Specific Force - Edubirdie

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

2024
Views:

360

Pages:

5
Author:

Jabin F.

Specific Force It is equal to the sum of pressure force and momentum flux per Unit weight P1 - P2 = M2 - M1 (P1 + M1) / Y = (P2 + M2) / Y Q^2 / (g A1) + A1 Z1 = Q^2 / (g A2) + A2 Z2 Velocity distribution -> In open channel flow Velocity distribution is Not & constant. -> The Velocity at the channel boundary is Zero while it is max. at a certain depth below the free surface. -> contour of equal Velocity is called isovels. -> for Very smooth OCF, max. Velocity occurs at the free surface. Rectangular Vsurface 0.2yo 0.6yo 0.8yo for Rivers and canal Vavg is taken at 0.6yo from free Surface. (Vavg)0.6 = (V0.2 + V0.8) / 2 V0.2 -> velocity at a depth of 0.2yo from free Surface. Qs = Integral(dQ) = Integral(dA . u) AV = Integral(B dy . u) AV = Integral(dA . u) Vavg = Integral(u dA) / A

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