Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session M18: Fluids VII
8:00 AM–10:48 AM,
Wednesday, March 8, 2023
Room: Room 210
Sponsoring
Unit:
DFD
Chair: Binan Gu, Worcester Polytechnic Institute
Abstract: M18.00006 : Towards controlling the rheological properties of suspension systems using fully differentiable unsteady Navier-Stokes flow solvers*
9:00 AM–9:12 AM
Presenter:
mohammed alhashim
(Harvard University)
Authors:
mohammed alhashim
(Harvard University)
Michael P Brenner
(Harvard University)
properties of complex fluids. While the study of suspension flows started more than 100
years ago, we still do not know whether it is possible to precisely
control rheological response by tuning particle types and properties. We show how the recent advances in automatic
differentiation could open the doors for seamless targeting of desired rheological properties. As
a first demonstration, we implement Brinkman penalization method in JAX-CFD code for
simulating non-interacting noncolloidal particles suspended in a Newtonian fluid. By directly
differentiating through the model, we solve multiple canonical optimization problems at low
and moderate Reynolds number flows for both dilute suspensions and structured
porous media. We discuss how such a method provides a generalizable foundation for reverse
engineering of intricate suspension flow problems.
*Mohammed is funded by Saudi Aramco Research & Development Center through the OOC internship assignment.
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