Results 101 to 110 of about 1,003 (200)
Causality and intrinsic thermoacoustic instability modes
, 2014 Direct numerical simulation of a confined laminar premixed flame has been performed in an anechoic combustor, showing self-sustained intrinsic thermoacoustic oscillations. Theoretical predictions based on acoustic jump relations and the n − τ model for the flame are presented and causality concerns are discussed.
Courtine, Emilien +6 more
openaire +2 more sources
On singularities and instability of reconstruction in thermoacoustic tomography
, 2009 We consider the problem of thermoacoustic tomography (TAT), in which one needs to reconstruct the initial value of a solution of the wave equation from its value on an observation surface. We show that if some geometric rays for the equation do not intersect the observation surface, the reconstruction in TAT is not Hölder stable.
openaire +2 more sources
The effects of hydrogen enrichment on flame and flow dynamics of a swirl-stabilised partially premixed methane-air flame are studied using large eddy simulation.
core +2 more sources
Ammonia–methane (NH3–CH4) mixtures have potentials to serve as low-carbon fuels for gas turbines. Recent studies demonstrated that secondary air injection was an effective strategy to reduce NOx emissions from the combustion of NH3–CH4–air mixtures ...
Yang, Haojie +5 more
core +2 more sources
Ötz-T: 3D-printed open-source turbidity sensor with Arduino shield for suspended sediment monitoring. [PDF]
HardwareX, 2023 Droujko J, Kunz F, Molnar P.
europepmc +1 more source
Experimental Study of a Transcritical Thermoacoustic Device
, 2018 A prototype transcritical thermoacoustic engine has been constructed and tested, yielding thermoacoustic results. Three different thermoacoustic “stack” designs have been evaluated in the present study.
Alexander, Dayle N.
core +1 more source
Thermoacoustic instabilities result from the interaction between heat and sound in a confined space, and they pose challenges due to self-sustained high amplitude oscillations.
Arabi, Sadaf
core
Design and Implementation of Low-Voltage Tunable Capacitive Micro-Machined Transducers (CMUT) for Portable Applications. [PDF]
Micromachines (Basel), 2022 Goel C, Cicek PV, Robichaud A.
europepmc +1 more source
, 2011 This work presents a new approach for the damping of thermoacoustic instabilities. The use of porous ceramics with high sound absorbent capabilities as lining in combustion chambers was studied in order to suppress self induced combustion instabilities ...
Giese, Frank
core
Short- and long-term predictions of chaotic flows and extreme events: a physics-constrained reservoir computing approach. [PDF]
Proc Math Phys Eng Sci, 2021 Doan NAK, Polifke W, Magri L.
europepmc +1 more source