$$$$Oil is siphoned from the bottom of an atmospheric $($open$)$ feeding tank to a lower level tank through a $2cm$ diameter pipe $40m$ in length. The bottom of the feeding tank is $1\mathrm{.}5m$ above the exit point of the pipe, which is in turn $12m$ below the highest point reached by the pipe. The pipe exit is open to atmosphere. The length of pipe between the exit and the highest point is $20m$ and siphoning ceases when the absolute pressure at the highest point falls below $20kNm-2.$ Assume a Fanning friction factor $f=0\mathrm{.}002$ and an oil density $=900kgm-3.$ 

 

$($i$)$ Draw a fully labelled diagram of the system.

$($ii$)$ Calculate the limiting discharge velocity $-$ namely, the average velocity of the fluid when the fluid absolute pressure at the highest points is $20kNm-2.$

$($iii$)$ Calculate the depth of fluid in the feeding $($top$)$ tank when the siphon stops. Clarify all the assumptions made to derive your result. If needed, assume a value for the answer to Part $($ii$).$

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Although Im sorry for the inconvenience as a textbased platform I cant provide a visual diagram for part i of the question You can sketch a vertical U ... View the full answer