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Physics > Fluid Dynamics

arXiv:2411.18753 (physics)
[Submitted on 27 Nov 2024]

Title:A Hybrid Immersed-Boundary/Front-Tracking Method for Interface-Resolved Simulation of Droplet Evaporation

Authors:Faraz Salimnezhad (Koc University), Hasret Turkeri (Tusas Engine Industries), Iskender Gokalp (Tubitak Marmara Research Center), Metin Muradoglu (Koc University)
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Abstract:A hybrid sharp-interface immersed-boundary/front-tracking (IB/FT) method is developed for interface-resolved simulation of evaporating droplets in incompressible multiphase flows. A one-field formulation is used to solve the flow, species mass fraction and energy equations in the entire computational domain with appropriate jump conditions at the interface. An image point and ghost cell methodology is coupled with a front-tracking method to achieve an overall second order spatial accuracy for the mass fraction boundary condition on the droplet surface. The immersed-boundary method is also extended to simulate mass transfer from a solid sphere in a convective environment. The numerical method is first validated for the standard benchmark cases and the results are found to be in good agreement with analytical solutions. The method is shown to be overall second order accurate in space. Employing a moving reference frame methodology, the method is then applied to simulate evaporation of a deformable droplet in a convective environment and the results are compared with the existing evaporation models widely used in spray combustion simulations.
Subjects: Fluid Dynamics (physics.flu-dyn); Computational Physics (physics.comp-ph)
Cite as: arXiv:2411.18753 [physics.flu-dyn]
  (or arXiv:2411.18753v1 [physics.flu-dyn] for this version)
  https://doi.org/10.48550/arXiv.2411.18753

Submission history

From: Faraz Salimnezhad [view email]
[v1] Wed, 27 Nov 2024 21:02:15 UTC (15,180 KB)
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