Investigation of Taylor flow in microchannels

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Supervisor:
Dr. Ender Ferenc
Department of Electron Devices

My final year's project deals with the so called Taylor flow, as a special case of segmented flow in microchannels. Taylor flows are two phase flows where the liquid phase consists of slugs that are separated by the bubbles formed by the gaseous phase. This flow type is widely utilized in Lab-on-a-Chip devices, because the discrete slugs can act as microreactors. These microreactors can contain isolated chemical reactions. The thermodynamic properties of such flows are investigated using CDF methods. A chemical reaction in a Taylor flow simulated. The methods used in these simulations are based on state of the art literature.

Based on the physics of microfluidics a deeper insight is gained on generating Taylor flows, and the methods used in literature are presented. Taylor flow is generated experimentally, and CDF simulations of two geometries of Taylor flow generating devices are run. Based on the results of our experiments and simulations an improved layout for a microfluidic chip is introduced.

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