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Published on: February 3, 2014
[Flow pattern characteristics depending on angle of inclination of bloodstained surface]
E N Leonova1, M N Nagornov2, M Yu Makarova1
1I.M. Sechenov First Moscow State Medical University (Sechenovskiy University), Moscow, Russia.
Abstract:
The aim of this study is to determine the flow pattern characteristics depending on the angle of inclination of the surface on which bloodstains are formed. A large drip of donor human blood 80 µL was used. Experimental rectilinear strip-shaped flow patterns on the glass were obtained. The surface had a inclination of 30°, 45°, 60°, 75°. With increasing inclination angle, the length of the flow patterns increases from 24.5±0.07 to 48.3±0.02 cm, while the width decreases from 0.8±0.04 to 0.5±0.03 cm. The elements of the flow pattern structure are designated «head», «body» and end part. It is proposed to distinguish two types of flow pattern: the first one is formed when blood flows out of wound, the second one is formed when a drip or a limited blood mass falls on vertical or inclined surface.
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