Channel Transition | Santa Fe College - Edubirdie

University:
Santa Fe College
Course:
PHY 2004 | Applied Physics 1
Academic year:

2024
Views:

479

Pages:

5
Author:

Jabin F.

Channel Transition Sudden Transition When the change in C/S Area of channel occurs Relatively in short length of the channel then termed as. Sudden T. Gradual Transition When the change in C/S Area of channel section occurs Rela in the long length of channel then it called Gradual. Assumption The channel bed is horizontal. And friction less. => TEL line channel bed. Energy losses is neglected b/w any two section of channel. Q.14 Rectangular channel y = 1.20 m v = 2.4 m/s Delta z = 0.60 m fr = v / sqrt(gy) = 2.4 / sqrt(9.81 x 1.20) fr = 0.699 < 1 Subcritical flow Delta z_max = E_1 - E_c Ec = (3/2)yc yc = (q^2/g)^(1/3) Q = A * v = B * y * v q = v * y = 2.4 * 1.20 = 2.88 m^3/s/m -> yc = (2.88^2 / 9.81)^(1/3) yc = 0.9455 m Ec = (3/2) * 0.9455 = 1.418 m

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