Modeling Complex Fluids and Gels for Biological Applications

University of Utah
May 4-6, 2017

Final Program

Thursday, May 4th
8:30 - 8:50

Registration and Arrival

8:50 - 9:00

Welcome and Opening Remarks

9:00 - 9:45

Henry Fu, University of Utah

Helicobacter pylori in gels and fluids

9:45 - 10:15

Thomas Fai, Harvard University

Simulation and modeling of wall-induced migration: from single cells to suspensions

10:15 - 10:45

David Stein, Simons Foundation

Rheology and properties of aligned suspensions of semi-flexible fibers: results from a simple continuum model based on local slender body theory.

10:45 - 11:00 Coffee Break
11:00 - 11:30

Christopher Rycroft, Harvard University

The reference map technique for simulating complex materials

11:30 - 12:00

Isaac Klapper, Temple University

Length Scales in Growing Fluids

12:00 - 12:45

David Saintillan, University of California San Diego

From bacteria to chromosomes: hydrodynamic self-organization of biological active matter

12:45 - 2:15 Lunch and poster session
2:15 - 2:45

Jim Keener, University of Utah

The Dynamics of Fibrin Gel Formation

2:45 - 3:15

Owen Lewis, University of Utah

Trust your gut: Maintenance of the pH gradient in the gastric mucus layer

3:15 - 3:45

Paula Vasquez, University of South Carolina

Dynamical modeling of phase separation in the yeast nucleus

3:45 - 4:00 Coffee Break
4:00 - 4:30

James Feng, University of British Columbia

A multi-cellular model for the spontaneous collective migration of neural crest cells

4:30 - 5:00

Thomas Powers, Brown University

Mechanics of Colloidal Membranes

6:45 - 9:00 Conference Banquet: Himalayan Kitchen, 360 South State Street, directions
    6:45-7:30: Appetizers
    7:30-9:00: Dinner
Friday, May 5th
9:30 - 10:15

Eric Shaqfeh, Stanford University

Vesicles and Red Blood Cells in Channel and Tube Flows: Extra Pressure Drop and Migration

10:15 - 10:45

Sarah Olson, Worcester Polytechnic Institute

Effect of Fluid Resistance on Sperm Motility

10:45 - 11:00

Coffee Break

11:00 - 11:30

Paulo Arratia, University Pennsylvaia

Life in Complex Fluids

11:30 - 12:00

Robert Guy, University of California Davis

Flagellar swimming in viscoelastic fluids: Role of fluid elastic stress revealed by simulations based on experimental data

12:00 - 12:45

Becca Thomases, University of California Davis

The role of body flexibility in stroke enhancements for finite-length undulatory swimmers in viscoelastic fluids

12:45 - 12:50 Group Photo
12:50 - 2:15 Lunch and poster session
2:15 - 2:45

Saverio Spagnolie, University of Wisconsin

Deformable bodies in anisotropic fluids

2:45 - 3:15

Jian Du, Florida Institute of Technology

A Two-phase Mixture Model of Platelet Aggregation

3:15 - 3:45

Christel Hohenegger, University of Utah

Probing viscoelastic liquids as an inverse problem

3:45 - 4:00 Coffee Break
4:00 - 4:30

Aleksandar Donev, New York University

Fast Brownian Dynamics for Colloidal Suspensions

4:30 - 5:00

Gwynn Elfring, University of British Columbia

An active particle in a complex fluid

Saturday, May 6th
9:15 - 9:45

Grady Wright, Boise State University

Meshfree methods for numerically solving PDEs on surfaces

9:45 - 10:15

Varun Shankar, University of Utah

A high-order meshfree framework for solving PDEs on irregular domains and surfaces

10:15 - 10:45

Jia Zhao, University of North Carolina at Chapel Hill

A Multiphase Complex Fluids Model for Cytokinesis of Eukaryotes

10:45 - 11:00

Coffee Break

11:00 - 11:45

Michael Graham, University of Wisconsin

Theory of Margination in Blood and other Multicomponent Suspensions

Blood is a suspension of objects of various shapes, sizes and mechanical properties, whose distribution during flow is important in many contexts. Red blood cells tend to migrate toward the center of a blood vessel, leaving a cell-free layer at the vessel wall, while white blood cells and platelets are preferentially found near the walls, a phenomenon called margination that is critical for the physiological responses of inflammation and hemostasis. Additionally, drug delivery particles in the bloodstream also undergo margination – the influence of these phenomena on the efficacy of such particles is unknown. In this talk a mechanistic theory is developed to describe segregation in blood and other confined multicomponent suspensions. It incorporates the two key phenomena arising in these systems at low Reynolds number: hydrodynamic pair collisions and wall-induced migration. The theory predicts that the cell-free layer thickness follows a master curve relating it in a specific way to confinement ratio and volume fraction. Results from experiments and detailed simulations with different parameters (flexibility of different components in the suspension, viscosity ratio, confinement, among others) collapse onto the same curve. In simple shear flow, several regimes of segregation arise, depending on the value of a "margination parameter" M. Most importantly, there is a critical value of M below which a sharp "drainage transition" occurs: one component is completely depleted from the bulk flow to the vicinity of the walls. Direct simulations also exhibit this transition as the size or flexibility ratio of the components changes. Results are presented for both Couette and plane Poiseuille flow. Experiments performed in the laboratory of Wilbur Lam indicate the physiological and clinical importance of these observations.
12:15 - 2:00 Lunch

Last Updated -03/06/2017 17:26:07