The fluid mechanics of the human arterial system is of vital importance to our health and safety. The specific gravity and viscosity of blood are about 1.06 and 3.3 centipoise(cp), respectively. The mean flow speed in the aorta (30 mm i.d.) of a large human is about 0.15 m/sec. Calculate the flow Reynolds number using these properties. Would you expect this flow to be laminar or turbulent?

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