Flow of Suspensions Containing Particles of Two Different Sizes through a Capillary Tube

Goto, Hiroaki; Kuno, Hiroshi

doi:10.1122/1.549682

Cited by 34 publications

(17 citation statements)

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“…Packing of RBC is facilitated by RBC deformation (20). Partial or complete loss of RBC deformability by RBC heating results in a decreased Fahraeus-Lindqvist effect and a steeper hematocrit-viscosity curve in narrow tubes (22,23). RBC from preterm and term neonates and adults show similar deformability ( 16).…”

Section: Discussionmentioning

confidence: 99%

“…migrate towards the quickly moving central core. A wide volume distribution of RBC may enhance this phenomenon since small particles tend to push larger particles to the tube center (23). Neonatal RBC show both a larger size and a wider volume distribution than adult RBC (Table 1).…”

Section: Discussionmentioning

confidence: 99%

“…At higher hematocrit, the viscosity reduction may be 60% or more (1 8, 19). Moreover, viscosity reduction in narrow tubes may be enhanced by a large diameter (20), a wide volume distribution (23) and by RBC deformability (20). Inasmuch as neonatal RBCs are larger, have a wider volume distribution and increased membrane deformability compared to adult RBC (24), viscosity of neonatal blood in narrow tubes and small blood vessels may be considerably lower than that measured by means of rotational viscometers.…”

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confidence: 91%

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Viscosity Reduction of Red Blood Cells from Preterm and Full-Term Neonates and Adults in Narrow Tubes (Fahraeus-Lindqvist Effect)

Zilow

Linderkamp

1989

Pediatr Res

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ABSTRACT. In artificial tubes as well as in blood vessels with diameters less than 500 pm, blood viscosity decreases with decreasing diameter (Fahraeus-Lindqvist effect). Our study measured viscosity of red blood cells (RBC) from 10 preterm infants, 10 term neonates, and 10 adults by means of a capillary viscometer. RBC were suspended in buffer at hematocrits of 0.20,0.40, and 0.60 111 (1.00 111 = 100%).

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 91%

See 1 more Smart Citation

Viscosity Reduction of Red Blood Cells from Preterm and Full-Term Neonates and Adults in Narrow Tubes (Fahraeus-Lindqvist Effect)

Zilow

Linderkamp

1989

Pediatr Res

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“…The total volume fractions of PMMA filler particles used in the visualization experiments ranged from 3 to 32% by volume, with three replicates for some concentrations. The PMMA and polystyrene spheres being close in size, and having a low concentration of polystyrene spheres, reduced any effects that were caused by having a bidisperse suspension, as documented by Goto and Kuno [46,47]. It is well known that a shear gradient can cause a concentration change in a flowing slurry system.…”

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confidence: 92%

Development of a predictive power law relationship for polymer composites based on newtonial carrier concentrated slurries

2016

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A new theory that predicts the power law “n” for Newtonian carrier particulate composites has been developed using percolation theory concepts. Many polymer composites, such as sheet molding compound, polyurethanes based on polymer‐polyols, and highly filled epoxy compounds, are generated using highly filled Newtonian carriers. Essentially, all of slurries that have a high concentration of filler become shear thinning at some shear rate. Several sizes of calcium carbonate were initially investigated because of their extensive use in many industries as fillers. A new function was found that linearly correlates the power law constant, n, to the concentration of the filler above the percolation concentration. The behavior of this function suggests that the Newtonian to power law behavior may be dominated by percolation processes. A new percolation theory based model was developed that theoretically predicted the power law from the volume of the nondissipating clusters. A theory is proposed that relates the plug volume in tube flow to the power law, n. The central plug in tube flow was experimentally shown to be a nondissipating volume in the flowing slurry. Data were taken in Poiseuille flow that correlates the power law, n, calculated in the classical manner using pressure drop along the tube with the power law, n, calculated from the percolation‐based theory. POLYM. COMPOS., 39:1172–1191, 2018. © 2016 Society of Plastics Engineers

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“…These particles are often referred to as hard spheres since in suspension they only experience hydrodynamic and volume exclusion forces. The most commonly reported rheological property which results from mixing large and small spheres is a viscosity minimum at a constant solids loading (10,(13)(14)(15). For a wide range of particle sizes, the minimum viscosity corresponds to a mixing ratio resulting in the maximum packing density (16 -18).…”

Section: Introductionmentioning

confidence: 99%

The Equilibrium Properties and Microstructure of Mixtures of Colloidal Particles with Long-Range, Soft Repulsions

Hunt

Zukoski

1999

Journal of Colloid and Interface Science

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Flow of Suspensions Containing Particles of Two Different Sizes through a Capillary Tube

Cited by 34 publications

References 0 publications

Viscosity Reduction of Red Blood Cells from Preterm and Full-Term Neonates and Adults in Narrow Tubes (Fahraeus-Lindqvist Effect)

Viscosity Reduction of Red Blood Cells from Preterm and Full-Term Neonates and Adults in Narrow Tubes (Fahraeus-Lindqvist Effect)

Development of a predictive power law relationship for polymer composites based on newtonial carrier concentrated slurries

The Equilibrium Properties and Microstructure of Mixtures of Colloidal Particles with Long-Range, Soft Repulsions

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