Use Mannings Equation: Q=(1.486/n)*(A)*(R)^(2/3)*S^(1/2) Q = Flow (CFS) n = Roughness Coefficient A = Cross sectional flow Area of Fluid (FT*FT) R = Hydraulic Radius (FT) S = Slope (FT/FT)
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For laminar flow? For a full pipe? for a 3/4-full pipe? For a 1/2-full pipe? It all makes quite a difference. Please repost your question with a little more information. It would also help to for us to know the coefficient of friction of the inside of the pipe.
If we assume that the pipe is completely full of oil, it would just be the volume of the pipe = pi * r2 * l, where pi = 3.14159, r = radius, and l = length of the pipe. If the pipe is not full, then multiply the volume by the percentage of oil in the pipe. For example, if 50% full, then multiply by .5. If the pipe bends, take into account the different volume of the bend. If the bend is 90 degrees, this can be accomplished by taking the average length of the two bent segments for the length.
Assuming you're asking for maximum flow rate under full pipe conditions (pipe flowing full), we can estimate it using standard hydraulics. 🔹 Step 1: Pipe Area Pipe diameter = 7 inches Radius = 3.5 inches = 0.2917 feet Cross-sectional area (A) of the pipe: A=πr2=π(0.2917)2≈0.2674 ft2 A=πr2=π(0.2917)2≈0.2674 ft2 🔹 Step 2: Flow Rate Now, let's calculate the flow rate (Q) in cubic feet per second (cfs) for a range of velocities. Flow rate formula: Q=A×V Q=A×V Where: QQ = Flow rate in cfs AA = Cross-sectional area in ft² VV = Flow velocity in ft/s Common Velocity Values: Velocity (ft/s) Flow Rate (cfs) Gallons per Minute (GPM) 5 1.337 599.6 10 2.674 1,199.3 15 4.011 1,798.9 💧 1 cfs = 448.831 gallons per minute (GPM)
by multiplying the pipe size with the number of welded joints.regardsZH
The volume of flow will be the same, but the velocity will be increase through the 15ml pipe. Q=v*A.