Abstract
Recently, a microchannel flow analyzer (MC-FAN) has been used to study the flow properties of blood. However, the correlation between blood passage time measured by use of the MC-FAN and hemorheology has not been clarified. In this study, a simple model is proposed for estimation of liquid viscosity from the passage time t p of liquids. The t p data for physiological saline were well represented by the model. According to the model, the viscosity of Newtonian fluids was estimated reasonably well from the t p data. For blood samples, although the viscosity \( \eta_{\text{mc}} \) estimated from t p was shown to be smaller than the viscosity \( \eta_{{450{\text{s}}^{ - 1} }} \) measured by use of a rotatory viscometer at a shear rate of 450 s−1, \( \eta_{\text{mc}} \) was correlated with \( \eta_{{450{\text{s}}^{ - 1} }} \). An empirical equation for estimation of \( \eta_{{450{\text{s}}^{ - 1} }} \) from \( \eta_{\text{mc}} \) of blood samples is proposed.
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Maki, Y., Endo, Y., Fukushima, M. et al. Estimation of viscosity from passage time of liquids flowing through a microchannel array. J Biorheol 26, 69–73 (2013). https://doi.org/10.1007/s12573-012-0048-5
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DOI: https://doi.org/10.1007/s12573-012-0048-5