Balance between Filtration and Strength in Porous Structure

Su, Xinxin

4. term

Energy Engineering, Master

2010

78

Denne afhandling undersøger strømning gennem en porøs filterplade for at forstå, hvordan forskellige parametre – især pladetykkelse og antallet af interne strukturer – påvirker filterets ydeevne. Filteret er fremstillet af alumina (aluminiumoxid) og er den centrale komponent i et samlet filter‑pumpesystem. For filtre med varierende parametre blev LMH (liter per kvadratmeter per time, et mål for gennemstrømningshastighed) beregnet manuelt. Den mekaniske styrke af hver enhed blev desuden vurderet ved hjælp af ANSYS‑simulationer. Til sidst sammenlignes de manuelle beregninger med CFD (computational fluid dynamics)‑simulationer samt med et massivt (uden indre kanaler) prøveemne. Resultaterne viser, at effektiv og velovervejet etablering af hulrum eller kanaler inde i den porøse plade er en vigtig metode til at øge permeatet, dvs. den mængde væske der passerer gennem filteret.

This thesis examines flow through a porous filter plate to understand how key parameters—especially plate thickness and the number of internal structural features—affect filter performance. The filter is made of alumina (aluminum oxide) and serves as the core component of an integrated filter‑pump system. For filters with different parameter settings, LMH (liters per square meter per hour, a measure of flux) was estimated by hand calculations. The mechanical strength of each unit was also evaluated using ANSYS simulations. Finally, manual calculations were compared with CFD (computational fluid dynamics) simulations and with a solid sample (without internal channels). The results indicate that thoughtfully designing cavities or channels inside the porous plate is an important way to increase permeate, i.e., the amount of liquid that passes through the filter.

[This abstract was generated with the help of AI]

balance ; strength ; filtration ; porous

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