Mechanistic Model for the Breakup Length in Jet Atomization

Paper #:
  • 2016-01-9042

Published:
  • 2016-03-14
DOI:
  • 10.4271/2016-01-9042
Citation:
Diemuodeke, O. and Sher, I., "Mechanistic Model for the Breakup Length in Jet Atomization," SAE Int. J. Engines 9(2):1314-1319, 2016, doi:10.4271/2016-01-9042.
Pages:
6
Abstract:
In jet atomization, breakup length is the length of the continuous jet segment, before its breakup to discontinuous droplets. Hydrodynamic instability theory, implemented in CFD codes, is often complemented by semi-empirical correlations for breakup length, which may limit parametric investigations. A basic mechanistic approach to the breakup length prediction, based on a simple momentum balance between the injected jet and the aerodynamic drag force due to the surrounding gas, which complements the classic hydrodynamic instability breakup mechanism, is suggested. This model offers a simple complementing mechanistic model. It is shown that obtained results compare well with published experiments, and with the established empirical correlation of Wu and Faeth (1995). A simplified version of the model, taking into account an inviscid hydrodynamic model is shown to maintain plausibility of breakup length predictions in fuel-injection relevant conditions.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Article
2016-09-06
Article
2016-08-24
Standard
2013-12-17
Training / Education
2009-12-15
Training / Education
1999-09-27
Technical Paper / Journal Article
2010-10-05