Low-pressure twin-fluid atomization: Effect of mixing process on spray formation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F17%3APU121191" target="_blank" >RIV/00216305:26210/17:PU121191 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0301932216300271" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0301932216300271</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijmultiphaseflow.2016.10.015" target="_blank" >10.1016/j.ijmultiphaseflow.2016.10.015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Low-pressure twin-fluid atomization: Effect of mixing process on spray formation

Popis výsledku v původním jazyce

The present work comparably examines four different twin-fluid atomizers operated under the same op- erating conditions. Spray formation was examined by several approaches. The internal flow pattern was estimated using a simplified analytical approach, and the results were supported by the observation of the liquid discharge in the near-nozzle region. A high-speed back illumination was used for visualisation of the primary breakup. In the region of fully developed spray, the dynamics of droplets was studied using a phase-Doppler analyser (PDA). The information obtained from all methods was then correlated. Results show that the spray formation process depends mainly on the internal design of twin-fluid at- omizer at low gas to liquid ratios (GLR). The amount of gas influences the character of the internal two- phase flow, a mechanism of the liquid breakup, droplet dynamics and a resulting drop size distribution. Differences among the atomizers are reduced with the increase in GLR. Moreover, it was shown that a certain mixing process can inherently create the annular internal flow which generates a stable spray characterized by relatively low mean droplet size.

Název v anglickém jazyce

Low-pressure twin-fluid atomization: Effect of mixing process on spray formation

Popis výsledku anglicky

The present work comparably examines four different twin-fluid atomizers operated under the same op- erating conditions. Spray formation was examined by several approaches. The internal flow pattern was estimated using a simplified analytical approach, and the results were supported by the observation of the liquid discharge in the near-nozzle region. A high-speed back illumination was used for visualisation of the primary breakup. In the region of fully developed spray, the dynamics of droplets was studied using a phase-Doppler analyser (PDA). The information obtained from all methods was then correlated. Results show that the spray formation process depends mainly on the internal design of twin-fluid at- omizer at low gas to liquid ratios (GLR). The amount of gas influences the character of the internal two- phase flow, a mechanism of the liquid breakup, droplet dynamics and a resulting drop size distribution. Differences among the atomizers are reduced with the increase in GLR. Moreover, it was shown that a certain mixing process can inherently create the annular internal flow which generates a stable spray characterized by relatively low mean droplet size.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20303 - Thermodynamics

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

INTERNATIONAL JOURNAL OF MULTIPHASE FLOW

ISSN

0301-9322

e-ISSN

1879-3533

Svazek periodika

89

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

277-289

Kód UT WoS článku

000393002400020

EID výsledku v databázi Scopus

2-s2.0-84997831757