A hybrid droplet vaporization-adaptive surrogate model using an optimized continuous thermodynamics distribution

Singer, Simcha L.; Hayes, Michael; Cooney, Alanna Y.

doi:10.1016/j.fuel.2020.119821

Cited by 5 publications

(1 citation statement)

References 43 publications

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“…Furthermore, more researchers study the impacts of preferential vaporization on combustion behaviours of multicomponent, such as ignition [6], lean blow-out (LBO) [7], spray flame structure and propagation [8]. Due to the complexity of spray combustion, some researchers studied the effects of preferential vaporization on droplet combustion [9] or Combustion Property Targets (CPTs) during droplet evaporation [10,11], which is the sub-grid phenomena of spray combustion.…”

Section: Introductionmentioning

confidence: 99%

Preferential droplet vaporization of a 24-component mixture under different ambient temperature, pressure and force convection

Luo

Liu

2021

ICLASS

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Petroleum-derived fuels like gasoline, kerosene, and diesel contain hundreds of species with a wide range of volatilities. Vaporization of such fuels usually favors more volatile species throughout the whole process. Such preferential vaporization has prevailed in practical applications, such as direct-injection engine and gas turbine. To study preferential vaporization of complex fuels, a 24-component mixture proposed in our prior work was used in the present study to represent the Chinese aviation fuel, RP-3. The classical model for droplet evaporation with force convection was used to study the preferential vaporization of fuel droplet, with Effective Thermal Conductivity/Effective Diffusivity, ETC/ED models that explores various extent of liquid mixing. The effects of ambient temperature (473-973 K), pressure (1-20 bar), and force convection (0-1 m/s) on preferential vaporization of 24component droplet have been investigated in this work. The degree of preferential vaporization is defined as 1/PeL. The results show that the preferential vaporization is inhibited by the increase of ambient temperature. High ambient pressure would lead to higher degree of preferential vaporization. For force convection, preferential vaporization is enhanced firstly and then inhabited by increasing intensity of force convection due to the competition between evaporation rate and liquid mass transfer.

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