GeoDict for Filtration

Filtration

Filters are essential in industry and in everyday life, to preserve machine functionality and for protection against toxic and allergenic substances.
The demands on filter efficiency, selectivity, capacity, and filter lifetime increase constantly and highly specialized solutions are needed for every filtration application.

This is due to:

The complex interplay of material properties of the filter media
The arrangement and shape of fibers in the medium
The physical and chemical properties of the fluid being filtered
The characteristics of the particles in the fluid

The traditional way of designing, building, and testing filter prototypes is costly in time and resources.

HighlightImage — GeoDict for air-, gas-, and liquid-filtration simulations

GeoDict^® for filtration

Understanding and improving

Simulations with GeoDict help filter media makers and filter manufacturers understand and productively improve existing filter materials.

Specify novel filter media characteristics
Model filter media matching these specifications
Determine properties of filter media, such as:
- Grammage
- Largest through pore
- Multilayers
- Gradients
- Binder content, etc
Match computed properties to existing media by calibrating
Determine filtration properties of new media, including:
- Initial pressure drop
- Single pass and multi pass filter efficiency
- Filter capacity
Improve new filter media by varying thickness, fiber diameters, gradient and compression, etc.

Through computer simulations, new filter media and filter pleats are engineered by honing in on a few promising designs and restricting costly lab tests to these few designs.

2D-SEM View of air filter media model

3D model of air filter media after import und segmentation with ImportGeo

Flow through air filter media model with FlowDict

Air filter model loaded with particles (cake filtration) with FilterDict

2D-SEM View of oil filter media model

3D model of oil filter media

Flow through oil filter media model with FlowDict

Oil filter model with particles (depth filtration) with FilterDict

The GeoDict^® package for filtration

The GeoDict^® filtration package has been developed for the simulation of filtration processes. It includes interface tools to import and segment microCT and FIB/SEM data and material modeling modules to design 3D models from user-defined specifications, along with material property predictors to analyze them.

Simulated and computed parameters for improvement and design of filters in air, gas, and liquid filtration:

Nonwoven fabrics, woven fabrics, foams, sintered ceramics, membranes, pleats and support meshes, wire and plastic meshes
Media thickness, fiber diameters, fiber orientation, grammage, pore size distribution, bubble point, percolation path
Single-Pass and Multi-Pass Tests, diesel soot test dust, standard aerosol test dusts, standard test dusts
Initial pressure drop, pressure drop evolution, initial filter efficiency, fractional efficiencies, filter capacity, filter class, and MPPS
Particle movement and particle deposition in the filter media, filter clogging behavior, and cake filtration

Module recommendations
Interfaces	ImportGeo-Vol
Material design^*	FiberGeo	WeaveGeo	FoamGeo	GrainGeo	PleatGeo
Material analysis^*	FlowDict	FilterDict-Media	FilterDict-Element	PoroDict	MatDict

The traditional way of designing, building, and testing filter prototypes is costly in time and resources.

Understanding and improving

Through computer simulations, new filter media and filter pleats are engineered by honing in on a few promising designs and restricting costly lab tests to these few designs.

* The field of application determines the appropriate modules.

^* The field of application determines the appropriate modules.