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In deriving Bernoulli's equation, we equated the work done on the fluid in the tube to its change in the potential and kinetic energy (a) What is the largest average velocity of blood flow in an artery of diameter 2 x 10-3 m if the flow must remain laminar? (b) Do the dissipative forces become more important as the fluid velocity increases? Discuss qualitatively. |
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Answer» (a) The pressure drop is greater. If the dissipative forces are present, there will be a loss of energy along the sides of the tube and therefore, the pressure drop will be greater. (b) With the increase in velocity the rate of loss of energy also increase. As a result, the dissipative forces become more significant. |
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