engineering recuitment HPCL Junior Executive 2025 Mock Test Fluid Mechanics Flow Through Pipes Water Hammer in Pipe
Consider that the water is flowing through the pipe & the valve is provided at the end of the pipe.
Let L = length of the pipe
T = Time required to close the valve
C = Velocity of pressure wave
Then valve closure is said to be gradual if1
\(T > \frac{{2L}}{c}\)
2
\(T < \frac{{2L}}{c}\)
3
\(T > \frac{L}{c}\)
4
\(T < \frac{L}{c}\)