The balance between surface and kinetic energies within an optimal micro-explosion

Tarlet D., Allouis C. G., Bellettre J.

INTERNATIONAL JOURNAL OF THERMAL SCIENCES, cilt.107, ss.179-183, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 107
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1016/j.ijthermalsci.2016.04.008
  • Dergi Adı: INTERNATIONAL JOURNAL OF THERMAL SCIENCES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.179-183
  • Anahtar Kelimeler: Micro-explosion, Emulsion, Mechanical energy, IN-OIL EMULSION, FUEL DROPLETS, WATER, COMBUSTION
  • Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

Micro-explosion is caused by the sudden vaporization of water drops inside water-in-oil emulsion. Past studies have shown an optimal diameter for dispersed water. This optimal micro-explosion produces the largest number of secondary droplets, i.e. the largest interfacial area among the resulting spray. Such an increase in the interfacial area within the spray causes a better and less polluting combustion process. By using an infra-red camera, the present experiments can measure the size and planar velocity of secondary droplets issued from an optimal and also a non-optimal emulsion. The distributions of kinetic energy and surface energy among the spray are then calculated and discussed. Among the secondary droplets, it results that the optimal micro-explosion favors surface energy over kinetic energy. (C) 2016 Elsevier Masson SAS. All rights reserved.