Implementation and Validation of a Geometric Advection Scheme in a CLSVOF Solver
Year: 2025
Type: conference-paper
Abstract: In this work, a Coupled Level Set and Volume of Fluid (CLSVOF) solver using a geometric advection scheme is proposed and implemented. By improving droplet advection fidelity compared to existing methods, a reduction in the cost of characterising liquid breakup can be achieved, contributing to better fuel atomisation in propulsion systems. Validation of the solver is performed using a simple bubble advection case, where improved performance and field error compared to an algebraic CLSVOF implementation is noted. Verification is performed by replicating a planar airblast atomiser experiment. Here, good agreement with experimental results on breakup dynamics is observed along with clear improvement in droplet advection fidelity compared to algebraic methods. A comparison with a geometric VoF solver shows similar performance and accuracy due to the high Weber number flow. The isoCLSVOFFoam solver presented in this work presents a promising alternative to existing CLSVOF codes, particularly when good droplet resolution and surface tension modelling are required.
Author: Tomas MRAZEK
Institution: Technical University of Munich
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6920636350
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