(B) Consider the fully developed upward flow of air in a vertical smooth 0.06 m diameter...
Problem1 It is known that for a laminar flow through a round pipe φ(D)-32 VD, where "I" and "D" are length and diameter of the pipe, respectively. Consider a fully developed, laminar flow Q- through two horizontal smooth pipes of equal length. The pressure drop for the first pipe is 1.44 times greater than is for the second pipe. If the diameter of the first pipe is D, determine the diameter of the second pipe. Neglect the minor losses.
Problem1...
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7- A pipe of 120 mm internal diameter 2.2 m long carries thermally an hydrodynamical fully developed flow at 1 is maintained at a temperature of go c temperature of the fluid reaches 50'C. Case b) Find roughness is o.26 mm and your findings. 21.5 kg/s. The pipe is smooth and Case a) Find h where the bulk the fluid temperature reaches 5o'С. Discuss nended in quiescent air Aihat
7- A pipe of 120 mm internal...
1. For water at 20 C flowing through a straight smooth pipe at 0.06 m/h, the pipe diameter for which transition to turbulence will occur is approximately a. 1.0 cm b. 1.5 cm c.2.0 cm d. 2.5 cm e. 3.0 cm 2. Find the Reynold number, the roughness parameter, the friction factor f and the pressure drop for flow of water at 20 C through a 5 cm diameter pipe of roughness height E=0.5 mm if the flow rate is...
use table A-15 kinematic viscosity
6. Consider a 2-m long smooth cylindrical pipe of 5 cm internal diameter, that is maintained at a constant surface temperature. Air flows through the tube at 0.5 m/s. Air enters the pipe at 20°C and leaves it at 60°C. Determine: (a) Is the flow laminar or turbulent? (b) Is the flow fully developed? (c) What Nu number correlation will you use to find h? Find Nu. (d) Find the convection heat transfer coefficient (h)...
365) Consider the flow of air C=1.225kg/m2, 18 x 10- Pas) through an inclined, galvanized irom pipe (e=0.15mm) at a rate of Q-40s. For every 100m in the horizontal direction the pipe descends 50m in the vertical direction. a) (4,5v) If the pressure drop is to be no more than 15kPa per 100m of pipe, determine the minimum pipe diameter. b) (1,0v) Discuss the difficulties in solving this type of problems, in the context of pipe networks, regarding the level...
In fully developed laminar flow in a circular pipe, the velocity at R/2 (midway between the wall surface and the centerline) is measured to be 91 m/s. Determine the velocity at the center of the pipe. The velocity at the center of the pipe m/s
Alt 9) Gas A, in fully developed, laminar air flow, enters a tubular inhaler of A in radius and I in reacts at the inner wall of the inhaler to fom gas B. The per unit area is-r.-k"C. To obtain the Ca profile we do the shell rate of A balance of mass transfer, where the generation term is a catheter of radius Rc placed in a small artery of radius R as shown the moves at a constant speed...
Water is in steady fully developed laminar flow between two horizontal, very wide (W) and long (L) parallel surfaces separated by a distance b. The bottom surface at y 0 moves in the negative x-direction at a speed vo while the top surface at y b is stationary. In addition, a constant pressure gradient dP/dx is acting on the liquid in the x-direction. (a) Write the simplified form of the Navier-Stokes equation and the appropriate boundary conditions. (b) Derive an...
The figure shows a cylindrical tank of 80 em in diameter which is fully filled with water. In order to increase the flow from the tank to the exit pipe on the left, an additional pressure is applied to the water surface by an air compressor to supply air to the upper air chamber of the tank. The external walls of the tank are exposed to the atmospheric conditions of the area. You are required to determine the hydrostatic conditions...
Glycerin at 20 °C flows upward in a vertical 75-mm-diameter pipe with a centerline velocity of 3.8 m/s. Determine the (a) head loss and (b) pressure drop in a 10-m length of the pipe. (a) h kPa (b) Др —