• Corpus ID: 244714711

Shape dynamics of a red blood cell in Poiseuille flow

@inproceedings{Agarwal2021ShapeDO,
  title={Shape dynamics of a red blood cell in Poiseuille flow},
  author={Dhwanit Agarwal and George Biros},
  year={2021}
}
We use numerical simulations to study the dynamics of red blood cells (RBCs) in unconfined and confined Poiseuille flow. Previous numerical studies with 3D vesicles have indicated that the slipper shape observed in experiments at high capillary number can be attributed to the bistability due to the interplay of wall push and outward migration tendency at higher viscosity contrasts. In this paper, we study this outward migration and bistability using numerical simulations for 3D capsules and… 

References

SHOWING 1-10 OF 40 REFERENCES
Red blood cell deformation in microconfined flow
In this work, we report on a systematic fluidodynamic investigation of red blood cell (RBC) suspensions flowing in microcapillaries with diameters comparable to the cell size in vitro. By using
Shape transitions of fluid vesicles and red blood cells in capillary flows.
  • H. Noguchi, G. Gompper
  • Physics, Engineering
    Proceedings of the National Academy of Sciences of the United States of America
  • 2005
TLDR
The dynamics of fluid vesicles and red blood cells in cylindrical capillary flow is studied by using a three-dimensional mesoscopic simulation approach, and slipper-like shapes of the RBC model are observed around the transition velocities.
Deformation and dynamics of red blood cells in flow through cylindrical microchannels.
TLDR
Mesoscale hydrodynamic simulations are employed to predict the phase diagram of shapes and dynamics of RBCs in cylindrical microchannels, which serve as idealized microvessels, for a wide range of channel confinements and flow rates.
Stable shapes of three-dimensional vesicles in unconfined and confined Poiseuille flow
We use numerical simulations to study the dynamics of three dimensional vesicles in unconfined and confined Poiseuille flow. Previous numerical studies have shown that when the fluid viscosity inside
Flow-Induced Transitions of Red Blood Cell Shapes under Shear.
TLDR
Using two different simulation techniques, a state diagram is constructed of RBC shapes and dynamics in shear flow as a function of shear rate and viscosity contrast and it is shown that two different kinds of membrane buckling trigger the transition between subsequent RBC states.
Dynamics of a large population of red blood cells under shear flow
An exhaustive description of the dynamics under shear flow of a large number of red blood cells in a dilute regime is proposed, which highlights and takes into account the dispersion in cell
Complexity of vesicle microcirculation.
TLDR
A general scenario of how and why vesicles adopt their morphologies and dynamics among several distinct possibilities is provided and potentially points to nontrivial RBCs dynamics in the microvasculature.
Micro-macro link in rheology of erythrocyte and vesicle suspensions.
TLDR
The viscosity of RBC suspensions reveals a previously unknown signature that may be used to detect blood flow disorders linked to pathologies that affect RBC shape and mechanical properties and opens future perspectives on setting up new diagnostic tools, with great efficiency even at very low hematocrit.
Full dynamics of a red blood cell in shear flow
TLDR
It is shown that contrary to common belief, when red blood cells flip into the flow, their orientation is determined by the shear rate, and the biconcave red cell shape is highly stable under moderate shear stresses, and is interpreted in terms of stress-free shape and elastic buckling.
...
1
2
3
4
...