Head Loss Calculations - Memphis

1 Civil Engineering Hydraulics Mechanics of Fluids Head Loss Calculations Bernoulli and pipe Flow The Bernoulli equation that we worked with was a bit simplistic in the way it looked at a fluid system All real systems that are in motion suffer from some type of loss due to friction It takes something to move over a rough surface pipe Flow 2 2 Bernoulli and pipe Flow Consider flow in a constant-diameter pipe pipe Flow 3 Bernoulli and pipe Flow If we look at the energy at points 1 and 2. pipe Flow 4 p1 +v122+z1g=p2 +v222+z2g3 Bernoulli and pipe Flow Since this system is horizontal, z1 = z2 so pipe Flow 5 p1 +v122=p2 +v222 Bernoulli and pipe Flow The pipe has a constant diameter and the flow is constant at both sections so the velo

36 Pipe Flow The 2-nominal refers to the pipe size. At one time, it would have been the inside diameter of the pipe in inches but that is no longer the case. Like the 2 by 4 in lumber, it is now just a reference. Table C.1 in the back of the book gives the critical dimensions for the pipe. If no

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  Dimensions, Pipe, Nominal

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