TY - JOUR
T1 - Simulating pulsatile flows through a pipe orifice by an immersed-boundary method
AU - Yakhot, Alexander
AU - Grinberg, Leopold
AU - Nikitin, Nikolay
PY - 2004/11/1
Y1 - 2004/11/1
N2 - A pulsatile laminar flow of a viscous, incompressible fluid through a pipe with a sudden constriction (an orifice) was simulated by an immersed-boundary method. A fluid is forced to move by an imposed sinusoidally varying pressure difference, Δp (t). For a pulsatile flow through a pipe orifice, an oscillating recirculation bubble develops behind the orifice. The induced flow rate, Q(t), the recirculation bubble length, Lb(t), as well as their phase shift (φQ, φL) with respect to the imposed pressure difference were computed for different constriction ratios and the Womersley (Ws) number.
AB - A pulsatile laminar flow of a viscous, incompressible fluid through a pipe with a sudden constriction (an orifice) was simulated by an immersed-boundary method. A fluid is forced to move by an imposed sinusoidally varying pressure difference, Δp (t). For a pulsatile flow through a pipe orifice, an oscillating recirculation bubble develops behind the orifice. The induced flow rate, Q(t), the recirculation bubble length, Lb(t), as well as their phase shift (φQ, φL) with respect to the imposed pressure difference were computed for different constriction ratios and the Womersley (Ws) number.
UR - http://www.scopus.com/inward/record.url?scp=16244382889&partnerID=8YFLogxK
U2 - 10.1115/1.1845554
DO - 10.1115/1.1845554
M3 - Article
AN - SCOPUS:16244382889
SN - 0098-2202
VL - 126
SP - 911
EP - 918
JO - Journal of Fluids Engineering, Transactions of the ASME
JF - Journal of Fluids Engineering, Transactions of the ASME
IS - 6
ER -