Results 91 to 100 of about 34,611 (247)
A study of the suppression of combustion oscillations with mechanical damping devices Final report, 1 Jul. 1966 - 30 Sep. 1967 [PDF]
Mechanical damping devices for suppression of combustion ...
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Decoupling climate and human impacts on the nitrogen cycle during the Irish Bronze Age
Journal of Quaternary Science, EarlyView.ABSTRACT Disentangling climate variability and human activity in past nitrogen cycling is key to understanding ecosystems. Previous studies in Ireland observed a widespread, permanent shift in terrestrial nitrogen cycling during Later Prehistory, potentially linked to intensifying land‐use.
Sarah Ferrandin +2 more
wiley +1 more source
Numerical calculations of pressure oscillations in a side-dump ramjet engine [PDF]
, 1984 Pressure oscillations in a side-dump ramjet engine have been studied, using a one-dimensional numerical analysis. The engine is treated in two parts; the inlet section, including a region of two-phase flow downstream of fuel injection, and a dump ...
Culick, F. E. C., Yang, V.
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Journal of Raman Spectroscopy, EarlyView.We studied the temporal evolution of the rotational coherent anti‐Stokes Raman scattering (RCARS) signal of CO2 to determine the S‐branch Raman linewidth, which is an essential parameter for accurate spectral modeling in RCARS gas‐phase diagnostics. We found a non‐monotonic J‐dependence of the S‐branch Raman linewidth not accounted for in previously ...
Henry Misoi +4 more
wiley +1 more source
Applied SciencesThe premixed combustion of a gas turbine is prone to thermoacoustic oscillation, which affects the safety of combustion systems. This study experimentally investigated the suppression mechanism of a stratified jet-in-crossflow on the thermoacoustic ...
Rongyue Sun, Chengfei Tao
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Moderate Fire Temperatures Affect the Structure of Clayey Oxisol Aggregates
Land Degradation &Development, EarlyView.ABSTRACT Wildfires have become increasingly frequent and intense worldwide, raising concerns about their impacts on soil systems. However, the thermal responses of clay‐rich Oxisols, dominated by Fe and Al oxides, remain poorly understood. In this study, samples from the 0 to 5 cm layer of six Oxisols were subjected to controlled heating at ...
Yasmmin Tadeu Costa +5 more
wiley +1 more source
AerospaceCombustion instability is an abnormal working state that often occurs in advanced solid rocket motors (SRMs), which can arouse pressure oscillations, increase the risk of mission failure, and even cause structural damage.
Fengnan Guo +4 more
doaj +1 more source
Combustion Oscillation in Oil Mist Firing
Transactions of the Japan Society of Mechanical Engineers, 1962 This paper deals with the unstable combustion of liquid fuel in a combustor. Owing to the increase of air-fuel ratio in the range larger than stoichiometric one, combustion becomes unstable, the noise increases and also the pressure and the temperature in the combustor oscillate at a frequency of 20 to 50 cps. Moreover, blow-off phenomenon results from
Takashi SATO +2 more
openaire +3 more sources
Spatiotemporal Fire Patterns and Post‐fire Forest Change in Peru (2000–2021)
Land Degradation &Development, EarlyView.ABSTRACT Fire is increasingly more frequent and severe in many tropical regions, leading to significant forest loss, diminished biodiversity, and reduced Nature's contributions to people (NCPs). In this study, we analyzed the spatiotemporal patterns of fire in Peru and its regions, focusing on: (1) burned area, (2) size, and (3) number of fires, using ...
Maricel Móstiga +3 more
wiley +1 more source
Linear Theory of Pressure Oscillations in liquid-Fueled Ramjet Engines [PDF]
, 1983 Pressure oscillations in ramjet engines are studied. within quasi one-dimensional linear acoustics. The flow field in the dump combustor is approximated by division into three parts: a flow of reactants, a region containing combustion products, and a ...
Culick, F. E. C., Yang, V.
core