18. 3.3. It is proposed to determine the flow rate through a pipeline from pressure measurements at two points of different cross-sectional areas. No energy transfers are involved (g = ws = 0) and...

Extracted text: 18. 3.3. It is proposed to determine the flow rate through a pipeline from pressure measurements at two points of different cross-sectional areas. No energy transfers are involved (g = ws = 0) and potential differences are negligible. Show that for the steady one-dimensional, frictionless flow of an incompressible fluid, the flow rate can be represented [2pg.(P, – P2)]2 A - A? m° = A,A2 1.1.