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Question about fluid mechanics -relationship between friction factor and reynolds

  1. Jan 28, 2012 #1
    So, I understand that when reynolds number increases, the fluid becomes more turbulent, and there is a greater energy loss due to formation of eddies. However, shouldn't this increase in reynolds number cause an increase in friction as well?

    But, according to the moody diagram (http://piping-designer.com/wiki/images/0/05/Moody-Diagram.jpg)
    as well as experimental data I have collected, it seems that friction factor actually decreases as reynolds number increases. How is this possible, if increasing turbulence causes more haphazard flow, wouldn't their be greater frictional forces?
     
  2. jcsd
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