Results 41 to 50 of about 158 (150)

Investigation of High-Frequency Thermoacoustic Instabilities

, 2021
Dissertation, Universität Duisburg-Essen ...
openaire   +3 more sources

The physics and regularities of the neutron-thermoacoustic instability

Nuclear Physics and Atomic Energy, 2018
The physics and regularities of the neutron-thermoacoustic instability (NTAI) in nuclear channels with subcooled nucleate boiling flows are explained. The method for obtaining the characteristic equation of NTAI in a VVER-type reactor is given. The influence of steam reactivity coefficient ∂k/∂φ on NTAI boundaries is studied and the effect of a ...
S. N. Pelykh, Huiyu Zhou, O. B. Maksymova   +2 more
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Study on thermoacoustic instabilities in an aircraft engine combustor using 1D network model

Case Studies in Thermal Engineering
The purpose of this study was to evaluate the combustion instability characteristics of target aircraft combustors under development using network thermoacoustic (TA) models.
Juchan Son, Seungchai Jung, Shaun Kim, Daesik Kim   +3 more
doaj   +1 more source

Experimental Investigation of Thermoacoustics and High-Frequency Combustion Dynamics with Band Stop Characteristics in a Pressurized Combustor

Energies
In combustor systems, thermoacoustic instabilities may occur and must be avoided for reliable operation. An acoustic network model can be used to predict the eigenfrequencies of the instabilities and the growth rate by incorporating the combustion ...
Mehmet Kapucu, Jim B. W. Kok, Artur K. Pozarlik   +2 more
doaj   +1 more source

Boundaries of thermoacoustic instability in the thermoacoustic engine with cryogenic cooling [PDF]

Journal International Academy of Refrigeration, 2020
E.A. Zinoviev, G.V. Vorotnikov, A.I. Dovgyallo, S.O. Nekrasova   +3 more
openaire   +1 more source

Review of acoustic field effects on flame dynamics and combustion applications

International Journal of Coal Science & Technology
Acoustic-flame coupling technology is an interdisciplinary frontier field investigating the complex interactions between sound waves and combustion. Generally, the acoustic field can be divided into two modes based on its relative position to the flame ...
Zhiwei Su, Yaoyao Ying, Dong Liu
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

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

UV and Visible Radiation Characteristics of Thermoacoustic Instabilities in an Ammonia–Methane Premixed Swirl-Stabilized Combustor

Energies
Ammonia (NH3) is a promising carbon-free energy carrier for low-carbon power generation. However, in turbulent ammonia–methane (NH3-CH4) premixed swirling flames, operating at lean conditions to limit NOX, emissions can trigger strong thermoacoustic ...
Junhui Ma, Xianglan Fu, Dongqi Chen, Le Chang, Lingxue Wang, Yingchen Shi, Haocheng Wen, Bing Wang   +7 more
doaj   +1 more source

Predicted Thermoacoustic Flame Response at Megawatt Scale in a Near-Stoichiometric Atmospheric Industrial Furnace

Energies
While gas-turbine combustors have received much research attention, the forced response of large atmospheric industrial flames is much less studied. To improve the understanding of thermoacoustic instabilities in industrial combustion systems, the forced
Jesse Hofsteenge, Jim Kok
doaj   +1 more source