Formula for flow through a short tube at a moving liquid level
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I remember there were formulas for the discharge through a short pipe at a moving liquid level discussed in engineering fluid mechanics; for example, after a hydraulic test using a 5000-cubic-foot oil pipeline, it is necessary to drain the water, and this formula is used to calculate the time required for such drainage. I would be grateful if someone could provide some guidance
I’ve checked it; according to the book \"Engineering Fluid Mechanics\" written by Yuan Enxi, it is possible to use calculus for calculations – AdH = Qdt, where A is the cross-sectional area of the vertical tank and Q is the flow rate through the pipe