A multiresolution local-timestepping scheme for particle–laden multiphase flow simulations using a level-set and point-particle approach

Kaiser, J.W.J.; Appel, David L.; Fritz, Fabian; Adami, Stefan; Adams, Nikolaus A.

doi:10.1016/j.cma.2021.113966

Cited by 4 publications

(1 citation statement)

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“…In this study, due to the adoption of the hybrid VOF/DPM methodology, we can effectively simulate all stages of the shock-induced breakup, including the birth and the dynamics of small liquid particles that are consequently originated. Differently from what was recently performed in the Eulerian/Lagrangian model proposed in [42], here, the number of Lagrangian particles is not predetermined, but is increasing with time depending on the verification of the two transition criteria discussed in Section 2.2. The VOF-to-DPM method employs a dynamic mesh adaptation strategy, where the mesh resolution is automatically increased in the transition region between the two different phases, according to the volume fraction gradient field.…”

Section: Sub-droplets Trackingmentioning

confidence: 95%

Hybrid VOF–Lagrangian CFD Modeling of Droplet Aerobreakup

Rossano

Stefano

2022

Applied Sciences

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A hybrid VOF–Lagrangian method for simulating the aerodynamic breakup of liquid droplets induced by a traveling shock wave is proposed and tested. The droplet deformation and fragmentation, together with the subsequent mist development, are predicted by using a fully three-dimensional computational fluid dynamics model following the unsteady Reynolds-averaged Navier–Stokes approach. The main characteristics of the aerobreakup process under the shear-induced entrainment regime are effectively reproduced by employing the scale-adaptive simulation method for unsteady turbulent flows. The hybrid two-phase method combines the volume-of-fluid technique for tracking the transient gas–liquid interface on the finite volume grid and the discrete phase model for following the dynamics of the smallest liquid fragments. The proposed computational approach for fluids engineering applications is demonstrated by making a comparison with reference experiments and high-fidelity numerical simulations, achieving acceptably accurate results without being computationally expensive.

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Section: Sub-droplets Trackingmentioning

confidence: 95%