Finite Element Analysis And Numerical Simulation Of An Elastic Tapered Vessel

Biofluid mechanics is the basis of mutual cross disciplines which integrates FluidMechanics with Biology and Medicine.It reveals some phenomena of life science accordingto the knowledge of fluid mechanics, then explores the law of life.Currently Biofluidmechanics mostly research physiological flow of the body,like the fluid dynamic problems inthe circulation system.As an adaptive method which study blood flow of humanbody,numerical simulation becomes more and more important.Applying the arbitrary Lagrange-Euler method analyses the velocity field and thepressure filed of an elastic tapered vessel in two dimensions. Under the assumption of smalltaper angle obtains the effects of blood flow in elastic vessels on the velocity and pressuredistribution, then compares these between no taper angel of blood vessels and rigid bloodvessels. The simulation results show that the velocity distribution and pressure distribution ofblood flow have small differences with the rigid and elastic properties of blood vessels, buthave a lot relationships with the size of tapered angle. When tapered angle becomes lager, thepressure changes of the amplitude becomes greater and the radial velocity changes of theamplitude becomes more and more significant, but does not affect the position of themaximum radial velocity distribution.Considering the actual blood vessels have taperedangle,although the angel is small,it has definitely influence and can’t be ignored.Therefore,itis feasible to carry out the numerical research on blood flow through the method of ALE.