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Fluid density, specific volume, specific gravity, mixture density, viscosity, pressure levels FLOW IN PIPES Pipe diameter, laminar/turbulent, Reynolds number, Bernoulli principle, Darcy formula, friction, dynamic/total pressure, heat power FLOW IN VALVES AND FITTINGS ...
Calculation examples Example 1:A round pipe has a diameter of 25 mm and water is running through it with a velocity of 10 m/s. What is the flow rate of the water? First, we calculate the cross-section area to be (25/2)^2 · 3.1416 ~= 490.875 mm2via thearea of a circle formula...
Calculate the volume of one foot of 1-inch Schedule 40 steel pipe. Published data shows that the internal diameter is 1.05-inches. Using the volume formula for cylinders, V= (diameter/2)^2 X pi X length X 7.48 gallons/cubic foot. Substituting terms V = (1.05/2) ^squared X 3.1416 X ...
According to the sub-catchment runoff coefficient, the weighted average value of each sub-catchment is obtained by using the sub-catchment area as the weight, which is the comprehensive runoff coefficient, and the comprehensive runoff coefficient calculation formula is shown in Equation (2). 𝜓...
The pipe network analsyis calculation has many applications. Two examples will be provided. 1. Municipal water supply system. A water tower is located at node D. The other nodes could represent industries or homes. Enter the water withdrawals at all the nodes as negative numbers, then enter ...
Formula The formula used by this calculator to calculate the internal pipe or duct diameter is: ø = (Q / (v ·π))½· 2 Derived from: A = Q / v A = π· r² r = ø / 2 Symbols Q = Volume flow rate v = Flow velocity ...
Q = Volume flow rate v = Flow velocity A = Cross-sectional area r = Radius ø = Diameter n.b. This formula assumes uniform flow conditions within the entire cross-sectional area of pipe, without any friction losses near to surfaces. ...
For the calculation of the friction factor the worksheet uses the Haaland equation which gives an implicit solution to the friction factor. The Wikipedia article on "Darcy friction factor formulae" states “The Haaland equation is used to solve directly for the Darcey-Weisbach friction factor f ...
FormulaThe volumetric flow rate formulae used by this calculator is:Q = v ·π· (ø / 2)²Q = ¼ · v ·π· ø²Derived from:Q = v · AA = π· r²r = ø / 2SymbolsQ = Volume flow rate v = Flow velocity A = Cross-sectional area r = Radius ø = ...