Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion
Discussion Forum : Hydraulics and Fluid Mechanics - Section 2 (Q.No. 6)
6.
The discharge over a rectangular weir, considering the velocity of approach, is (where H1 = Total height of water above the weir = H + Ha H = Height of water, over the crest of the weir, and Ha = Height of water, due to velocity of approach)
Cd x L2g [H1 - Ha] Cd x L2g [H13/2 - Ha3/2] Cd x L2g [H12 - Ha2] Cd x L2g [H15/2 - Ha5/2]Discussion:
3 comments Page 1 of 1.
Praj said:
7 years ago
@All.
What is weir in a mass transfer operation?
Weir is an obstruction that maintains the level of the pool of liquid formed on each plate of the staged mass transfer operation equipment such as distillation column so that the surplus liquid flows over it but the plate is never dry and the liquid level is maintained on the plate. It is required to provide the liquid ample residence time on the plate to approach equilibrium as well as to facilitate the intimate contact between the vapours and the liquid over the plate.
What is weir in a mass transfer operation?
Weir is an obstruction that maintains the level of the pool of liquid formed on each plate of the staged mass transfer operation equipment such as distillation column so that the surplus liquid flows over it but the plate is never dry and the liquid level is maintained on the plate. It is required to provide the liquid ample residence time on the plate to approach equilibrium as well as to facilitate the intimate contact between the vapours and the liquid over the plate.
Lekha said:
8 years ago
What is weir? Please explain.
Dev said:
9 years ago
This formula is for rectangular orifice not for weir.
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