Design and testing of a couette-flow system with rotating outer cylinder

• Main Authors: Bo-Jun Tzeng, 曾博駿
• Other Authors: Po-Chen Lu
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/09308799368315823279

碩士 === 淡江大學 === 水資源及環境工程學系碩士班 === 96 === Various types of artificial heart and ventricular assist devices can produce turbulent flow and larger shear stress than natural heart to damage red blood cells and cause some problems like hemolysis and thrombus. It is important to study how much shear stress can induce blood damage to improve better design of artificial organs. The purpose of this study is to design a circular couette-flow system with rotating outer cylinder and test if its flow field stable or not. The tested liquid is distilled water and 36% of the aqueous glycerin mixed with 64% of the distilled water by volume. The radius of outer cylinder of this concentric cylinder system is 30.1mm and gaps are 0.1mm and 0.3mm to test 4 kinds of flow field with different Taylor number which are 1000, 3000, 5000 and 10000. The result showed that this circular couette-flow is stable, uniform and doesn`t produce Taylor vortex. This flow field can be the use of Hemolysis research.