Nano Science and Technology Institute
Nanotech 2005 Vol. 1
Nanotech 2005 Vol. 1
Technical Proceedings of the 2005 NSTI Nanotechnology Conference and Trade Show, Volume 1
Chapter 10: Micro and Nano Fluidics Design and Phenomena

Applications of Topology Optimization in the Design of Micro- and Nanofluidic Systems

Authors:F. Okkels, L.H. Olesen and H. Bruus
Affilation:Technical University of Denmark, DK
Pages:575 - 578
Keywords:microfluidics, topology optimization, FEMLAB, design, cooling
Abstract:The material distribution method in topology optimization was developed in the late 1980ies for stiffness design of mechanical structures, and only recently the first steps have been taken towards implementing the method in fluidics. Topology optimization can be used to determine optimal fluidic networks with respect to some given objective for given constraints without requiring any prior knowledge of neither the shape nor the topology of the solution. We present a versatile high-level programming-language implementation of non-linear topology optimization, using the commercial software package FEMLAB. We have validated our method by studies of pure Navier-Stokes flow problems such as a fluid channel with maximal reverse velocity at a selected point, and a medium Reynolds number fluidic diode. Recently, we have extended our implementation to include other fields such as temperature and concentrations of solutes. We present results for optimization of a microfluidic cooling-device, which has applications for e.g. CPU cooling and micro heat-couplers. We also discuss the related problem of optimizing the efficiency of microreactors for exothermic chemical processes by optimizing the flow of cooling liquids in the walls of the reactor.
Applications of Topology Optimization in the Design of Micro- and Nanofluidic SystemsView PDF of paper
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