Software
We develop and use a variety of custom-built software tools for the prediction of single- and multiphase flows, most of which are available open source. These tools range from tailored numerical solvers capable of delivering rapid estimates for specific flow types within seconds, to comprehensive CFD codes that enable the simulation of complex multiphase systems and that are optimized for high-performance computing.
APECSS
APECSS is an open-source software toolbox for the simulation of pressure-driven bubble dynamics and acoustics, supporting different Rayleigh-Plesset models for bubble dynamics in incompressible and compressible media, as well as a Lagrangian wave tracking method to predict the acoustic emissions and interactions of pressure-driven bubbles, including the formation and attenuation of shock waves. We use APECSS for our fundamental research on cavitation and cavity collapse, as well as cavitation bubble clusters, as it allows us to obtain insight a detailed insight into related fluid dynamics and acoustics in a matter of seconds.
ECOGEN
ECOGEN is an advanced open-source CFD platform tailored to numerical simulation of compressible multiphase flows, featuring state-of-the-art finite-volume methods for interfacial flows and wave propagation on structured, unstructured and adpative meshes. Developed and maintained primarily by scientists at the French National Institute for Research in Digital Science and Technology (Inria), in our research we leverage and further extend the capabilities of ECOGEN to predict and investigate compressible multiphase flows under extreme conditions, such as cavitation bubble and shock wave dynamics.
Lethe
Lethe is an open-source computational fluid dynamics (CFD), discrete element method (DEM) and coupled CFD-DEM software which uses high-order continuous Galerkin formulations to simulate single and multiphase flows. Lethe is developed primarily by our colleagues from the CHAOS laboratory at Polytechnique Montréal and contains a family of solvers that are based on deal.II, a finite element library. We contribute to the development and use Lethe as part of our work into moment and Euler-Euler methods for dispersed multiphase flows of particles and droplets.
MultiFlow
MultiFlow is a fully coupled pressure-based finite-volume solver to predict the behaviour of single- and multiphase flows, ranging from incompressible to compressible flows. Equipped with state-of-the-art Lagrangian particle tracking, volume-of-fluid (VoF), front tracking, and immersed boundary (IBM) methods, MultiFlow can predict a large variety of gas-solid, gas-liquid and particle-laden flows. Developed primarily at the University of Magdeburg in Germany, we use MultiFlow to develop new numerical methods for the prediction of multiphase flows and to simulate complex multiphase flows, e.g. involving viscoelastic fluids.
Wave-DNA
Wave-DNA is an open-source software tool for one-dimensional and spherically-symmetric nonlinear acoustic waves in transient and spatially variable background flow fields. The motion of the background medium is accounted for by considering a convective form of the lossless Kuznetsov wave equation and solved using a finite-difference method. We develop and use Wave-DNA as part of our work on nonlinear acoustics.