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I am trying to understand a document submitted by vendor. Its Pressure drop calculation. Friction pressure drop is calculated using Karman method and Moody frictio factor calculation. However , some of the calculation are not clear like why log of karman no. and log of Reynolds no. is calculated and then difference bw these two is calculated. Also some value “v” is also calculated (Log Re – 3.3) what is this equation ?

I am trying to understand a document submitted by vendor. Its Pressure drop calculation. Friction pressure drop is calculated using Karman method and Moody frictio factor calculation. However , some of the calculation are not clear like why log of karman no. and log of Reynolds no. is calculated and then difference bw these two is calculated. Also some value “v” is also calculated (Log Re – 3.3) what is this equation ?

Grade:12th pass

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