Pressure loss coefficient

  1. Hi,
    I want to calculate the pressure loss coefficent for a diffuser but I can't find the equation. I tried with bernoulli but I don't get it. I've read that the coefficient depends on the lenght the scale and conical degree of the difuser?

    Can you help me?

    thank you!
  2. jcsd
  3. hi,

    Without the dimensions i can't calculate it properly, but 0.4 x 1/2pv^2 will more than cover the resistance in pascals.

    p= air density which is approx 1.2 kg m^3
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