Date of Award

Fall 2023

Document Type

Open Access Thesis

Department

Mechanical Engineering

First Advisor

Guiren Wang

Abstract

Microfluidic systems have a wide range of applications, including biomedical devices, lab-on-a-chip technologies, and aerospace propulsion. Understanding and quantifying the slip flow phenomenon in these microscale and nanoscale channels is of paramount importance for precise control and optimization of fluidic processes. Our study presents a novel approach to directly measure the velocities in a microchannel using Laser Induced Fluorescence Photobleaching Anemometer (LIFPA) and Travel Time After Photobleaching Velocimetry (TTAPV). In this experimental study, microchannels with micrometer dimensions were used, and slip flow conditions controlled. The LIFPA-TTAPV approach was applied to measure slip velocities in the near wall regime, providing accurate and direct quantification of slip at the fluid-solid interface. This innovative combination offers a powerful tool for researchers and engineers to investigate slip flow in microfluidic environments accurately. The obtained data can help the design and optimization of microfluidic devices, as also manipulate the flowrates and eventually the critical shear rate. This would enhance our understanding of fluid behavior at small scales, and contribute to advancements in fields such as aerospace, biomedical engineering, and nanotechnology.

Rights

© 2024, Malhar Prasad Joshi

Download

Share

COinS