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Development of a multi-approach and multi-scale numerical method applied to atomization

Abstract : The purpose of this work has been to develop a multi-approach and multi-scale numerical method applied to the simulation of two-phase flows involving non miscible, incompressible and isothermal fluids, and more specifically primary atomization. This method is based on a coupled approach between a refined local mesh and a coarser global mesh. The coupling is explicit with refinement in time, i.e. each domain evolves following its own time-step. In order to account for the different scales in space and time of the atomization process, this numerical method couples two different two-phase numerical methods: an interface capturing method in the refined local domain near the injector and a sub-grid method in the coarser global domain in the dispersed spray region. The code has been developed and parallelized in the OpenFOAMR software. It is able to reduce significantly the computational cost of a large eddy simulation of a coaxial atomization, while predicting with accuracy the experimental data.
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Submitted on : Wednesday, June 27, 2018 - 11:49:05 AM
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  • HAL Id : tel-01824487, version 1

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Felix Dabonneville. Development of a multi-approach and multi-scale numerical method applied to atomization. Mechanics of the fluids [physics.class-ph]. Normandie Université, 2018. English. ⟨NNT : 2018NORMR018⟩. ⟨tel-01824487⟩

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