Question: Consider a fluid with constant density is flowing in a circular pipe in z-direction and the radial direction is assigned as r-direction. (a) Please use

Consider a fluid with constant density is flowing in a circular pipe in z-direction and the radial direction is assigned as r-direction. (a) Please use shell balance to drive the equation of continuity in this case (20%). (b) Please use eq. (3.6-27) to drive the equation of continuity again (20%). Note ! Please give the assumption that you wanted when you drive the equation of continuity. + ar 1 (prv,) ar 1 (ve) (pv.) + + = 0 r 0 (3.6-27) z

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