Universiti Teknologi Malaysia Institutional Repository

Effect of atomizing air flow on spray atomization of aninternal-mix twin-fluid atomizer

Chong, Cheng Tung and Hochgreb, Simone (2015) Effect of atomizing air flow on spray atomization of aninternal-mix twin-fluid atomizer. Atomization And Sprays, 25 (8). pp. 657-673. ISSN 1044-5110

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Official URL: http://dx.doi.org/10.1615/AtomizSpr.2015011361


The effect of the atomization air flow rate on the spray characteristics of a swirling twin-fluid atomizer operating on Diesel fuel is investigated. The mean droplet axial velocity and size distributions were simultaneously measured using a phase Doppler anemometer (PDA). The mean droplet diameter is found to increase with radial distance from the spray centreline, while its axial velocity decreases from a peak at the centreline. Increasing the atomizing air-liquid fuel mass ratio (ALR) reduces the fuel droplet size due to the increased shear and increases the spray penetration length as a result of increased momentum. Comparison of the drop size-ALR relations to previous independently developed correlations shows good agreement. A comparison was made between the observable boundaries obtained with Mie scattering and the droplet number density. It is found that the Mie images correspond to 95%-99% edge of the cumulative droplet mass distribution through the spray.

Item Type:Article
Uncontrolled Keywords:airblast, twin fluid, atomizer, nonreacting spray, PDA
Subjects:A General Works
ID Code:58351
Deposited By: Haliza Zainal
Deposited On:04 Dec 2016 12:07
Last Modified:12 Mar 2017 15:20

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