Digital Atomizer-Lab: Atomisation with spray propagation

Background:

Creation of a basic module for digital twins for modelling liquid atomisation processes with spray propagation.

Objectives:

Modelling of the entire atomisation process from initial liquid disintegration to subsequent spray propagation.

Challenges:

The transient simulation requires long computing times. Special model optimisation for efficient calculation, preferably using cloud resources.

Solution approach:

• Implementation of the model based on pure OpenFOAM functionality with snappyHexMesh as meshing tool and adaptive grids as well as extensively extended solver for free surfaces ((compressible)InterIsoFoam)
• Intensive validation and model optimisation for various atomisation applications (fuel, water, etc.)
• Automation of the setup

Comparison of simulation experiment: particle sizes and velocities in the spray (Deux benchmark)

Core functionality:

Development and implementation of a transition model from a continuous (VoF) to a discrete consideration (Euler-Lagrange method).

Application:

Various atomisation applications such as AdBlue injection or paint atomisation.

Aninmation of the jet decay at Deux-Benchmark