2013 Fiscal Year Final Research Report
Effect of the rheological properties of the blood and the surface roughness of the mechanical seals for rotary blood pumps
| Project/Area Number |
23560171
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Waseda University |
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Principal Investigator |
TOMIOKA Jun 早稲田大学, 理工学術院, 教授 (40217526)
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| Co-Investigator(Kenkyū-buntansha) |
NORIFUMI Miyanaga 関東学院大学, 理工学部, 講師 (00547060)
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| Project Period (FY) |
2011 – 2013
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| Keywords | メカニカルシール / レオロジー / 表面粗さ |
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| Research Abstract |
The effect of the immobilization of red blood cells on rheological properties and hemolytic characteristics was clarified.
Sealing properties of a mechanical seal for blood using an electrical conduction meter and an ion chromatography were clarified.
An average flow model to predict the lubrication characteristics of mechanical seals with parallel sealing faces is proposed. The present model determines the flow factors considering the two-dimensional flow under the similar operating conditions of mechanical seals. The correction factor for the expected hydrodynamic pressure generated by the surface roughness is also defined. The results are compared with those based on the Patirs average flow model and show that the present model can be effective for the analysis of the lubrication characteristics of mechanical seals with parallel sealing faces.
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