Consider the angular momentum relation in the form
What does r mean in this relation? Is this relation valid in both solid and fluid
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- A jet of water, issuing from sharp-edged vertical orifice under a constant head of 60 cm , has the horizontal and vertical coordinates measured from vena contracta at a certain point as 10. cm and 0.45 cm respevtively. Find Cc if Cd= 0.60.include your free body diagrama.0.612 b.0.962 c.0.98 d.0.623arrow_forwardExpress the unsteady angular momentum equation in vector form for a control volume that has a constant moment of inertia I, no external moments applied, one outgoing uniform flow stream of velocity V→, and mass flow rate m. .arrow_forwardConsider coolant in a circular pipe to be in laminar flow; the following formula gives one-dimensional velocity: V=Vmax*(1-((r/R)^2)) Vmax = 2 m/s R = Radius of Pipe = 0.05 m Fluid Density (uniform) = 300 kg/m^3 1. What is the coolant flow (m^3/s)? 2. What is the coolant average velocity in the pipe (m/s)? 3. What is the true kinetic head of flow expression?arrow_forward
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- The velocity distribution in the boundary layer is given by :u/U=(y/δ)^0.23 where u is the velocity at a distance y from the plate and u=U at y=δ , δ being boundary layer thickness. Find: a-The displacement thickness .b- the momentum thickness .c- the energy thickness. d- Boundary layer shape factor .e- energy loss due boundary layer if a particular section. The boundary layer thickness is 28mm and the free stream velocity is 19 m/s. if the discharge through the boundary layer region is 8m3/s per meter width, express this energy loss in term of meters of head. Take ρ=1.2 kg/m3arrow_forwardTen kilograms per second of air is flowing in an adiabatic system. At one section the pressure is 2.0 × 105 N/m2, the temperature is 650°C, and the area is 50 cm2. At a downstream section M2=1.2. (a) Sketch the general shape of the system. (b) Find A2 if the flow is frictionless. (c) Find A2 if there is an entropy change between these two sections of 42 J/kg-K.arrow_forwardA 5-cm-diameter horizontal jet of water with a velocity of 30 m/s relative to the ground strikes a flat plate that is moving in the same direction as the jet at a velocity of 20 m/s. The water splatters in all directions in the plane of the plate. How much force does the water stream exert on the plate?arrow_forward
- A 5 cm diameter of water jet strikes a flat plate which held normal to the direction of the water jet and with velocity 3.1617 m/s. Find the work done/s (in Nm/s) (answer in one decimal place) by the jet when the plate is moving with a velocity of 2m/s away from the jet along the same line.arrow_forwardA jet of water of diameter 60 mm strikes a stationary flat plate normally at a velocity of 26 m/s. What is the force exerted by the jet of water? Select one: a. 1,911.3 N b. 1,756.4 N c. 1,561.6 N d. 1,722.1 Narrow_forwardFluid Mechanics A horizontal jet of water exits a nozzle with a uniform velocity of Vj = 20 m/s and area of Aj= 3 cm^2, and strikes a flat plate that moves to the right at velocity of Vc = 15 m/s. Upon impinging the plate, the jet splits into an equal upward and downward half-jet. (i.e. A1 = A2 = 0.5Aj). Neglecting gravity and viscous forces, determine the force (in both x - and y - directions) required to keep the plate moving at a constant velocity.arrow_forward
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