Flow of a fluid in a network of tubes (figure 28.12). A fluid circulates in laminar flow from A to B through a network of tubes, as shown in the figure. Obtain an expression for the mass flow rate w of the fluid entering A (or leaving B ) as a function of the modified pressure drop PA - PB. Ignore the disturbances at the various junctions of the tubes. answer: w=20L3(PAPB)R4 Figura 2B.12 Flujo de un fluido en una red con ramificaciones