numerical simulation of fluid flow in an elastic tube

• Main Authors: chen, chi-yen, 陳志彥
• Other Authors: lee denz
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/25942612792174772415

碩士 === 國立成功大學 === 航空太空工程學系 === 84 === There are considerable evidences that hemodynamics may play a role in thedevelopment and progression of arterial diseases. Arterial walls in a cardio-vascular system are flexible,and its elasticity determines the wavespeed in a tube. In addition , it reduces the pressure loss and the turbulence intensity.Detailed analysis of the pulsatile flow in elastic model may provide us ainsight for the possible role of hemodynamics in the initiation and pro-gression of vascular diseases. In this thesis, we develop an effective and reliable numerical calculationprocedure based on finite volume method and space conservation law to simulatefluid flow in an elastic tube. Based on this calculation procedure, we invest-igate the effect of arterial elastivity on wall shear stress and flow resis-tance in pulsatile flow field. Various parameters including degree of wallmotion, frequence, flow wavwform and phase angle were investigated.The resultsare compared with the rigid wall model.