Forces on Reducing Bend. Water is flowing at steady state and 363 K at a rate...
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Forces on Reducing Bend. Water is flowing at steady state and 363 K at a rate of 0.0566 m/s through a 60° reducing bend (a2 = 60°) in fig below. The inlet pipe diameter is 0.1016 m and the outlet 0.0762 m. The friction loss in the pipe bend can be estimated as v22/5. Neglect gravity forces. The exit 111.5 kN/m? gage. Calculate the forces on the bend in newtons. pressure p2 = P2 a2 P1 2, Figure 4.3-2. Overall momentum balance for flow system with fluid entering at point 1 and leaving at point 2. For R, the body force Fyg is in the negative y direction and Fyg = -mg, where m, is the total mass fluid in the control volume. Replacing cos a by sin a, the equation for the y direction becomes R, = mu, sin az - mv, sin a, + P2 Az sin az – P, A1 sin a, + m, 8 (4.3-29) Forces on Reducing Bend. Water is flowing at steady state and 363 K at a rate of 0.0566 m/s through a 60° reducing bend (a2 = 60°) in fig below. The inlet pipe diameter is 0.1016 m and the outlet 0.0762 m. The friction loss in the pipe bend can be estimated as v22/5. Neglect gravity forces. The exit 111.5 kN/m? gage. Calculate the forces on the bend in newtons. pressure p2 = P2 a2 P1 2, Figure 4.3-2. Overall momentum balance for flow system with fluid entering at point 1 and leaving at point 2. For R, the body force Fyg is in the negative y direction and Fyg = -mg, where m, is the total mass fluid in the control volume. Replacing cos a by sin a, the equation for the y direction becomes R, = mu, sin az - mv, sin a, + P2 Az sin az – P, A1 sin a, + m, 8 (4.3-29)
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Related Book For
Fundamentals of Momentum, Heat and Mass Transfer
ISBN: 978-1118947463
6th edition
Authors: James Welty, Gregory L. Rorrer, David G. Foster
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