Results 51 to 60 of about 633,794 (335)

LES evaluation of the effects of equivalence ratio fluctuations on the dynamic flame response in a real gas turbine combustion chamber [PDF]

open access: yes, 2013
Large Eddy Simulations (LES) of a lean swirl-stabilized gas turbine burner are used to analyze mechanisms triggering combustion instabilities. To separately study the effect of velocity and equivalence ratio fluctuations, two LES of the same geometry are
Gicquel, Laurent Y.M.   +3 more
core   +4 more sources

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

open access: yesAdvanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger   +10 more
wiley   +1 more source

Quantitative assessment method of muzzle flash and smoke at high noise level on field environment

open access: yesScientific Reports, 2023
It is quite a challenge to obtain the temperature and species concentration fields of muzzle flash at high noise level. In this numerical study, radiation intensity of muzzle flash received by the high-speed Complementary Metal-Oxide-Semiconductor (CMOS)
Chenguang Yan, Chenguang Zhu
doaj   +1 more source

Influence of Flow Rate Distribution on Combustion Instability of Hypergolic Propellant

open access: yesAerospace, 2022
Combustion instability is the biggest threat to the reliability of liquid rocket engines, whose prediction and suppression are of great significance for engineering applications.
Yushan Gao   +4 more
doaj   +1 more source

A Transfer Function Approach to Structural Vibrations Induced by Thermoacoustic Sources [PDF]

open access: yes, 2004
To decrease NOx emissions from a combustion system, lean premixed combustion in combination with an annular combustor is used. One of the disadvantages is an increase in sound pressure levels in the combustion system, resulting in an increased excitation
Boer, André de, Huls, Rob, Kok, Jim
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Problems Encountered in Fluctuating Flame Temperature Measurements by Thermocouple

open access: yesSensors, 2008
Some thermocouple experiments were carried out in order to obtain sensitivity of thermocouple readings to fluctuations in flames and to determine if the average thermocouple reading was representative of the local volume temperature for fluctuating ...
Nadir Yilmaz   +3 more
doaj   +1 more source

Preparation of functional fiber hybrid enhanced high strength and multifunctional protein based adhesive

open access: yesMaterials & Design, 2022
Protein based adhesive is limited by poor mechanical properties and water resistance. Inspired by the structure of muscle tissue, a complex structure of layered double hydroxide (LDH) anchored chicken feather fiber (CFF) and tannic acid (TA) was ...
Ying Zhou   +8 more
doaj   +1 more source

Impact of symmetry breaking on the Flame Transfer Function of a laminar premixed flame

open access: yesProceedings of the Combustion Institute, 2019
This work presents a numerical study of the acoustic response of a laminar flame with tunable asymmetry. A V-shaped premixed flame is stabilised in the wake of a cylindrical flame holder that can be rotated.
T. Kaiser   +3 more
semanticscholar   +1 more source

Fire retardant action of mineral fillers [PDF]

open access: yes, 2011
Endothermically decomposing mineral fillers, such as aluminium or magnesium hydroxide, magnesium carbonate, or mixed magnesium/calcium carbonates and hydroxides, such as naturally occurring mixtures of huntite and hydromagnesite are in heavy demand as ...
Artur Witkowski   +40 more
core   +1 more source

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