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  pressure drop  Pressure Drop


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    Straight Pipe
    Calculators for pressure drop by flow through a straight pipe.
    The diameter and wall roughness can be user defined or chosen from a listing of standard pipe sizes.
    Link to Calculation Form     Calculation Form in New Window

    Pipe with Fittings
    Calculators for pressure drop by flow through a pipe with fittings.
    The number of fittings can be put in manually or estimated by the calculation routine using a correlation based on complexity and average plant data. Uses the 2-k methode for the pressure drop through the fittings, which is the best available method for both the laminar and turbulent flow.
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    Wall Roughness values
    Tabulation of typical Wall Roughness for several materials in mm.
    The data is useful for User Defined Pipe pressure drop calculations.
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    Related Links

    American National Standards Institute
    The American National Standards Institute (ANSI) is a private, non-profit organization (501(c)3) that administers and coordinates the U.S. voluntary standardization and conformity assessment system.
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    Deutsches Institute fuer Normung
    The main activity of DIN is the development of technical rules. The objective of DIN is to create standards for the benefit of the economy and of society as a whole.
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    Beuth Verlag
    DIN Standards ISO Standards; VDI Guidelines, DVS-M/R; ASTM-, ASME BPVC-, IEEE-, SAE-Standards (US); JIS-Standards (JPN) and publications of Beuth Verlag
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    Piping Design Information is a site that offers plenty of information and links about piping.
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    Fundamentals of Fluid Mechanics
    Bruce R. Munson, Donald F. Young, Theodore H. Okiishi
    John Wiley & Sons, 5th edition, 2005
    ISBN 0471675822
    Fluid mechanics with theory, everyday examples and a collection of practical problems

    Engineering Fluid Mechanics
    R.A. Dodge & M.J. Thompson
    John Wiley & Sons, 8th edition, 2004
    ISBN 0471487376
    Readable approach, student friendly text. Guides readers from fundamental fluid mechanics concepts to real-world engineering applications.

    The two-K method predicts head losses in pipe fittings
    W.B. Hooper
    Chemical Engineering, Aug 1981
    Pages 96 to 100
    The pressure drop of fittings are predicted using this method, which is the best we've seen as it is valid for laminar and turbulent flow.

    How to predict pressure drop before designing the piping
    G.S. Brown
    Chemical Engineering, Mar 1987
    Pages 85 to 86
    This article contains correlations for anticipated numbers of fittings.

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