Flow of a fluid in a network of tubes (Fig. 2B.12), a fluid is flowing in laminar flow from A to B through a network of tubes, as depicted in the figure. Obtain an expression for the mass flow rate w of the fluid entering at A (or leaving at B) as a function of the modified pressure drop PA-PB. Neglect the disturbances at the various tube junctions.

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3 Fluid in 2 A All tubes have the same radius R and same length L B 5 сл Fluid out