Planar drop-sizing and liquid volume fraction measurements of airblast spray in cross-flow using SLIPI-based techniques

Planar drop-sizing and liquid volume fraction measurements of airblast spray in cross-flow using SLIPI-based techniques

•Planar SMD and liquid volume fraction of airblast spray in cross-flow are studied.•Advanced SLIPI-based technique is used for measurements.•The SMD distribution improved with an increase in velocity of cross-flow at low GLR.•The distribution of liquid volume fraction is non-uniform at low GLR condi...

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Bibliographic Details
Published in:The International journal of heat and fluid flow Vol. 80; p. 108501
Main Authors: Kulkarni, Aniket P., Chaudhari, Vasudev D., Bhadange, Shubham R., Deshmukh, D.
Format: Journal Article
Language:English
Published: Elsevier Inc 01-12-2019
Subjects:
Liquid volume fraction distributions
Planar drop-sizing
SLIPI
Spray in cross-flow
Planar drop-sizing
Spray in cross-flow
Liquid volume fraction distributions
SLIPI
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Summary:•Planar SMD and liquid volume fraction of airblast spray in cross-flow are studied.•Advanced SLIPI-based technique is used for measurements.•The SMD distribution improved with an increase in velocity of cross-flow at low GLR.•The distribution of liquid volume fraction is non-uniform at low GLR condition. This paper presents planar measurements of Sauter mean diameter (SMD) and liquid volume fraction distributions of airblast spray injected into cross-flow. The experiments are conducted using a combination of structured laser illumination planar imaging with laser sheet drop-sizing (SLIPI-LSD) and particle/droplet imaging analysis (PDIA) techniques. Effect of gas to liquid mass ratio (GLR) and cross-flow velocity (Ucross) is studied. Planar SMD distribution at low GLR improved with increase in Ucross due to secondary atomization of large droplets. Uniform SMD distribution in a range of 10–20 µm is observed for GLR more than 3. The distribution of liquid volume fraction at low GLR condition shows poor dispersion with most of the liquid concentrated near the injector. The liquid volume fraction distribution improves with increase in GLR and better dispersion is observed for GLR more than 3 and two-phase momentum ratio (q2) greater than 13.06. Spatial bifurcation in liquid fraction is found for high GLR conditions. The SMD in the range of 10–20  µm and uniform distribution of liquid are observed for GLR more than 3 and q2 > 25.6.
ISSN:0142-727X
1879-2278
DOI:10.1016/j.ijheatfluidflow.2019.108501