Numerical study of primary jet breakup in a simplex swirl atomizer using dual grid coupled level set Vof method

Krishna Kant, Mayank Kumar, Rajesh Reddy, Raja Banerjee, Narasimha Mangadoddy, Surya Vanka

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Primary breakup of a liquid jet emanating from a simplex swirl atomizer is numerically studied in this work. The liquid-gas interface is tracked using a coupled Level-Set VOF method. In order to improve the curvature calculation, a dual grid approach is used. Level set function is solved on a grid that is finer than the grid used to solve the rest of the variables. This solver is developed using OpenFOAM libraries and is validated by estimating the pressure profile and spurious velocities across the interface of a static bubble. The validation test shows significant improvement in the performance of curvature estimation without significant increase in the computational cost. Additionally, it is found that curvature calculation improves with increase in grid refinement index. A parametric study to understand the effects of grid refinement index on the flow features of the simplex swirl atomizer primary jet is reported here.

Original languageEnglish (US)
Title of host publicationCombustion, Fuels, and Emissions; Renewable Energy
Subtitle of host publicationSolar and Wind; Inlets and Exhausts; Emerging Technologies: Hybrid Electric Propulsion and Alternate Power Generation; GT Operation and Maintenance; Materials and Manufacturing (Including Coatings, Composites, CMCs, Additive Manufacturing); Analytics and Digital Solutions for Gas Turbines/Rotating Machinery
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791883532
DOIs
StatePublished - Jan 1 2019
EventASME 2019 Gas Turbine India Conference, GTINDIA 2019 - Chennai, Tamil Nadu, India
Duration: Dec 5 2019Dec 6 2019

Publication series

NameASME 2019 Gas Turbine India Conference, GTINDIA 2019
Volume2

Conference

ConferenceASME 2019 Gas Turbine India Conference, GTINDIA 2019
CountryIndia
CityChennai, Tamil Nadu
Period12/5/1912/6/19

Keywords

  • CLSVOF
  • Dual grid
  • LES
  • OpenFOAM
  • Primary atomization
  • Re-distancing equation
  • Simplex swirl atomizer

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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  • Cite this

    Kant, K., Kumar, M., Reddy, R., Banerjee, R., Mangadoddy, N., & Vanka, S. (2019). Numerical study of primary jet breakup in a simplex swirl atomizer using dual grid coupled level set Vof method. In Combustion, Fuels, and Emissions; Renewable Energy: Solar and Wind; Inlets and Exhausts; Emerging Technologies: Hybrid Electric Propulsion and Alternate Power Generation; GT Operation and Maintenance; Materials and Manufacturing (Including Coatings, Composites, CMCs, Additive Manufacturing); Analytics and Digital Solutions for Gas Turbines/Rotating Machinery (ASME 2019 Gas Turbine India Conference, GTINDIA 2019; Vol. 2). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/GTINDIA2019-2411