Energy losses estimation in homogenous flash boiling spray

Yahav Moshkovich, Yeshayahou Levy, Eran Sher

Research output: Contribution to conferencePaperpeer-review

Abstract

When a pressurized bubbly mixture is driven out through an orifice, the mixture pressure abruptly drops and the bubbles undergo a rapid expansion process, which under some circumstances results in a rapid disintegration of the liquid bulk into small droplets (atomization). Depending on the initial conditions, heterogeneous or homogeneous nucleation of vapor bubbles may occur. For homogeneous nucleation, the vapor bubbles grow rapidly one towards the other, and when they touch each other the bubbles "explode". In this stage, the liquid around the bubbles is teared, and a spray with small and uniform droplets is formed. In the literature, it seems that the efficiency of the homogenous flash boiling process is very low. In this work, we analyze this process for possible energy losses.

Original languageEnglish
Pages1300-1307
Number of pages8
StatePublished - 1 Jan 2018
Externally publishedYes
Event58th Israel Annual Conference on Aerospace Sciences, IACAS 2018 - Tel-Aviv and Haifa, Israel
Duration: 14 Mar 201815 Mar 2018

Conference

Conference58th Israel Annual Conference on Aerospace Sciences, IACAS 2018
Country/TerritoryIsrael
CityTel-Aviv and Haifa
Period14/03/1815/03/18

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