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• ### It is smooth not rough for the question being asked where AP, is the frictional pressure... It is smooth not rough for the question being asked where AP, is the frictional pressure drop per unit length, w is the fluid velocity, d is the pipe diameter, p is the fluid density, u is the fluid viscosity and c is the pipe roughness (with units of length). Air flows through a smooth pipe (i.e. no roughness) of 0.3 m in diameter at a mean velocity of 25 m/s. A 1/10 model of the pipe is built made...

• ### CENTRE INDEX NUMBER SECTION B 30 marks] Calculate the discharge through a pipe of diameter 200... CENTRE INDEX NUMBER SECTION B 30 marks] Calculate the discharge through a pipe of diameter 200 mm when the difference of pressure head between the ends of the pipe 500 m apart is 4 m of water. Take the value off= 0.009 in the formula hl= a) 19.5e/s b)2.0es e)03 m's d) 29.3 e/s 2. A scale 1:50 scale model of ship is towed through sea water at a speed of 1 ms. A force of 2 N is required...

• ### Q3. Drag measurements were taken for a 5 cm diameter sphere in water at 20°C to... Q3. Drag measurements were taken for a 5 cm diameter sphere in water at 20°C to predict the drag force of a 1 m diameter balloon rising in air with standard temperature and pressure. Given kinematic viscosity of water (v) = 10 X 106 m²/s and kinematic viscosity of air (v) = 1.46 X 10-5 m2/s. 1. Perform the Buckingham Pi theorem to generate a relationship for Fo as a function of the independent variables. Assume the drag Fo is...

• ### 8) (1 point) Honeycomb Flow Straightener -Anti-Turbulence Screens Silencer Fan Test Section Diffuser Inlet The wind... 8) (1 point) Honeycomb Flow Straightener -Anti-Turbulence Screens Silencer Fan Test Section Diffuser Inlet The wind tunnel shown above is; a) open circuit/suction/low speed wind tunnel b) open circuit/blow-down/low speed wind tunnel c) closed circuit/suction/supersonic wind tunnel d) closed circuit/blow-down/supersonic wind tunnel 9) For the air wind tunnel shown above in Q8: (6 points) Assuming a circular cross section, the atmospheric pressure is 101.325 kPa, density of air is 1.2 kg/m°, and absolute viscosity of air is 1.825*10-5 Ns/m² (assume...

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• ### (a) A horizontal pipe of diameter 10 cm carries crude oil from A to C as... (a) A horizontal pipe of diameter 10 cm carries crude oil from A to C as shown in Figure 4. At a point B, midway between A and C, oil leaks at a volume flow rate of QL . The pressure drop per unit length along AB is 640 Pa/m and along BC is 600 Pa/m. Determine the leakage flow rate QL . The density of oil is 800 kg/m3 and its dynamic viscosity is 0.1 N.s/ m2 . You...

• ### (25 pts) A natural gas pipeline (50 cm diameter) is routed through a river as shown... (25 pts) A natural gas pipeline (50 cm diameter) is routed through a river as shown in the sketch below. The river water is 15 C and the pipe temperature may be assumed to be the same. Natural gas (methane) at a pressure of 500 kPa, flows through the pipeline at a bulk velocity of 30 m/s. Fluid properties of methane and other parameters are listed here: 4. Water, . T, NatI Gas Surface temperature: T 15 C Inlet temperature:...

• ### 6a. The aerodynamic drag acting on a cylinder at a very low Reynolds number (Stokes flow... 6a. The aerodynamic drag acting on a cylinder at a very low Reynolds number (Stokes flow or creeping motion) is a function of dynamic viscosity of fluid (u), diameter of cylinder (D) and freestream velocity (U). Find a non-dimensional parameter using dimensional analysis. 6b. A model test is to be conducted in a water tunnel using a 1: 20 model of a submarine, which is to travel at a speed of 12 km/h deep under sea surface. The water temperature...