A 2D model of a blood vessel under rolling manipulation ( RM ) is presented. The numerical simulations of blood flow are based on lattice Boltzmann method. It is found that RM can increase the blood flow. Different RM frequency () has different influence on flow. When the frequency is equal to the pulsing flow frequency,the average flow over one period is the largest. Streamlines diagrams in different time when are given. Vortexes can be seen in the region under the stenosis. The distributions of streamlines change periodically.

A rolling massage model of Lattice Boltzmann method is proposed to study the blood flow in the blood vessels.The rolling massage is implemented in a sinusoidal manner.No pressure is applied on the inlet or the outlet of the vessel.The evolvement of the flow field and the physical mechanism of its formation were analyzed.

To study two-dimensional red blood cells deforming in a shear Bow with the membrane nonuniform on the rigidity and mass, the membrane is discretized into equilength segments. The fluid inside and outside the red blood cell is simulated by the D2Q9 lattice Boltzmann model and the hydrodynamic forces exerted on the membrane from the inner and outer of the red blood cell are calculated by a stress-integration method. Through the global deviation from the curvature of uniform-membrane, we find that when the membrane is nonuniform on the rigidity, the deviation first decreases with the time increases and implies that the terminal profile of the red blood cell is static. To a red blood cell with the mass nonuniform on the membrane, the deviation becomes more large, and the mass distribution affects the profile of the two sides of the flattened red blood cell in a shear flow.

The movement of red blood cells in the microcirculation was studied in this paper based on the lattice Blotzmann method.The capillary was simulated by elastic tube while the two-dimensional red cell was simplified as a closed elastic membrane—the tension of it was larger than its bending.The fluid inside and outside the red blood cell was treated as incompressible Newtonian fluid.In our simulation,curved boundary condition was implemented on the membrane and capillary.The hydrodynamic force exerted on the membrane was evaluated by stress-integration.Through the elastic tube under the periodic deformation,promoting blood circulation and removing blood stasi in the Traditional Chinese Medical Massage(TCMM) and microcirculation were discussed.