21 research outputs found
IMECE2009-12691 MECHANISM OF CELL TRANSPORT IN A MICROCHANNEL WITH BINDING BETWEEN CELL SURFACE AND IMMOBILIZED BIOMOLECULES
ABSTRACT Recent trends in micro and it is demonstrated that, the bond density and contact area have no effect on the cell velocity behavior beyond the maximum bond density
Inertial Rise in Short Capillaries
In this fluid dynamics video we show capillary rise experiments with diethyl
ether in short tubes. The height of each short tube is less than the maximum
height the liquid can achieve, and therefore the liquid reaches the top of the
tube while still rising. Over a narrow range of heights, the ether bulges out
from the top of the tube and spreads onto the external wall.Comment: Includes 2 videos for the Gallery of Fluid Motion in the 2013
American Physical Society Division of Fluid Dynamics Annual Meetin
Numerical study of droplet dynamics in a polymer electrolyte fuel cell gas channel using an embedded Eulerian-Lagrangian approach
An embedded Eulerian-Lagrangian formulation for the simulation of droplet dynamics within a polymer
electrolyte fuel cell (PEFC) channel is presented. Air is modeled using an Eulerian formulation, whereas
water is described with a Lagrangian framework. Using this framework, the gas-liquid interface can be
accurately identified. The surface tension force is computed using the curvature defined by the boundary
of the Lagrangian mesh. The method naturally accounts for material property changes across the
interface and accurately represents the pressure discontinuity. A sessile drop in a horizontal surface, a
sessile drop in an inclined plane and droplets in a PEFC channel are solved for as numerical examples and
compared to experimental data. Numerical results are in excellent agreement with experimental data.
Numerical results are also compared to results obtained with the semi-analytical model previously
developed by the authors in order to discuss the limitations of the semi-analytical approach.Peer ReviewedPostprint (published version
Numerical study of droplet dynamics in a polymer electrolyte fuel cell gas channel using an embedded Eulerian-Lagrangian approach
An embedded Eulerian-Lagrangian formulation for the simulation of droplet dynamics within a polymer
electrolyte fuel cell (PEFC) channel is presented. Air is modeled using an Eulerian formulation, whereas
water is described with a Lagrangian framework. Using this framework, the gas-liquid interface can be
accurately identified. The surface tension force is computed using the curvature defined by the boundary
of the Lagrangian mesh. The method naturally accounts for material property changes across the
interface and accurately represents the pressure discontinuity. A sessile drop in a horizontal surface, a
sessile drop in an inclined plane and droplets in a PEFC channel are solved for as numerical examples and
compared to experimental data. Numerical results are in excellent agreement with experimental data.
Numerical results are also compared to results obtained with the semi-analytical model previously
developed by the authors in order to discuss the limitations of the semi-analytical approach.Peer Reviewe