Application and results: filter fiber engineering

Abstract Chapter 8 brings concrete examples of solver application and demonstrates how filter fiber engineering might look like in the near future. Thus the chapter provides examples of the capabilities of the Eulerian-Lagrangian solver in terms of practical applications. In particular it is demonstrated how the software provides insight into qualitative and quantitative aspects of process parameter behavior, over filter lifetime where two of the most interesting results to be extracted from the calculations are filter fiber efficiency and particle penetration depth curves. Sub-chapters 8.1 to 8.4 are based on such typical examples of solver application which all involve taking several, microscopic, digitally reconstructed portions out of a filter fiber sample in order to conduct deposition and penetration analysis for the entire range of relevant particle sizes. The results are then averaged in order to obtain an idea of the basic particle deposition characteristic of the fiber.