EXPERIMENTAL-STUDY OF PHYSIOLOGICAL PULSATILE FLOW PAST VALVE PROSTHESES IN A MODEL OF HUMAN AORTA .1. CAGED BALL VALVES
EXPERIMENTAL-STUDY OF PHYSIOLOGICAL PULSATILE FLOW PAST VALVE PROSTHESES IN A MODEL OF HUMAN AORTA .1. CAGED BALL VALVES
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DOI：
10.1016/0021-9290(85)90051-x
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发表时间：
1985-01-01
影响因子：
2.4
通讯作者：
CHEN, CJ
中科院分区：
文献类型：
--
作者：
CHANDRAN, KB;KHALIGHI, B;CHEN, CJ
Pulsatile flow development past a caged ball valve in a model human aorta was studied using laser Doppler anemometry. Velocity profiles measured in the ascending aorta and in the mid-arch region were strongly influenced by the geometry of the value at the root of the aorta. Velocity profiles distal to the valve were asymmetric with jet-like flow in the peripheral region having larger velocity magnitudes towards the left lateral wall. In early diastole, a streamwise vortex motion was observed throughout the model aorta with fluid moving towards the downstream direction along the left lateral wall and reversed flow along the right lateral wall. With the caged ball valve at the root of the aorta, no reversed flow was observed along the inner wall of curvature in the mid-arch region.
