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Question: consider a series of geometrically similar passages of circular crosssection...

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Consider a series of geometrically similar passages of circular cross-section. A change in any
length dimension produces proportionate changes in all other length dimensions. In the case
above, a fluid of such low viscosity flows through the passage that viscous stresses on any
particle of fluid are negligible compared with inertial stresses. Passages of different size are to
be considered, all with the same incompressible fluid entering the duct with the same velocity
V1. Indicate whether the following increases, decreases, or stays the same as D1 increases:
(a) The value of V2
(b) The volume rate of flow
(c) The value of (p1-p2) / rho*V12
(d) The value of (p1-p2)
(e) The mass rate of flow per unit cross-sectional area at section 2

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