Spatial Correlation in Mechanical Heart Valve Leakage Jets

摘要

Turbulent flow can be generated by prosthetic devices at the blood stream level, causing a mechanical stress on the blood particle. This mechanical stress can entail adverse impacts of prostheses' recipients, such as hemolysis. The experimental research is on the quantitative investiga tion of the flow field of mechanical bileaflet valve using Particle Image Velocimetry(PIV). Two major measurements focused on leakage jets study were taken. One is standard nozzle meas urement and the other one is mechanical valve measurement. These quantitative data could be utilized as basis for a CFD simulation of relevant phenomena. The self-preservation of leakage jets was evaluated with a new method spatial correlation.