Results 91 to 100 of about 1,003 (200)

Benchmarking machine learning models against full-scale acoustic absorption measurements in gas turbine liners

Fuel Communications
Accurate prediction of acoustic energy absorption in gas turbine combustors is critical for enhancing performance, mitigating thermoacoustic instabilities, and reducing emissions.
Abdullah Shahjalal, Roy Kalawsky, Demetrios Joannou, Faruk Ozdemir   +3 more
doaj   +1 more source

Steady-state statistics, emergent patterns and intermittent energy transfer in a ring of oscillators. [PDF]

Nonlinear Dyn, 2022
Pedergnana T, Noiray N.
europepmc   +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

A framework for obtaining frequency-dependent stability maps to mitigate thermoacoustic instabilities [PDF]

This paper utilizes Cauchy's argument principle in the frequency domain to develop novel stability maps, providing guidelines for measures which can be taken to mitigate thermoacoustic instabilities in combustion appliances.
Kornilov, Viktor,, de Goey, Philip; id_orcid, Ganji, Hamed F.,, Lopez Arteaga, Ines,, Ganji, Hamed F., Lopez Arteaga, Ines, de Goey, Philip,, Kornilov, Viktor, van Oijen, Jeroen; id_orcid, van Oijen, Jeroen,   +9 more
core   +1 more source

Numerical prediction of thermoacoustic instabilities with a V-Flame

, 2016
In this paper, results from a numerical solver for the Helmholtz equation using the Finite Element Method (FEM) for predicting thermoacoustic instabilities are presented.
Na, Wei, Boij, Susann, Efraimsson, Gunilla   +2 more
core  

Mitigating Thermoacoustic Instabilities in Premixed Hydrogen Flames using Axial Staging [PDF]

In this paper we demonstrate how axial staging can be utilised to mitigate thermoacoustic instabilities in a combustion system by flame redistribution. This is achieved by moving flow to a second stage flame while keeping the combined thermal power and ...
Ånestad, Aksel, Worth, Nicholas Alexander, Æsøy, Eirik, Dawson, James   +3 more
core   +1 more source

Flame Propagation Characteristics of Syngas-Air in the Hele-Shaw Duct with Different Equivalence Ratios and Ignition Positions. [PDF]

ACS Omega, 2022
Diao S, Wen X, Guo Z, He W, Deng H, Wang F.   +5 more
europepmc   +1 more source

Computational Investigations of Boundary Condition Effects on Simulations of  Thermoacoustic Instabilities

, 2016
This dissertation presents a formulation of the Continuous Sensitivity Equation Method (CSEM) applied to the Computational Fluid Dynamics (CFD) simulation of thermoacoustic instability problems.
Wang, Qingzhao
core  

On the use of sound absorption to suppress thermoacoustic instabilities under combustion chamber conditions

, 2019
The replacement of the Helmholtz resonators currently used for damping thermoacoustic instabilities in stationary gas turbines by ceramic pore absorbers could improve both the efficiency of combustion and the operating range of the gas turbines.
Ries, Hans-Christoph
core  

Universality in spectral condensation. [PDF]

Sci Rep, 2020
Pavithran I, Unni VR, Varghese AJ, Premraj D, Sujith RI, Vijayan C, Saha A, Marwan N, Kurths J.   +8 more
europepmc   +1 more source