-length injector tube. Fully compressible Large-Eddy Simulations are conducted using the AVBP code.
Garby, Romain, Laurent Selle, Thierry Poinsot, Romain Garby, Selle, Laurent, Poinsot, Thierry   +5 more
core   +1 more source

Analytical modeling of thermoacoustic instability influences in gas turbine combustors: A detailed parameter sensitivity analysis

Case Studies in Thermal Engineering
In this study, the effects of various system parameters on combustion instability were numerically identified through a network-based thermoacoustic model using the concept of a transfer function.
Seonyeong Kim, Daesik Kim
doaj   +1 more source

Time Series and Spectral Analysis of Thermoacoustic Oscillations for Propane-Oxyfuel Combustion in a Swirl-Stabilized, Nonpremixed Combustor. [PDF]

ACS Omega, 2023
Talal Q, Abubakar Z, Shakeel MR, AlSwat MS, Mokheimer EMA.   +4 more
europepmc   +1 more source

Exploring liquid fuel combustion dynamics in a swirl burner using dynamic mode decomposition

Engineering Applications of Computational Fluid Mechanics
Aero gas turbine engine combustors are transitioning from traditional Rich-Quench-Lean (RQL) staging to Lean Premixed Prevaporized (LPP) operation to reduce harmful NOx emissions and improve combustion efficiency.
Alireza Ghasemi, Jim B. W. Kok
doaj   +1 more source

Modeling and control of thermoacoustic instabilities

, 2003
This work deals with modeling and control of thermoacoustic combustion instabilities in lean premixed combustion systems. Because of the complex interactions present in thermoacoustic systems, a network modeling approach is used. The model of each network element or subsystem is obtained analytically, numerically, or by making use of experimental ...
openaire   +1 more source

Flow Characterisation of Flames in an Acoustically Excited Chamber [PDF]

, 2012
Flame-acoustic wave interactions have been studied widely in the combustion community; however the whole physicochemical mechanism is still not clear.
Chen, Li-Wei
core  

Synchronization of Low-Frequency Thermoacoustic Oscillation in Can-Annular Combustor via Compressor Combustion Casing

Energies
Thermoacoustic instability remains an important challenge in gas turbines. In can-annular combustors, cross-talk effects can lead to complex collective dynamics.
Yichen Wang, Guojun Sun, Zhiqian Liu, Yupeng Qin, Jiefeng Geng, Jikang Wang, Guogang Shu, Xuan Lv   +7 more
doaj   +1 more source

Analysis of Combustion Instability of Methane-Air Premixed Swirling Flame Based on OH-PLIF Measurements. [PDF]

ACS Omega, 2023
Deng K, Xue C, Liu Z, Hu J, Zhong Y.
europepmc   +1 more source