Minor Loss Calculation for Liquids and Gases
Minor loss due to fittings in pipes and open channels
Minor loss calculation is mobile-device-friendly as of July 29, 2014
Units in minor loss calculator: ft=foot, m=meter, s=second.
Minor Loss Equation:
g = acceleration due to gravity = 32.174 ft/s2 = 9.806 m/s2.
hm = head loss due to a fitting and has units of ft or m of fluid. It is the energy loss due to a fitting per unit weight of fluid.
K = minor loss coefficient for valves, bends, tees, and other fittings - table of minor loss coefficients.
The minor loss calculation is valid for open channels (including partially full culverts) as well as closed conduits (circular or non-circular) flowing full. The minor loss calculation does not check for unreasonable inputs such as negative values. All values should be entered as positive.
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August 25, 2015: Made text fields narrower to show 8 significant figures rather than 16. Calculation still uses double precision internally.
LMNO Engineering home page (more calculations)