2020 © DHCAE Tools GmbH I Contact I Disclaimer

Engineering and

Software Solutions

for CFD and FEA

DHCAE-Tools-Engineering-Software-Solutions-CFD-FEA-EN DHCAE-Tools-Engineering-Software-Solutions-CFD-FEA-DE

User area

Your are here: Our Products > Simulation Tools

For the dedicated modelling of

DHCAE Tools has, based on the renowned CFD toolbox OpenFOAM®, made extensions for a comfortable and professional usage of open source solver technology in an industrial environment.

 Valve application: FSI coupling of OpenFOAM® and CalculiX

Modelling of filter applications

Already in the development, the inflow on the filter can be optimised without building a prototype. This leads to a

Your benefits from filter modelling

Modelling approach

The utilised modelling is based on the so-called Euler-Lagrange approach, that takes account of the coninuous flow and the dispersed solid particles. In the simulation tool, especially the reaction of the particles on the filter is considered, e.g. the continuous shift of the flow into zones with lower resistance.

Two approaches are available:


For the work with the filter solver, the user can choose between two options:

Modelling for filter applications

Modelling for filter applications is made especially easy for the user:

Support and adaptations included

A support and adaptation package is always included in the package for the filter solver. By this, we adapt the solving possibilities of the tools to your specific requirements. If you need, for example, a special form of loading characteristic for your filters, it will be provided by us immediately. We also support you with the usage of the solver.

DHCAE Tools has created a tool that enables the solving of static fluid structure applications directy from a modelling environment. CalculiX (open source) as well as Abaqus can be used as structure solver, in case Abaqus is available in your company.


The solver is suitable for solid fields and shell elements.


It uses an iterative coupling with a consistent transfer of the pressure forces and shear stresses on the structure. The shifted geometry, as simulated by the structure solver, is transferred back to OpenFOAM®. Here, a geometry update takes place, and the flow forces are transferred from the deformed geometries on the structure solver. This procedure is continued as long as a convergence between the flow forces and the shifted structure is achieved.


By the data conversion from CalculiX results to ParaView, which was made available by DHCAE Tools, the results of flow and structure can be shown simultaneously.


Fluid-Structure-Interactions (FSI)

DHCAE FSI coupling between OpenFOAM® and CalculiX/Abaqus

Fluid-Structure-Interactions (FSI) occur when forces exert on an elastic solid by a flow and cause stresses, distensions or shifts. On the other hand, the flow can be influenced when shifts in the flow field are generated by external forces on an elastic solid. In both cases, the assumption of a solid wall, which is typical in the mere flow simulation (CFD), is quitted and replaced by the elastic modelling of the solid. By this, the fluid structure analysis shows the coupling of a CFD simulation with a solid problem.

Fluid-Structure-Interaction: Extension of an extrusion die by flow forces

Macro-Scale modelling: Particle distribution on the filter surface of a water filter

Macro-Scale modelling: Filter plant for air purification

A test environment is available for you

For a test of the filter simulation, a comfortable test environment with examples is available for you via the Internet. Here, you can directly test your filter application and evaluate, which hardware resources will be required by you later.

Click on the icon for more information

CFD-filter
OpenFOAM simulation methods and computational services.png

All-round carefree  package

for open source solver technology

DHCAE Tools supports the whole CFD/FEA workflow: software additions (CastNet), services, training courses, support and solver extensions.

FSI-extrusion tool Filter-Webinar valve_FSI_DHCAE.gif

New meso-scale modell with cake generation

PDF-Description                              Video                                     

Our article in F&S:

Ulrich Heck, Martin Becker

Customized solvers optimize filtration device design, Filtration and Separation Oct 2016, pdf-Dokument

Ulrich Heck, Martin Becker

Macroscopic filter modelling based on computational fluid dynamics (CFD)

FILTECH-Conference 2018, Powerpoint

Ulrich Heck, Martin Becker

Multi-scale filtration process modelling based on Euler-Lagrange approaches including fluid-structure interactions

Nafems Konferenz Bamberg, 2018, pdf

Macro-Scale modelling: Filter plant with more than 1000 individual elements considering the continuous flow shift caused by clogged filters

Meso-Scale modelling: Pleated filter with particle penetration in media and cake build-up

Fully transient FSI-coupling wiht preCICE for OpenFOAM/CalculiX


Beside the own static FSI coupling between OpenFOAM® and CalculiX CastNet supports the fully transient FSI coupling with preCICE:

For more information (set-up, benchmarks, examples) please click here.

Ulrich Heck, Martin Becker

A flexible approach for meso-scale filtration modelling based on Open-Source CFD, FILTECH-Conference 2019, pdf-Paper