Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion
Discussion Forum : Hydraulics and Fluid Mechanics - Section 1 (Q.No. 8)
8.
A weir is said to be broad crested weir, if the width of the crest of the weir is __________ half the height of water above the weir crest.
Discussion:
15 comments Page 1 of 2.
Govendan said:
9 years ago
A structure, used to dam up a stream or river, over which the water flows, is called a weir. The conditions of flow, in the case of a weir, are practically the same as those of a rectangular notch.
(1)
Brajesh said:
1 decade ago
What is weir?
Shephali said:
1 decade ago
Weir is a barrier built across river to direct flow of water.
Vignesh said:
1 decade ago
Crest means?
Ketan singh said:
1 decade ago
Crest is the height of flow above the weir.
Rayudu said:
1 decade ago
Is it based on Buoyancy effect?
Charan said:
1 decade ago
Any one can send link about this topic?
Kaushal kishore said:
1 decade ago
Crest is the bottom edge of weir over which the water flows.
Lata n s said:
9 years ago
Please justify the answer clearly.
Ks patel said:
9 years ago
A broad-crested weir is a flat-crested structure, with a long crest compared to the flow thickness. When the crest is "broad", the streamlines become parallel to the crest invert and the pressure distribution above the crest is hydrostatic. The hydraulic characteristics of broad-crested weirs were studied during the 19th and 20th centuries. Practical experience showed that the weir overflow is affected by the upstream flow conditions and the weir.
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