Effect of liquid/gas density ratio on primary jet breakup of pressure swirl atomizer: Experimental & numerical study

Michael, E and Keerthi, S K and Kolhe, Pankaj and et al, . (2019) Effect of liquid/gas density ratio on primary jet breakup of pressure swirl atomizer: Experimental & numerical study. In: ASME 2019 Gas Turbine India Conference, GTINDIA, 5-6 December 2019, Tamil Nadu, India.

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Abstract

This work reports experimental and numerical study of primary jet breakup of a pressure swirl atomizer. Experiments were performed in a constant volume spray chamber and the spray pattern was characterized as a function of different liquid/gas density ratios which was achieved by changing the ambient pressure. The liquid/gas density ratio was varied between ≈ 102 to 103 and the axial Reynold number was maintained at 6x103. Diffused backlight imaging in conjunction with high speed videography was used to visualize the spray. Parameters like spray cone angle, spray breakup length and flapping frequency was estimated. Additionally, POD analysis was performed to find the sheet instability modes. A corresponding numerical study using Coupled Level Set VOF method was performed keeping the liquid/gas density ratio of 10 and 102 to simulate the primary jet breakup using an in-house two-phase solver developed using OpenFOAM libraries. The solver was validated by following the numerical work of Fuster et al. Effect of computational mesh size on parameters like spray cone angle, breakup length was estimated.

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IITH Creators:
IITH CreatorsORCiD
Kolhe, PankajUNSPECIFIED
Banerjee, Rajahttp://orcid.org/0000-0002-7163-1470
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Breakup length, Flapping frequency, Liquid/gas density ratio, POD, Pressure swirl atomizer, Primary jet breakup, Spray cone angle, Indexed in Scopus
Subjects: Physics > Mechanical and aerospace
Divisions: Department of Mechanical & Aerospace Engineering
Depositing User: Team Library
Date Deposited: 02 Mar 2020 09:56
Last Modified: 02 Mar 2020 09:56
URI: http://raiith.iith.ac.in/id/eprint/7501
Publisher URL: http://doi.org/ 10.1115/GTINDIA2019-2513
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