Atomization is the process of disintegration of a liquid jet into ligaments and subsequently into smaller droplets. A liquid jet injected from a circular orifice into cross flow of air undergoes atomization primarily due to the interaction of the two phases rather than an intrinsic break up. Direct numerical simulation of this process resolving the finest droplets is computationally very expensive and impractical. In the present study, we resort to multiscale modelling to reduce the computational cost. The primary break up of the liquid jet is simulated using Gerris, an open source code, which employs Volume-of-Fluid (VOF) algorithm. The smallest droplets formed during primary atomization are modeled as Lagrangian particles. This one-way coupling approach is validated with the help of the simple test case of tracking a particle in a Taylor-Green vortex. The temporal evolution of the liquid jet forming the spray is captured and the flattening of the cylindrical liquid column prior to breakup is observed. The size distribution of the resultant droplets is presented at different distances downstream from the location of injection and their spatial evolution is analyzed.
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ASME 2013 Gas Turbine India Conference
December 5–6, 2013
Bangalore, Karnataka, India
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5616-1
PROCEEDINGS PAPER
Numerical Simulations of Liquid Jet Break Up in a Crossflow Available to Purchase
Mohit Jain,
Mohit Jain
Indian Institute of Science, Bangalore, India
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Gaurav Tomar,
Gaurav Tomar
Indian Institute of Science, Bangalore, India
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R. V. Ravikrishna,
R. V. Ravikrishna
Indian Institute of Science, Bangalore, India
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Surya Prakash R.,
Surya Prakash R.
Indian Institute of Science, Bangalore, India
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B. N. Raghunandan
B. N. Raghunandan
Indian Institute of Science, Bangalore, India
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Mohit Jain
Indian Institute of Science, Bangalore, India
Gaurav Tomar
Indian Institute of Science, Bangalore, India
R. V. Ravikrishna
Indian Institute of Science, Bangalore, India
Surya Prakash R.
Indian Institute of Science, Bangalore, India
B. N. Raghunandan
Indian Institute of Science, Bangalore, India
Paper No:
GTINDIA2013-3690, V001T03A010; 8 pages
Published Online:
February 28, 2014
Citation
Jain, M, Tomar, G, Ravikrishna, RV, Prakash R., S, & Raghunandan, BN. "Numerical Simulations of Liquid Jet Break Up in a Crossflow." Proceedings of the ASME 2013 Gas Turbine India Conference. ASME 2013 Gas Turbine India Conference. Bangalore, Karnataka, India. December 5–6, 2013. V001T03A010. ASME. https://doi.org/10.1115/GTINDIA2013-3690
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