GROOVED BEARINGS LUBRICATED BLOOD

1. 血液润滑的基本方程由卡森公式推导出流体膜润滑的基本雷诺方程，该公式近似于血液的非牛顿粘度。表达式和图中给出了质量通量与压力梯度的关系，但没有推导出血液润滑的窄槽理论。基本形状的沟槽轴承的检查我提出的血液润滑的沟槽轴承，其结构是轴承外的血液不流入轴承内部，轴承内的损伤血液不泄漏到轴承外。研究了经血液润滑的槽形轴承的特性，确定了基本形状和轴承参数。在有限凹槽数的情况下，对轴承末端局部血流量进行了精确的数值分析。阐明了窄槽理论对精确有限槽数分析的结果几乎相同。上述数值分析中，由于血液在轴承内部破坏了血细胞，因此采用牛顿黏度。为了证实这一现象是否真实发生，本研究结束后，计划对带槽轴承进行血液润滑实验。本研究对该实验装置进行了设计。

1. Fundamental equation of the blood lubricationThe fundamental Reynolds equation of the fluid film lubrication is derived by Casson's formula by which the non-newtonian viscosity of the blood is approximated. The relation of the mass fluxes and the pressure gradient was shown in the expression and figure, but the Narrow Groove Theory on the blood lubrication was not derived.2. Examination of the grooved bearing of basic shapeThe grooved bearing which was proposed by me for the blood lubrication, has the structure that the blood outside the bearing does not flow in internally in the bearing and the hurt blood inside of the baering is not leaked besides the bearing. I examined the characteristics of the grooved bearing lubricated by blood and decided the basic shape and bearing parameters. The local blood flux at the end of bearing was examined by the precise numerical analysis on the case of finite grooves number. It was clarified that the Narrow Groove Theory gives the almost same results to the precise finite grooves number analysis.3. Example of designing experiment deviceAbove numerical analysis on the grooved bearings lubricated by the blood assumes the newtonian viscocity, because blood corpuscles are destroysed inside the bearing. To confirm whether this phenomenon happens actually, the experiment on the grooved bearing lubricated by blood is planned after this resaerch ends. The design of this experimental device was performed in the present research.