The effect of compressibility on the behaviour of filter media

@article{Kory2019TheEO,
  title={The effect of compressibility on the behaviour of filter media},
  author={Jakub Kory and A U Krupp and Colin P. Please and Ian M. Griffiths},
  journal={arXiv: Fluid Dynamics},
  year={2019}
}
A filter comprises porous material that traps contaminants when fluid passes through under an applied pressure difference. One side-effect of this applied pressure, however, is that it compresses the filter. This changes the permeability, which may affect its performance. As the applied pressure increases the flux of fluid processed by the filter will also increase but the permeability will decrease. Eventually the permeability reaches zero at a point in the filter and the fluid flux falls to… 

Figures from this paper

Optimising Dead-End Cake Filtration Using Poroelasticity Theory
Understanding the operation of filters used to remove particulates from fluids is important in many practical industries. Typically the particles are larger than the pores in the filter so a cake
Flow and fouling in elastic membrane filters with hierarchical branching pore morphology
Filtration is widely used in industry; therefore, prediction of filtration efficacy and analysis of filter performance are essential. Real membranes have complex internal geometry: pores inside the

References

SHOWING 1-10 OF 23 REFERENCES
Understanding how porosity gradients can make a better filter using homogenization theory
Filters whose porosity decreases with depth are often more efficient at removing solute from a fluid than filters with a uniform porosity. We investigate this phenomenon via an extension of
Flow-induced compaction of a deformable porous medium.
TLDR
All the experimental results display a distinct and repeatable hysteresis: the flux through the material for a particular applied pressure drop is appreciably lower when the pressure has been decreased to that value compared to when it has been increased to the same value.
Fluid-Driven Deformation of a Soft Granular Material
Compressing a porous, fluid-filled material drives the interstitial fluid out of the pore space, as when squeezing water out of a kitchen sponge. Inversely, injecting fluid into a porous material can
A mathematical model of water flux through aortic tissue.
Steady Flow in Porous, Elastically Deformable Materials
The steady, one-dimensional flow of an incompressible fluid through a deformable porous material is studied theoretically and experimentally. The theoretical model is essentially that of Biot.
Large deformations of a soft porous material
Compressing a porous material will decrease the volume of the pore space, driving fluid out. Similarly, injecting fluid into a porous material can expand the pore space, distorting the solid
Poroelasticity equations derived from microstructure
Equations are derived which govern the linear macroscopic mechanical behavior of a porous elastic solid saturated with a compressible viscous fluid. The derivation is based on the equations of linear
Processing and Properties of Graded Ceramic Filters
A new processing route for high-performance graded ceramic filters is presented. The direct foaming process is based on the transition of a surfactant-stabilized alkane dispersion in a stabilized
...
1
2
3
...