(490h) Non Newtonian Fluid Flow through Converging Diverging Channel
AIChE Annual Meeting
2021
2021 Annual Meeting
Engineering Sciences and Fundamentals
Microfluidic and Microscale Flows: Multiphase and Fields
Wednesday, November 10, 2021 - 2:15pm to 2:30pm
The main objective of this work is to create a comprehensive model and code using Lattice Boltzmann Modelling to simulate the flow of shear-thickening power-law fluids in Converging-Diverging channels. We study and compare different flow characteristics such as velocity, strain rate and pressure drop.
Flow of shear-thickening power-law fluid in a converging-diverging channel was investigated using Lattice Boltzmann Modelling. A code was developed using single relaxation time (SRT-LBM) and incorporating non-Newtonian fluid flow. Pressure drop in a converging-diverging channel was found to increase with increase in the angle of the tube. Higher pressure drop was observed for higher power-index value with similar effective viscosity. Finally, a variable-n power-law fluid flow was simulated, and its flow characteristics were compared with its single-n constituents. Higher strain rate was observed in a variable-n fluid that a single-n power-law fluid. Velocity profile characteristics for a variable-n fluid was observed to be a mixture of its constituent fluids velocity profiles.