Fluidics - Particle Orientation and Deformation
“a: Native human erythrocytes near the margin of the core stream of a short tube (orifice).  The cells are uniformly oriented and elongated by the hydrodynamic forces of the inlet flow.
b: In the turbulent flow near the tube wall, the cells are deformed and disoriented in a very individual way. v>3 m/s.”
Image fromV. Kachel, et al. – Melamed Chapt. 3
[RFM]