What are the two mechanisms theoretically considered in turbulent flow?
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- A fluid enters with a steady flow of 3.7 kg/s and an initial pressure of 690 kPa, an initial density of 3.2 kg/m3, an initial velocity of 60 m/s, and an initial internal energy of 2000 kJ Ikg. It leaves at 172 kPa, p = 0.64 kg/m?, v = 160 m/s, and u = 1950 kJ/kg. The heat loss is found to be 18.6 kJ /kg. Find the power in kW.The fluid condition at the inlet and exit of a horizontal convergent nozzle is analysed. The nozzle is operating steadily. and heat loss is assumed negligible. If the specific enthalpy of fluid and velocity, of fluid at the inlet are 3,212 kJ/kg and 237 km/hr respectively. At the exit the specific enthalpy of fluid is 2,556 J/kg. Calculate the rate of flow of fluid (mass flow rate) when the inlet area is 0.22 m2 and the specific volume at the inlet is 0.32 m3/kg.The fluid condition at the inlet and exit of a horizontal convergent nozzle is analysed. The nozzle is operating steadily. and heat loss is assumed negligible. If the specific enthalpy of fluid and velocity of fluid at the inlet are 3,089 kJ/kg and 229 km/hr respectively. At the exit the specific enthalpy, of fluid is 2,569 J/kg. Calculate the exit area (in mm2)of the nozzle when the specific volume at the 3 nozzle exit is 0.63 m/kg at the inlet area of 0.2 m2 and the specific volume at the inlet is 0.31 m3/kg. You do not need to include the unit for this question.
- Water at 80°C, 1 atm flows at an average velocity of 7 m/s in a horizontal pipe which has an internal diameter and a length of 0.2 m and 5 m, respectively. It is proposed to add eight symmetrically spaced 5 cm wide smooth, thin plates along the length of the pipe as shown. (Take pwater = 800 kg/m³, µwater = 357 × 10-6 Pa.sec at 80°C g = 9.81 m/s² and Reer = 500 000). a) Calculate the pressure drop in the pipe, Pa, without the plates.what is non darcy flow equations and darcy equations, What the different between they?Answer completely Show how the Darcy-Weisbach equation can be derived from the Hagen-Poiseuille equation through the introduction of the Reynolds number. What is the friction factor, f, equal to for flow at a laminar condition? What is it equal to in other regimes of flow?
- Flow in rivers is a good example of turbulent flow. Why? Elaborate your answerA converging nozzle with a circular cross-section processing air steadily has a side profile as shown below. The diameter varies linearly with the axial length of 3 feet. Inlet and exit diameters of the nozzle are 1.5 and 1 feet, respectively, while inlet velocity is 100 ft/s. Determine: a) the flow velocity at the half-length and full length assuming incompressible flow, and b) the flow velocity at the half-length and full length assuming isentropic flow. For this part assume inlet flow conditions that mimic 10,000 ft altitude. 100 ft/s air 1.5 ft 3 ft 1 ftThe fluid condition at the inlet and exit of a horizontal convergent nozzle is analysed. The nozzle is operating steadily and heat loss is assumed negligible. If the specific enthalpy of fluid and velocity of fluid at the inlet are 3,314 kJ/kg and 226 km/hr respectively. At the exit the specific enthalpy of fluid is 2,563 J/kg. Calculate the exit area (in mm-)of the nozzle when the specific volume at the nozzle exit is 0.61 m3/kg at the inlet area of 0.23 m2 and the specific volume at the inlet is 0.3 m3/kg.