淡江大學機構典藏:Item 987654321/52594
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 62797/95867 (66%)
造访人次 : 3729787      在线人数 : 630
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻


    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/52594


    题名: 紊流剪力流場中溶血效應的研究
    其它题名: The study of hemolysis in a turbulent shear flow
    作者: 嚴仁鴻;Yen, Jen-hung
    贡献者: 淡江大學水資源及環境工程學系碩士班
    盧博堅;Lu, Po-chien
    关键词: 溶血;噴射流;數位質點影像測速系統;雷諾應力;黏滯切應力;Hemolysis;jet flow;DPIV;Reynolds shear stress;viscous shear stress
    日期: 2010
    上传时间: 2010-09-23 17:58:07 (UTC+8)
    摘要: 由於血液流經人工器官時,紅血球受到非生理流況產生應力使其外膜破裂,釋放出血紅素到血漿中。而血漿中的自由血紅素是含有毒性的,會造成腎臟及其他器官的衰竭,因此在研發人工器官時,都不期望血球遭受到破壞而引發溶血。故本實驗利用噴射流來形成紊流場,流場量測則使用數位質點影像測速儀,得知流場的分佈,再將清洗過的血球置入流場中進行溶血實驗。雷諾應力及黏滯切應力常被用來估算溶血,因此引用過去學者所做的研究進行驗證的工作。雷諾應力跟隨Sallam[3]所做的實驗,驗證了雷諾應力值為400Pa時血球會遭受到破壞,但本實驗經過主軸平面的轉換後雷諾應力的閥值應為718Pa。而黏滯切應力則利用Sheng[31]與Jones[23]兩種方法進行分析,本實驗做出來的數據計算出來的黏滯切應力大小均符合Jones的研究結果。
    When blood passes through the artificial organ, membranes of red blood cells crack due to the shear stress generated by nonphysical flow condition, thus hemoglobin are released from red blood cells and flow into plasma. These free hemoglobin in plasma are toxic. They may cause kidneys or other organ failures. Therefore, under the research and development process of artificial organs, preventing the destruction of blood cells that can lead to hemolysis is certainly the top priority. For this reason, this study aims to create turbulence fields by means of a jet flow, and measure the distribution of flow field and turbulent stresses by using digital particle image velocimeter (DPIV). The washed porcine blood cells are then put into the flow field to do the hemolytic experiment. The thresholds of the Reynolds shear stress and viscous shear stress are usually put to use to measure the hemolysis. In comparision with previous researchers, this study well compare with that of Sallam and Hwang[1] measured the Reynolds shear stress in free turbulent jet flow and reported values of 400 N/m2 .However, in this study Reynolds shear stress is at 718 N/m2 after the shift between principal axis and plane. Moreover, The viscous shear stress is used Sheng[31] and Jones[23] are two ways to analyze the data from this experiment, the quantity of viscous shear stress confirm the results of Jones’s study.
    显示于类别:[水資源及環境工程學系暨研究所] 學位論文

    文件中的档案:

    档案 大小格式浏览次数
    index.html0KbHTML247检视/开启

    在機構典藏中所有的数据项都受到原著作权保护.

    TAIR相关文章

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈