Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion
Discussion Forum : Hydraulics and Fluid Mechanics - Section 1 (Q.No. 3)
3.
In a depressed nappe
Discussion:
25 comments Page 1 of 3.
Ayush said:
8 years ago
Sheet of water(top part) flowing over the notch/weir is called nappe, due to trapping of air beneath the flowing water, negative pressure is created.
(3)
Balraj said:
6 years ago
Half part of a double cone is called as Nappe.
(2)
Sarath said:
7 years ago
What is nappe?
(2)
Saravanan said:
9 years ago
What is nappe?
(1)
Rahul kumar said:
1 decade ago
Sometimes a weir is not fully ventilated, but is partially ventilated as shown in fig-2 (b). If the pressure below the nappe is negative, it is called a depressed nappe. The discharge of the nappe, in this case, depends upon the amount of ventilation and the negative pressure.
Generally, the discharge of a depressed nappe is 6% to 7% more than that of a free nappe. I hope it'll help you.
Generally, the discharge of a depressed nappe is 6% to 7% more than that of a free nappe. I hope it'll help you.
DUDA BHAVANI said:
2 years ago
In depressed nappe, the pressure below the nappe is negative.
In clinging nappe, no air is left below the nappe and the water stream adheres to the downstream face of the weir.
In clinging nappe, no air is left below the nappe and the water stream adheres to the downstream face of the weir.
Bani said:
6 years ago
What is the difference between Atmospheric and Vapour Pressure?
Dinesh said:
8 years ago
How it's negative. Can someone explain please?
Suchitra said:
9 years ago
Thanks @Rohit Sjrs.
Leghari said:
9 years ago
I confused about nappe. Please explain it.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers