Models for fuel droplet heating and evaporation: Comparative analysis

Sazhin, Sergei; Kristyadi, Tarsisius; Abdelghaffar, W.A.; Heikal, Morgan

doi:10.1016/j.fuel.2006.02.012

Cited by 130 publications

(59 citation statements)

References 46 publications

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“…The properties of the quasi-components in the quasi-discrete model are the same as discussed in [27]. The thermo-physical properties of n-heptane and iso-octane, two components used in Surrogates A and B, are assumed to be the same as in [33] and [34], respectively. The physical properties of toluene, the third component used in Surrogate A and B, are taken from [35,36].…”

Section: Quasi-discrete Modelmentioning

confidence: 99%

Modelling of heating and evaporation of gasoline fuel droplets: A comparative analysis of approximations

Elwardany¹,

Sazhin²,

Farooq³

2013

Fuel

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Modelling of gasoline fuel droplet heating and evaporation processes is investigated using several approximations of this fuel. These are quasi-components used in the quasi-discrete model and the approximations of these quasi-components (Surrogate I (molar fractions: 83.0% n-C 6 H 14 + 15.6% n-C 10 H 22 + 1.4% n-C 14 H 30 ) and Surrogate II (molar fractions: 83.0% n-C 7 H 16 + 15.6% n-C 11 H 24 + 1.4% n-C 15 H 32 )). Also, we have used Surrogate A (molar fractions: 56% n-C 7 H 16 + 28% iso-C 8 H 18 + 17% C 7 H 8 ) and Surrogate B (molar fractions: 63% n-C 7 H 16 + 20% iso-C 8 H 18 + 17% C 7 H 8 ), originally introduced based on the closeness of the ignition delay of surrogates to that of gasoline fuel. The predictions of droplet radii and temperatures based on three quasi-components and their approximations (Surrogates I and II) are shown to be much more accurate than the predictions using Surrogates A and B.

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Section: Quasi-discrete Modelmentioning

confidence: 99%

Modelling of heating and evaporation of gasoline fuel droplets: A comparative analysis of approximations

Elwardany¹,

Sazhin²,

Farooq³

2013

Fuel

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“…The analysis by these authors was based on the numerical solution of the heat conduction equation inside droplets. An alternative approach was suggested and developed in [8][9][10][11][12][13]. In these papers both finite liquid thermal conductivity and recirculation inside droplets (via the effective thermal conductivity (ETC) model [14]) were taken into account by incorporating the analytical solution to the heat conduction equation inside the droplet into the numerical scheme.…”

Section: Introductionmentioning

confidence: 99%

“…The preliminary validation of the model developed in [8][9][10][11][12] against published experimental data was reported in [9]. This validation, however, was limited to the comparison of predicted and calculated droplet diameters or global characteristics such as the ignition delay.…”

Section: Introductionmentioning

confidence: 99%

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Monodisperse monocomponent fuel droplet heating and evaporation

Kristyadi

Deprédurand

Castanet

et al. 2010

Fuel

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a b s t r a c tThe results of numerical and experimental studies of heating and evaporation of monodisperse acetone, ethanol, 3-pentanone, n-heptane, n-decane and n-dodecane droplets in an ambient air of fixed temperature and atmospheric pressure are reported. The numerical model took into account the finite thermal conductivity of droplets and recirculation inside them based on the effective thermal conductivity model and the analytical solution to the heat conduction equation inside droplets. The effects of interaction between droplets are taken into account based on the experimentally determined corrections to Nusselt and Sherwood numbers. It is pointed out that the interactions between droplets lead to noticeable reduction of their heating in the case of ethanol, 3-pentanone, n-heptane, n-decane and n-dodecane droplets, and reduction of their cooling in the case of acetone. Although the trends of experimentally observed droplet temperatures and radii are the same as predicted by the model taking into account the interaction between droplets, the actual values of the predicted droplet temperatures can differ from the observed ones by up to about 8 K, and the actual values of the predicted droplet radii can differ from the observed ones by up to about 2%. It is concluded that the effective thermal conductivity model, based on the analytical solution to the heat conduction equation inside droplets, can predict the observed average temperature of droplets with possible errors not exceeding several K, and observed droplet radii with possible errors not exceeding 2% in most cases. These results allow us to recommend the implementation of this model into CFD codes and to use it for multidimensional modelling of spray heating and evaporation based on these codes.

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“…It leads to inhibition of technology development at cooling surfaces [1], various coatings [2], ink jet printing [3,4], spraying fuel in internal combustion engines [5] and etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation of drop dynamic contact angle on copper surface

Orlova

Feoktistov

Кузнецов

2015

EPJ Web of Conferences

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Abstract. This paper presents experimental results of the studying the effect of surface roughness, microstructure and flow rate on the dynamic contact angle at spreading of distilled non deaerate water drop on a solid horizontal substrates. Copper substrates with different roughness have been investigated. For each substrate static contact angles depending on volume flow rate have been obtained using shadow system. Increasing the volume flow rate resulted in an increase of the static contact angle. It was found that with increasing surface roughness dynamic contact angle arises. Also difference in formation of the equilibrium contact angle at low and high rates of drop growth has been detected.

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Models for fuel droplet heating and evaporation: Comparative analysis

Cited by 130 publications

References 46 publications

Modelling of heating and evaporation of gasoline fuel droplets: A comparative analysis of approximations

Modelling of heating and evaporation of gasoline fuel droplets: A comparative analysis of approximations

Monodisperse monocomponent fuel droplet heating and evaporation

Investigation of drop dynamic contact angle on copper surface

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