Journal
EUROPEAN JOURNAL OF PHYSICS
Volume 43, Issue 5, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1361-6404/ac7e8b
Keywords
fluid dynamics; variable mass; unsteady Bernoulli equation; equation of continuity
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This article discusses the time dependence of the liquid height in a right cylindrical tank open to the atmosphere, which is being filled by a laminar jet of incompressible inviscid liquid falling onto its free surface. Fluid is escaping through a hole centered in the bottom of the tank. The analysis level is suitable for an introductory undergraduate course in fluid dynamics.
A right cylindrical tank open to the atmosphere is being filled by a laminar jet of incompressible inviscid liquid falling onto its free surface. At the same time, fluid is escaping through a hole centered in the bottom of the tank. Newton's second law for variable mass and the unsteady Bernoulli equation are combined to find the time dependence of the liquid height in the tank. The level of analysis is suitable for an introductory undergraduate course in fluid dynamics.
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