Q.2.A.The closed tank in figure is at (20°c) (specific weight of air =0.0118 kN/m³). If the pressure at point (A) is (98 kPa) absolute, what is the absolute pressure at point (B)? IT 3m Air D 5m Air 3m Water 1 B. Consider the following steady, two dimensional velocity field: V=(u,v)= (0.5 +1.2x)i + (-2-1.2y) j, Is there a stagnation point in this flow field? If so, where is it? C

6 Consider a fully developed laminar flow of a fluid through 8027 m long and 4 cm diameter horizontal and circular pipe. The dynamic density and the viscosity of the fluid are 1252 kg/m³ and 0.3073 kg/(m.s). The velocity profile at a cross-section is given by: u(r)= 6[1 − ( 7 )²] - m/s Where r is the axial distance from the centre and R is the radius of the pipe. Determine the following: (i) (ii) the maximum velocity at a cross-section of the pipe, Umax the average velocity at a cross-section of the pipe, Vave the volume flow rate, Q (iv) Reynolds number, Re (v) friction factor, f (vi) head loss, hi (vii) pressure loss, AP (viii) pumping power required, (ix) for the same pumping power, the percentage decrease of the flow rate if the pipe is inclined 10° upward (assume the head loss, hò, calculated in part (vi) does not change) Useful formulae: 64 f Re h₂ = f ( =) ( 2² ) 2g =

Q 1: Find the value of pressure of CONFINED WATER at each of the points A and B and their DIRECTIONS. Water confined water =2m