TY - JOUR
T1 - A physiologically relevant, simple outflow boundary model for truncated vasculature
AU - Pahlevan, Niema M.
AU - Amlani, Faisal
AU - Hossein Gorji, M.
AU - Hussain, Fazle
AU - Gharib, Morteza
PY - 2011/5
Y1 - 2011/5
N2 - A realistic outflow boundary condition model for pulsatile flow in a compliant vessel is studied by taking into account physiological effects: compliance, resistance, and wave reflection of the downstream vasculature. The new model extends the computational domain with an elastic tube terminated in a rigid contraction. The contraction ratio, the length, and elasticity of the terminal tube can be adjusted to represent effects of the truncated vasculature. Using the wave intensity analysis method, we apply the model to the test cases of a straight vessel and the aorta and find good agreement with the physiological characteristics of blood flow and pressure. The model is suitable for cardiac transient (non-periodic) events and easily employed using so-called black box software.
AB - A realistic outflow boundary condition model for pulsatile flow in a compliant vessel is studied by taking into account physiological effects: compliance, resistance, and wave reflection of the downstream vasculature. The new model extends the computational domain with an elastic tube terminated in a rigid contraction. The contraction ratio, the length, and elasticity of the terminal tube can be adjusted to represent effects of the truncated vasculature. Using the wave intensity analysis method, we apply the model to the test cases of a straight vessel and the aorta and find good agreement with the physiological characteristics of blood flow and pressure. The model is suitable for cardiac transient (non-periodic) events and easily employed using so-called black box software.
KW - Arterial wave reflection
KW - Blood flow
KW - Computer modeling
KW - Fluid-structure interaction
UR - http://www.scopus.com/inward/record.url?scp=79954429243&partnerID=8YFLogxK
U2 - 10.1007/s10439-011-0246-0
DO - 10.1007/s10439-011-0246-0
M3 - Article
C2 - 21240638
AN - SCOPUS:79954429243
SN - 0090-6964
VL - 39
SP - 1470
EP - 1481
JO - Annals of Biomedical Engineering
JF - Annals of Biomedical Engineering
IS - 5
ER -