I can not provide an estimate.
In calculation of flow out of a pipe, more information would be needed. Since you have asked this under the category of the oil spill, I assume you are asking what is the flow of oil out a vertical pipe, if the pressure at the bottom is 40,000 psi, and the diameter is 21". You need to specify the length of the pipe and all properties of the fluid. Since you are asking this in relation to the BP oil spill, gas will come out of solution as the oil is coming to the surface (or sea floor) making the calculations far from simple. There are a number of commercial pipe flow simulators.
Again, for the BP spill, a team of scientists and engineers are using pipe flow simulation , if possible, and other methods to estimate the flow.
The velocity of flow in any pipe is determined by three things. The internal pipe diameter, the mass flow rate of the liquid and the fluid density.
of course liquid can flow through a pipe?
A device for controlling the flow of liquid can sometimes be a pipe.
I want to know based on flow and pressure how to calculate diameter of the pipe
Smaller diameter = Greater pressure
Assuming that the pressure remains at a constant, reducing the diameter of the pipe will increase the water flow. On the contrary, increasing the diameter would cause the water to flow at a much slower rate.
That depends on the diameter of the pipe.
For a fluid flowing in a pipe, the pressure loss will be greater for a liquid flow due to more frictional losses on the pipe walls.
A pipe. The volume of water available can be compared to voltage. The diameter of pipe could be compared to resistance with smaller diameter being larger resistance and the flow of water past a point in pipe is equivalent to current flow.
The flow-line of a pipe is the bottom inside portion of the pipe. Flow-lines are generally reffered to when establishing the elevation of the pipe work.
1.Flow Rate 2.Inside diameter of the pipe 3.Roughness 4.Corrosion and Scale Deposits 5.Viscosity of the liquid 6.Length of the pipe 7.Fittings 8.Straightness of the pipe
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