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Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/610

Título: In vitro confocal micro-PIV measurements of blood flow in a square microchannel: the effect of the haematocrit on instantaneous velocity profiles
Autor: Lima, R.
Wada, Shigeo
Takeda, Motohiro
Tsubota, Ken-ichi
Yamaguchi, Takami
Palavras-chave: Microcirculation
Confocal micro-PIV
Instantaneous velocity profiles
Haematocrit
Red blood cells
Issue Date: 2007
Editora: Elsevier
Citação: 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
Resumo: 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.
Arbitragem científica: yes
URI: http://hdl.handle.net/10198/610
ISSN: 0021-9290
Versão do Editor: http://www.sciencedirect.com/science/journal/00219290
Appears in Collections:DTM - Artigos em Revistas Indexados ao ISI/Scopus

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