(237e) Holographic Characterization of Three-Dimensional Velocity Fields in Viscoelastic Flows
AIChE Annual Meeting
2018
2018 AIChE Annual Meeting
Engineering Sciences and Fundamentals
Poster Session: Fluid Mechanics
Monday, October 29, 2018 - 3:30pm to 5:00pm
Mapping the three-dimensional (3D) velocity fields in viscoelastic flows is useful for characterizing fluid rheology, understanding the spatial structure of elasticity-driven instabilities and obtaining insights into phenomena such as slip and shear-banding. In this study, we use digital holography microscopy to quantify the 3D velocity profiles due to flow of polymeric fluids in linear microchannels, contraction flows and serpentine channels. We discuss our experimental procedures and data analysis routines to obtain robust velocimetry data.