AAPT Abstract Archive

Abstract Information

  Session: Progress in Pedagogy for Introductory Physics for Life Science
  Paper Type: Contributed
  Title: Teach Poiseuille First: Call for a Fluid Dynamics Paradigm Shift
  Meeting: 2016 Summer Meeting: Sacremento, California
  Location: N/A
  Time: 9:30AM
  Author: Bradley S. Moser, University of New England
207-602-2039, bmoser@une.edu
  Co-Author(s): James Vesenka
  Abstract: Blood pressure rises in arterial expansions and airplanes lift due to the Bernoulli principle; so states the standard approach to fluid flow in textbooks and lesson plans. These promote Bernoulli first, then Poiseuille’s law second (if at all). Yet it is known that lift is a complex phenomenon, invoking multiple conservation principles. Detailed study of the human circulatory system shows that blood pressure steadily drops as blood flows through the system. Regretfully, the two approaches to fluid dynamics are kept entirely separate: either Bernoulli applies (often misapplied) OR Poiseuille. In this talk, the presenter will review the growing evidence against pure Bernoulli descriptions and discuss contradictory results from a circulatory system model we developed [1], which support a Poiseuille first approach to teaching fluid dynamics. The growing emphasis on life science applications heightens the need to shift focus toward more realistic viscous and turbulent fluid properties.
  Footnotes: 1. http://dx.doi.org/10.1119/perc.2015.pr.085
  Presentation: AAPT 2016 summer meeting - Moser - Teach Poiseuille First.pdf

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