Proof that the friction factor of Darcy Weisbach equation (f) equal to (64/Re) in case of laminar flow?
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- 3) Water at 20C° follow throw piping junction in the figure below. Entering section (1) at (0.0019m /sec). The average velocity at section (2) is (2.5 m/s). Apportion of the flow is diverted throw the shower head. Which contain (100 holes) of (1mm) diameter. The exit velocity from the exit shower head is 7.5 m/s assuming uniform shower flow estimate the diameter of section (2) (3) (2) (1)1. In laminar flow, which is correct?BJ: higher Re value has higher friction factorJB: lower Re value has higher friction factorGroup of answer choices A. BJ is false and JB is true B. BJ is true and JB is false C. BJ is false and JB is false D. BJ is true and JB is true 2.In turbulent flow, which is correct?BJ: higher Re value has lower friction factorJB: lower Re value has higher friction factorGroup of answer choices A.BJ is true and JB is true B.BJ is false and JB is false C. BJ is false and JB is true D. BJ is true and JB is false 3. In a system with 4 reservoirs and 1 pipe junction, how many continuity equations are formulable?Group of answer choices A. 2 B. 3 C. 5 D. 4 E. 1Jet water in pipe with diameter equal to 50 moving to velocity 30 divided into two branches with (0.75Q) and the other with (0.25Q) recpectively and Un equal diameter compnte value of force compenents on the plane
- Еxample 04 A liquid is flowing along a tapering pipe at a volume flow rate of 15 m³/min. The cross-sectional area of the pipe at the start is 0.05m? and this reduces to 0.02m2 at the outlet. Calculate the flow velocity at the inlet and outlet to the pipe.Briefly explain the shear stress and velocity profile for turbulent flow.) A 75 mm-diameter orifice is on the verticalside of a closed tank. The tank rests on a flat groundand the orifice is 0.5 m above the ground. Filled withfour fluids with air on the topmost portion that is undera pressure of 15 KPa, and the rest of specific gravities of0.80, 1.0, and 1.50, respectively, the jet hits the groundat a horizontal distance of 3.75 m. If the liquids have thesame thickness, and the power lost in the system is 233watts, determine the following:(a) The initial discharge in L/s if C=0.63.(b) The thickness of each liquid in m.(c) The coefficient of contraction.
- In a pipe of diameter 300mm the center line velocity and the velocity at a point 100mm from the center, as measured by pitot tube are 2.4 m/s and 2.0 m/s respectively. Assume the flow in the pipe to be turbulent find: 1-Dischrge through the pipe,2-Coefficient of friction, 3 Height of roughness projections.Please do not waste my question solve with correct answers only.1. when , the flow is accelerates if the cross sectional area is increases ( a) M 1 (c) M =1 2. If the sonic conditions does occur in the duct it will occur at the duct maximum area(T/F) 3. For laminar zone the velocity profile will be (a) Linear (b) (b) Parabolic (c) (c) Logarithmic (d) (d)none of above 4. The thickness of boundary layer decreases as distance from leading edge increase(T/F) 5. The main property that effects a boundary layer is... (a) Temperature (b) pressure (c) viscosity (d) surface tention.Comment on the significance of any experimental errors for ORIFICE AND FREE JET FLOW
- The velocity profile in fully developed laminar flow in a circular pipe of inner radius ro, is given by v=9(1-7) Find: 1) Plot the velocity profile. 2) The volume of water flows out of the pipe in 0.2 min?(c) 3.43 m (d) 2.34 m 9. Air at 20°C and 105Pa enters the bottom of an 85° conical flow meter duct at a mass 3 flow rate of 0.3 kg/s, as shown in the figure. It supports the centered conical body by steady annular flow around the cone and exits at the same velocity as it enters. Estimate the weight of the body in Newtons 20a 85° 1x3-14x0 d = 10 cm VAir at 550 kPa and 100°C enters a smooth 1-m-long pipeand then passes through a second smooth pipe to a 30-kPareservoir, as in Fig. Using the Moody chart to computef , estimate the mass flow through this system. Is theflow choked?