PleatGeo Module

The PleatGeo module

The PleatGeo module is used to generate single filter pleats, with free-varying pleat form.
The filter medium of the pleat can be composed of multiple layers, which may exhibit different values of permeability. The modeled pleats can include supporting meshes and supporting weaves.

The design of novel filters fitting the userís requirements, e.g. achieving a decrease in pressure drop, is straightforward by changing as needed and quickly the pleat form and the support structures.

Model of a double-layer concatenated pleat, with outer netting support, created with the PleatGeo module

PleatGeo allows to model pleated filters without or with support structures. The inner and/or outer support structures can be weaves (plain or twill) or meshes. Many parameters of the support structures, like the wire diameter, can be varied at will.
Additionally, the shape of the pleat is freely modifiable and the media of the pleat can be made of multiple layers to which different permeabilities can be assigned.

  • Modelling of pleated air filter media
  • Modelling of pleated oil filter media

The computation of flow properties and filtration properties is of great interest for3D pleat structures. These properties can be computed with the following GeoDict modules:

Material properties Modules
Flow resistivity, permeability, and pressure drop FlowDict
Filter efficiency and filter life time FilterDict-Media und FilterDict-Element

Moreover, the 3D structures modelled with the PleatGeo module can be exported as 3D image (.raw), as surface triangulation (.stl) for CAD-programs, or as direct simulation in Fluent / Abaqus.