The three dimensionally curved aortic arch is modeled as a portion of a helical pipe. Pulsatile blood flow therein is calculated assuming helical symmetry and an experimentally measured pressure pulse. Appropriate values for the Womersley and Reynolds numbers are taken from allometric scaling relations for a variety of body masses. The flow structure is discussed with particular reference to the wall shear, which is believed to be important in the inhibition of atheroma. It is found that nonplanar curvature limits the severity of flow separation at the inner bend, and reduces spatial variation of wall shear. [S0148-0731(00)00402-7]
Helical Flow Around Arterial Bends for Varying Body Mass
Contributed by the Bioengineering Division for publication in the JOURNAL OF BIOMECHANICAL ENGINEERING. Manuscript received by the Bioengineering Division January 14, 1999; revised manuscript received October 28, 1999. Associate Technical Editor: J. B. Grotberg.
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Zabielski, L., and Mestel, A. J. (October 28, 1999). "Helical Flow Around Arterial Bends for Varying Body Mass ." ASME. J Biomech Eng. April 2000; 122(2): 135–142. https://doi.org/10.1115/1.429635
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