TY - GEN
T1 - Numerical study of primary jet breakup in a simplex swirl atomizer using dual grid coupled level set Vof method
AU - Kant, Krishna
AU - Kumar, Mayank
AU - Reddy, Rajesh
AU - Banerjee, Raja
AU - Mangadoddy, Narasimha
AU - Vanka, Surya
N1 - Publisher Copyright:
Copyright © 2019 ASME
PY - 2019
Y1 - 2019
N2 - 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.
AB - 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.
KW - CLSVOF
KW - Dual grid
KW - LES
KW - OpenFOAM
KW - Primary atomization
KW - Re-distancing equation
KW - Simplex swirl atomizer
UR - http://www.scopus.com/inward/record.url?scp=85079663988&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85079663988&partnerID=8YFLogxK
U2 - 10.1115/GTINDIA2019-2411
DO - 10.1115/GTINDIA2019-2411
M3 - Conference contribution
AN - SCOPUS:85079663988
T3 - ASME 2019 Gas Turbine India Conference, GTINDIA 2019
BT - Combustion, Fuels, and Emissions; Renewable Energy
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME 2019 Gas Turbine India Conference, GTINDIA 2019
Y2 - 5 December 2019 through 6 December 2019
ER -