Results 241 to 250 of about 15,260 (296)
Some of the next articles are maybe not open access.
Combustion of droplets in sprays
Acta Astronautica, 1974Abstract The factors affecting the combustion of single droplets of various fuels have been fairly well elucidated in the past. However, there is a considerable lack of knowledge of burning rates of droplets in sprays. Knowledge is required to fill the gap between single droplet combustion and practical spray combustion in complex aerodynamic ...
N.A. Chigier, C.G. McCreath
openaire +1 more source
2013
The growth of combustion processes along the years was driven both by scientific and technical developments providing disruptive innovations and by the market requirements )(e.g., the development of HVOF spraying by Browning in 1983 was pushed forward by the need to produce WC-Co cermet coatings with superior properties).
Pierre L. Fauchais +2 more
openaire +1 more source
The growth of combustion processes along the years was driven both by scientific and technical developments providing disruptive innovations and by the market requirements )(e.g., the development of HVOF spraying by Browning in 1983 was pushed forward by the need to produce WC-Co cermet coatings with superior properties).
Pierre L. Fauchais +2 more
openaire +1 more source
Combustion of Droplets in a Fuel Spray
Nature, 1949A FUNDAMENTAL investigation is in progress at the National Gas Turbine Establishment of the mechanism of the combustion of droplets in a fuel spray. In particular, the factors influencing the rate of burning, that is, the rate of evaporation of the burning drops, are being investigated.
openaire +2 more sources
2017
Understanding turbulence is one of the most difficult topics in science and engineering. This is because turbulent spray combustion involves many areas of physics and chemistry which accompany a variety of mathematical challenges. Defining the various length and timescales existing in turbulent flow provides a better way to understand and characterize ...
Seong-Young Lee +2 more
openaire +1 more source
Understanding turbulence is one of the most difficult topics in science and engineering. This is because turbulent spray combustion involves many areas of physics and chemistry which accompany a variety of mathematical challenges. Defining the various length and timescales existing in turbulent flow provides a better way to understand and characterize ...
Seong-Young Lee +2 more
openaire +1 more source
Symposium (International) on Combustion, 1985
Most fuel sprays do not burn or evaporate as individual droplets but as a group. Based on previous studies it is shown that the transition from single droplet to group combustion depends on a single parameter ∈. In the limiting case ∈≪1, which corresponds to most spray parameters of practical interest, evaporation of the fuel occurs in a thin sheath or
M. Sichel, S. Palaniswamy
openaire +1 more source
Most fuel sprays do not burn or evaporate as individual droplets but as a group. Based on previous studies it is shown that the transition from single droplet to group combustion depends on a single parameter ∈. In the limiting case ∈≪1, which corresponds to most spray parameters of practical interest, evaporation of the fuel occurs in a thin sheath or
M. Sichel, S. Palaniswamy
openaire +1 more source
Evaporation and combustion of sprays
Progress in Energy and Combustion Science, 1983A description is provided of recent spray evaporation and combustion models, taking into account turbulent two- and three-dimensional spray processes found in furnaces, gas turbine combustors, and internal combustion engines. Within the class of spray models of interest, two major categories are distinguished, including locally homogeneous flow (LHF ...
openaire +1 more source
Nozzle Spraying Model of Combustion Thermal Spray
Advanced Materials Research, 2013The flame used in combustion flame spraying is typical of a high-temperature free jet. The flow fields of free jets are multi-phase flows that couple the mass and heat transfer. The analytical and numerical solutions to turbulent flows are engineering approximations. This work uses Prandtle’s mixing-length theory to describe the flame spreading of free
Wen Liang Guo, Zheng Guo
openaire +1 more source
Symposium (International) on Combustion, 1982
Percolation theory, which addresses the connectedness of randomly-defined regions of space, is used to investigate the geometry of the flame surface of a combusting spray in the fast-chemistry, flame-sheet limit. In particular, percolation theory predicts the existence of two distinct combustion regimes in non-premixed sprays, regimes defined herein as
Alan R. Kerstein, Chung K. Law
openaire +1 more source
Percolation theory, which addresses the connectedness of randomly-defined regions of space, is used to investigate the geometry of the flame surface of a combusting spray in the fast-chemistry, flame-sheet limit. In particular, percolation theory predicts the existence of two distinct combustion regimes in non-premixed sprays, regimes defined herein as
Alan R. Kerstein, Chung K. Law
openaire +1 more source
Symposium (International) on Combustion, 1996
Aspects of interphase transport and multiphase flow relevant to spray combustion are reviewed, considering the structure of the near-injector (dense-spray) region, drop breakup, drop/turbulence interactions and interphase drop transport. Existing measurements of dense-spray structure shown that the dispersedflow flow region is surprisingly dilute, that
openaire +1 more source
Aspects of interphase transport and multiphase flow relevant to spray combustion are reviewed, considering the structure of the near-injector (dense-spray) region, drop breakup, drop/turbulence interactions and interphase drop transport. Existing measurements of dense-spray structure shown that the dispersedflow flow region is surprisingly dilute, that
openaire +1 more source
A Multi-Section Droplet Combustion Model for Spray Combustion Simulation
Volume 2: Combustion, Fuels and Emissions, Parts A and B, 2011Since 1960s, from experimental observation, there are several stages for liquid droplets in multi-phase combustion: pure heating, pure evaporation without individual droplet combustion, and individual droplet combustion (burning) with individual flame around which enhances evaporation.
Wang, F. +3 more
openaire +2 more sources