Theoretical optimisation of the side-wall of micropillar array columns using computational fluid dynamics
2010
Vangelooven, Joris | Desmet, Gert
The present study provides an overview of the ideal side-wall position in micro-pillar array columns for the case of semi-embedded side-walls. The position has been determined using computational fluid dynamics simulations of the flow field in flow domains with different side-wall shifts. Optimal side-wall shift values are presented for a wide range of shapes (cylinders, and diamonds and hexagons with different aspect ratios) and packing densities. Simple linear correlations that allow calculating the optimised side-wall geometries for the different considered variety of shapes and packing densities could be established. Interestingly, only two correlations are needed to represent all investigated cases: one correlation for all diamonds, and one correlation for the cylinders and all hexagons. Compared to the case of a flat side-wall, the minimal feature size on the mask can be increased by a factor of 2.5 in the case of cylindrical pillar bed with external porosity ɛ =0.4, implying that that much smaller pillar diameters can be used in the bulk of the bed before the minimal feature size on the mask falls below the lithography resolution.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل National Agricultural Library