TY - JOUR
T1 - Mass transport in blood flow through an stenosed tube
AU - Ishikawa, Takuji
AU - Oshima, Shuzo
AU - Yamane, Ryuichiro
PY - 1998
Y1 - 1998
N2 - It is pointed out that mass transport in an artery, such as LDL transport, influences the progression of stenosis severely. Mass transport in blood flow through an stenosed tube is analyzed numerically. Flow is assumed to be periodic, incompressible and axisymmetric. Non-Newtonian viscosity of blood and movement of arterial wall are considered. The effect of pulsation, non-Newtonian property of blood and wall movement on mass transport is investigated. Flow pattern, concentration pattern and distribution of concentration gradient on the wall are obtained. It is found that the effect of the vortex on mass transport on the wall changes drastically with Schmidt number. In low Schmidt number flow the strength of vortex and its center position is important. Therefore, time-mean mass transport on the wall has maximum value at certain frequency because of the resonance of the vortex. On the other hand, whether the vortex downstream of the stenosis flows away or not becomes important in high Schmidt number flow.
AB - It is pointed out that mass transport in an artery, such as LDL transport, influences the progression of stenosis severely. Mass transport in blood flow through an stenosed tube is analyzed numerically. Flow is assumed to be periodic, incompressible and axisymmetric. Non-Newtonian viscosity of blood and movement of arterial wall are considered. The effect of pulsation, non-Newtonian property of blood and wall movement on mass transport is investigated. Flow pattern, concentration pattern and distribution of concentration gradient on the wall are obtained. It is found that the effect of the vortex on mass transport on the wall changes drastically with Schmidt number. In low Schmidt number flow the strength of vortex and its center position is important. Therefore, time-mean mass transport on the wall has maximum value at certain frequency because of the resonance of the vortex. On the other hand, whether the vortex downstream of the stenosis flows away or not becomes important in high Schmidt number flow.
KW - Bio-fluid mechanics
KW - Diffusion
KW - Fluid dynamics
KW - Non-newtonian fluid
KW - Numerical analysis
KW - Pulsation
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U2 - 10.1299/kikaib.64.2774
DO - 10.1299/kikaib.64.2774
M3 - Article
AN - SCOPUS:77950043251
VL - 64
SP - 2774
EP - 2781
JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
SN - 0387-5016
IS - 625
ER -