The figure illustrates flow through a pipe with diameters of 1.0 mm and 2.0 mm a
ID: 1417451 • Letter: T
Question
The figure illustrates flow through a pipe with diameters of 1.0 mm and 2.0 mm and with different elevations. Px is the pressure in the pipe, and Vx is the speed of a non-viscous incompressible fluid at locations x = Q,R,S,T, or U.
Course Contents » » Homework Set #8 (due 6/ 16 at 5PM) » Laminar flow concepts Timer Notes à Evaluate Feedback Print ' Info The figure illustrates flow through a pipe with diameters of 1.0 mm and 2.0 mm and with different elevations. Px is the pressure in the pipe, and Vx is the speed of a non-viscous incompressible fluid at locations x-Q,R,S,T, or U. D=2mm PT is PR Po is PR. VR .. VT Pu is.PQ Vs is.. 0.5VQ VQ is Vu Submit Answer Tries 0/20 Threaded View Chronological WS whatExplanation / Answer
1.PT is less than PR [Pr is under more pressure due to weight of the fluid (lower elevation)]
2.PQ is < PR. [PR is at a lower velocity, therefore the kinetic energy loss as the velocity decreases is turned into pressure]
3.VR is = VT [same diameter, same mass flow, therefore same V (A1V1=A2V2)]
4.PU is < PQ [PQ is at a lower elevation, more pressure due to gravity]
5.VS is < 0.5VQ [the velocity of VS is 0.25VQ (diameter doubles, cross-sectional area goes up by 4x)]
6.VQ is equal VU [no change in pipe size, mass flow conserved,therefor no change in velocity]