Rheology of Blood by NMR

Rheology of Blood Flow in a Branched Arterial System with Three-Dimension Model

“…Blood flow is demonstrated that the transition from laminar to turbulent only happens at Reynolds numbers of 3200 with vessel diameter about 7 mm, and 500 with vessel diameter about 1 mm, Han et al (2001). With assumption of Reynolds number approximately 480 along with 10 mm artery diameter, we could definitely consider the flow as laminar flow.…”

“…Recently, Power law and Carreau models, among variety of non-Newtonian models, are the most widely used, Quarteroni et al (2006). In addition Han et al (2001) found that blood flow could be described as a Bingham plastic following the Casson equation.…”

Fast magnetic resonance imaging and velocimetry for liquids under high flow rates

“…Therefore, it seems to be possible to measure velocities well above 0.5 m/s considering the length of the rf resonator. In contrast to [16] we observe discrete velocities for each individual voxel leading to an unambiguous velocity profile independent from the shape of the sample cross section. While this makes the pulse sequence more robust the penalty to be paid is a slightly longer pulse sequence due to the second slice gradient introduced.…”

“…These authors measured velocities %40 mm/s. Han et al [16] studied the rheology of blood in pipes of various diameters. They obtained projections of velocities in 1D profiles as well as 1D velocity distributions with maximum velocities of up to 3.5 m/s.…”

Modelagem matemática da fluidodinâmica não-newtoniana e bifásica simplificada da hemólise induzida mecanicamente em sistemas de bombeamento centrífugo de sangue

“…O comportamento reológico específico do sangue é devido principalmente às hemácias. O hematócrito, que mede a fração volumétrica das hemácias no sangue, gira entre 40-50 % no caso humano, excedendo bastante a fração volumétrica da fase particulada em relação a outros escoamentos envolvendo suspensões (Han et al, 2001).…”