20.500.12556/RUL-160352 Vpliv geometrije mikromešalnika s poševnimi utori na učinkovitost mešanja The impact of the geometry of a slanted groove micromixer on mixing efficiency Mikroreaktorji so pretočni sistemi z majhnimi kanali za nadzor pretoka tekočin. Ključni del teh sistemov je mikromešalnik, ki učinkovito meša tekočine na mikronivoju. V magistrski nalogi je predstavljena optimizacija geometrije pasivnega mikromešalnika s poševnimi utori. Zasnovali smo nove oblike utorov in ovrednotili njihovo učinkovitost mešanja s CFD simulacijami, ki smo jih validirali glede na eksperimentalne rezultate iz literature. Kot najboljši dizajn se je izkazala geometrija utora z zaokrožitvami na obeh straneh. S pomočjo aditivnih tehnologij in mehkega ulivanja PDMS polimera smo izdelali prototip najboljšega dizajna. Eksperimentalna validacija je pokazala dobro ujemanje tokovnega vzorca s simuliranim tokovnim profilom. Microreactors are flow systems with small channels designed to control fluid flow. A key component of these systems is the micromixer, which efficiently mixes fluids at the micron level. This master's thesis presents the optimization of the geometry of a passive slanted groove micromixer. We designed new groove shapes and evaluated their mixing efficiency using CFD simulations, which we validated against experimental results from the literature. The best design was found to be the groove geometry with roundings on both sides. Using additive technologies and soft casting of the PDMS polymer, we fabricated a prototype of the best design. Experimental validation showed that the flow pattern matched the simulated flow profile. mikromešalniki optimizacija geometrije računalniška dinamika tekočin aditivne tehnologije eksperimentalna validacija micromixers geometry optimization computational fluid dynamics additive manufacturing experimental validation true false false Slovenski jezik Angleški jezik Magistrsko delo/naloga 2024-08-27 08:31:23 2024-08-27 08:31:27 2024-12-13 12:29:15 0000-00-00 00:00:00 2024 0 0 XXII, 93 str. 2024 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.646.7:532.5:621.79(043.2) 263566 218999043 34924.pdf 34924.pdf 1 A080F32CA5B67224CD4631B2A4925218 a941d2027d79856a0fa63bd7f8e97b322ca47a952514a756893a4251824fd647 c40611d4-643d-11ef-8f74-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=188984 Fakulteta za strojništvo 0 0 0