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|Title:||In vitro confocal micro-PIV measurements of blood ﬂow in a square microchannel: the effect of the haematocrit on instantaneous velocity proﬁles|
Instantaneous velocity profiles
Red blood cells
|Citation:||Lima, R.; Wada, S.; Takeda, M.; Tsubota. K.; Yamaguchi, T. (2007) - In vitro confocal micro-PIV measurements of blood ﬂow in a square microchannel: the effect of the haematocrit on instantaneous velocity proﬁles. Journal of Biomechanics. ISSN 0021-9290. 40:12, p.2752-2757|
|Abstract:||A confocal microparticle image velocimetry (micro-PIV) system was used to obtain detailed information on the velocity profiles for the flow of pure water (PW) and in vitro blood (haematocrit up to 17%) in a 100-μm-square microchannel. All the measurements were made in the middle plane of the microchannel at a constant flow rate and low Reynolds number (Re=0.025). The averaged ensemble velocity profiles were found to be markedly parabolic for all the working fluids studied. When comparing the instantaneous velocity profiles of the three fluids, our results indicated that the profile shape depended on the haematocrit. Our confocal micro-PIV measurements demonstrate that the root mean square (RMS) values increase with the haematocrit implying that it is important to consider the information provided by the instantaneous velocity fields, even at low Re. The present study also examines the potential effect of the RBCs on the accuracy of the instantaneous velocity measurements.|
|Appears in Collections:||DTM - Artigos em Revistas Indexados ao ISI/Scopus|
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