Representative domain size study on simulated 3D fiber systems

P. Easwaran*, K. Schladitz, Fraunhofer Institute for Industrial Mathematics; F. Hahn, M. Lehmann, Mann+Hummel GmbH; C. Redenbach, University of Kaiserslautern, Germany

Fibrous synthetic filter media are used for various tasks in automotive applications, in particular for filtration of air and oil. The microstructure of the filter media highly influences the macroscopic properties of the filter element such as pressure drop, efficiency, etc.

Effective numerical simulation is required to examine the performance of the filter elements in the early design phase before industrial production. Numerical simulations take the microstructure model as an initial configuration. Moreover, a realistic microstructure model for a filter element is needed to analyze how the microstructure affects its physical properties. A realistic 3D stochastic model of the fiber system with fiber interaction for the non-woven filter media is developed in [1].

Since numerical simulations need extensive computation power, it is important to find the representative domain size of the generated microstructure for a required filter property. In this paper, a simulation and a statistical approach are used to estimate the representative domain size of the microstructure model from [1]. Precisely, the representative domain size with respect to the packing density, the pore size distribution, and the pressure drop are studied. ...

Session: G10 - Short Oral + Poster Presentations
Day: 12 October 2016
Time: 14:45 - 16:45 h