- Question I A Water Is Conveyed At A Rate Of 0 06m S In A Pipe Which Enlarges From 0 2m To A Diameter Of 0 3m Sharply 1 (48.6 KiB) Viewed 27 times
Question I (a) Water is conveyed at a rate of 0.06m³/s in a pipe which enlarges from 0.2m to a diameter of 0.3m sharply as shown in Figure 1. Two pipes have relative roughness of 0.02 and 0.01 for the smaller and the larger pipe respectively. Two water manometers are fitted as shown in Figure 1 with the manometer 1 L₁ = 12m before the expansion and manometers 2 on the larger pipe L₂ = 30m after the expansion. The manometers read h₁ = 80cm and h₂ = 20cm. The kinematic viscosity of the water is 106m²/s. Determine the flow states and read friction factors from the Moody Chart for both pipes. [6/25] Manometer 2 Manometer 1 th₂ h₁ 2 Figure 1 (b) If both local and friction losses are considered between sections 1 and 2 with the local head loss expressed as &(-), where V, and V₂ are the velocities in the smaller and larger pipes 20 respectively, determine the local loss coefficient k. [12/25] (c) Sketch the total energy + +z) line and the hydraulic gradient +2) 1 +2) line from section 1 20 Pg PS to 2 and briefly explain the causes of line variations. L₁ L₂ [7/25]