The FilterDict®-Media module can determine:
- Initial Filter Efficiency:
FilterDict determines the filter efficiency and most penetrating particle size (MPPS) of a filter medium by tracking particles through a 3D filter structure.
The simulation of the particle movement can include interception, inertial impaction, Brownian motion and electrostatic attraction. Various physical models are available to model the contact of a particle with the filter medium (Caught on first touch, Van der Waals forces / Hamaker constant, Sieving) and allow to model different filtration regimes.
User defined functions allow full control of these model parameters.
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Initial Pressure Drop:
Using the flow solvers from the FlowDict module, FilterDict determines the initial pressure drop over the filter media. Fast flow rates are modeled with the Navier-Stokes, slow flow rates with Stokes equation. - Filter Life Time and Capacity:
FilterDict can simulate the clogging of a filter in a Single Pass or Multi Pass experiment. Pressure drop evolution over time and the dust holding capacity is determined. The simulation covers the full range from depth to cake filtration.
FilterDict®-Media features
With the FilterDict® module, filter efficiency computations requiring a single flow field computation can be achieved for realistic nonwoven models (300 x 300 x 600 computational cells) in a few hours. Filter life time simulations may take several days due to the need for re-computing the flow fields.
The prediction of filter efficiency and pressure drop evolution by FilterDict has been extensively validated in a variety of industrial and scientific research projects.
The FilterDict predictions agree with measurements to within 10-20%.
FilterDict is the only software on the market providing this functionality on standard hardware (16GB 64bit Windows or Linux computers).
FilterDict® is a registered trademark of Math2Market® GmbH.
Particle filtration in a FiberGeo fibre structure
Particulate soot filtration in a GrainGeo ceramic filter model
Particulate filtration in an imported air filter structure - imported with ImportGeo-Vol
Filter lifetime simulation in the air filter medium
Particulate filtration in an imported oil filter structure - imported with ImportGeo-Vol
Simulation of filter lifetime in the oil filter medium
Particulate soot filtration in a GrainGeo ceramic filter model
Examples of FilterDict®-Media applications
The FilterDict®-Media is particularly well suited to:
- Simulate aerosol filtration in a nonwoven filter.
- Simulate soot filtration in a Diesel Particulate Filter (DPF) or Gasoline Particulate Filter (GPF).
- Simulate an oil filtration multi-pass test bench.
- Simulate micronic particle filtration and clogging phenomena in microfluidic devices.
Additional modules needed?
- The GeoDict Base package is needed for basic functionality.
- FilterDict-Media works on 3D (micro-) structure models that can either be a segmented 3D image (microCT-scan, FIB-SEM) imported with ImportGeo-VOL or a 3D structure model created with one of the GeoDict modules for Digital Material Design, e.g. FiberGeo for nonwovens, GrainGeo for granular or sintered structure models or sphere-packings, or FoamGeo for foams.
- FilterDict-Media needs the solvers of FlowDict for computing flow fields as well as the pressure drops or mean velocities.