Impact of Holder Materials on the Heating and Explosive Breakup of Two-Component Droplets

Dmitry Antonov, Jérôme Bellettre, Dominique Tarlet, Patrizio Massoli, Olga Vysokomornaya and Maxim Piskunov
Additional contact information
Dmitry Antonov: National Research Tomsk Polytechnic University, Tomsk 634050, Russia
Jérôme Bellettre: Université de Nantes, Rue Christian Pauc, BP 50609, 44306 Nantes CEDEX 3, France
Dominique Tarlet: Université de Nantes, Rue Christian Pauc, BP 50609, 44306 Nantes CEDEX 3, France
Patrizio Massoli: Istituto Motori–Consiglio Nazionale delle Ricerche, Via Marconi 8, 80125 Napoli, Italy
Olga Vysokomornaya: National Research Tomsk Polytechnic University, Tomsk 634050, Russia
Maxim Piskunov: National Research Tomsk Polytechnic University, Tomsk 634050, Russia

Energies, 2018, vol. 11, issue 12, 1-17

Abstract: The heating of two-component droplets and the following explosive breakup of those droplets have been extensively studied over the most recent years. These processes are of high interest, since they can significantly improve the performance of many technologies in fuel ignition, thermal and flame liquid treatment, heat carriers based on flue gases, vapors and water droplets, etc. Research throughout the world involves various schemes of droplet heating and supply (or, less frequently, injection) to heating chambers. The most popular scheme features the introduction of a two-component or multi-component droplet onto a holder into the heating chamber. In this research, we study how holder materials affect the conditions and integral characteristics of droplet heating and explosive breakup: heating time until boiling temperature; minimum temperature sufficient for droplet breakup; number and size of fragments in the resulting droplet aerosol, etc. Experiments involve droplets that are produced from flammable (oil) and non-flammable (water) components with significantly different thermophysical and optical properties, as well as boiling temperature and heat of vaporization. The most popular elements with the scientific community, such as ceramic, steel, aluminum, copper, and phosphorus rods, as well as a nichrome wire, serve as holders. We establish the roles of energy inflow from a holder to a droplet, and energy outflow in the opposite direction. We compare the holder results with a supporting thermocouple, recording the drop temperature under a heat transfer provided at 350°C. Finally, we forecast the conditions that are required for a significant improvement in the performance of thermal and flame water treatment through the explosive breakup of two-component droplets.

Keywords: two-component droplet; heating; evaporation; explosive breakup; disintegration; droplet holder material (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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