INVESTIGATION OF DROPLET SIZE DISTRIBUTION EFFECT IN PREDICTION OF LIQUID AND VAPOR PENETRATION LENGTH IN THE DIESEL SPRAY

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MOHAMMADIAN ESFAHANI EHSAN; MAZAHERI KIUMARS; PASDARSHAHRI HADI

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:2 Page(s): 189-198

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Title

INVESTIGATION OF DROPLET SIZE DISTRIBUTION EFFECT IN PREDICTION OF LIQUID AND VAPOR PENETRATION LENGTH IN THE DIESEL SPRAY

Author(s)

MOHAMMADIAN ESFAHANI EHSAN | MAZAHERI KIUMARS | PASDARSHAHRI HADI | Issue Writer Certificate

Keywords

DIESEL FUELQ2

DROPLET DIAMETER DISTRIBUTIONQ1

PENETRATION LENGTHQ1

SAUTER MEAN DIAMETERQ1

Abstract

The aim of this study is numerical investigation of an evaporating and non-reacting diesel spray operating in a high pressure and high temperature constant volume combustion chamber, as an essential step in simulation of liquid fuels combustion. To this end, the impact of droplets diameter distribution on estimating two critical characteristic parameters, i.e., liquid and vapor PENETRATION LENGTHs is studied using the open-source OpenFOAM code. In order to determine droplets diameter distribution effect, three different distributions ranging from 0.25-100 micron are chosen and the liquid and vapor PENETRATION LENGTHs are individually calculated for each distribution. The results are validated against the experimental data published by Sandia National Laboratory. The results show that, while the droplets diameter distribution has a remarkable effect on the predicted value of the liquid length, it leads to overestimating liquid PENETRATION LENGTHs up to more than two times; its effect on the vapor length prediction is negligible. Also, assuming a nozzle diameter distribution leads to non-physical increase in the value of liquid length. This non-physical prediction may lead to the misleading prediction of spray impingement to piston and the cylinder walls resulting in an error in unburnt hydrocarbons concentration as well as the engine efficiency estimation.

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APA: Copy

MOHAMMADIAN ESFAHANI, EHSAN, MAZAHERI, KIUMARS, & PASDARSHAHRI, HADI. (2016). INVESTIGATION OF DROPLET SIZE DISTRIBUTION EFFECT IN PREDICTION OF LIQUID AND VAPOR PENETRATION LENGTH IN THE DIESEL SPRAY. MODARES MECHANICAL ENGINEERING, 16(2), 189-198. SID. https://sid.ir/paper/178826/en

Vancouver: Copy

MOHAMMADIAN ESFAHANI EHSAN, MAZAHERI KIUMARS, PASDARSHAHRI HADI. INVESTIGATION OF DROPLET SIZE DISTRIBUTION EFFECT IN PREDICTION OF LIQUID AND VAPOR PENETRATION LENGTH IN THE DIESEL SPRAY. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(2):189-198. Available from: https://sid.ir/paper/178826/en

IEEE: Copy

EHSAN MOHAMMADIAN ESFAHANI, KIUMARS MAZAHERI, and HADI PASDARSHAHRI, “INVESTIGATION OF DROPLET SIZE DISTRIBUTION EFFECT IN PREDICTION OF LIQUID AND VAPOR PENETRATION LENGTH IN THE DIESEL SPRAY,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 2, pp. 189–198, 2016, [Online]. Available: https://sid.ir/paper/178826/en

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