Niimi H, Sugihara M
Biorheology. 1982;19(1/2):129-36. doi: 10.3233/bir-1982-191-215.
Blood rheology at a stagnation point is studied in views of microhemorheology. Special emphasis is put on the effect of both non-Newtonian and unhomogeneous properties of blood on the fine structure of blood flow impinging on the wall. It is shown that "non-flow" region exists just at the stagnation point due to the non-Newtonian viscosity when its yield stress is large enough, compared with the viscous stress far from the wall. When the yield stress becomes negligibly small, RBC and plasma behave individually near the stagnation point; RBC is deviated from the plasma streamline and impinges on the wall. Finally, a microhemorheological factor of legional metabolic disorder is discussed on basis of the fine structure near a stagnation point.
从微观血液流变学的角度研究了驻点处的血液流变学。特别强调了血液的非牛顿性和非均匀性对冲击壁面的血流精细结构的影响。结果表明，当屈服应力足够大时，由于非牛顿粘性，在驻点处存在“非流动”区域，与远离壁面的粘性应力相比。当屈服应力变得可以忽略不计时，红细胞和血浆在驻点附近分别表现；红细胞偏离血浆流线并冲击壁面。最后，基于驻点附近的精细结构讨论了局部代谢紊乱的微观血液流变学因素。
