HDS-5 Examples - Outlet velocity?
HDS-5 Examples - Outlet velocity?
(OP)
Has anyone actually worked through the examples in HDS-5? I'm on a learning curve with hydraulics, but can't for the life of me work out the outlet velocity... well, I can, but it doesn't match the book answer, and the book doesn't explain how to work out the example problems. Help anyone?
Thanks,
CAthy
Thanks,
CAthy





RE: HDS-5 Examples - Outlet velocity?
Usually based on the normal depth calculation with the slope, Manning coefficient, flow rate, geometry of the cross section (width and side slope).
RE: HDS-5 Examples - Outlet velocity?
I suggest you use a program like HY-8 or HydroCulv to validate your results.
RE: HDS-5 Examples - Outlet velocity?
- based on pipe geometry, calculated Area of flow and Hydraulic Radius for various depths of flow in a 1.8m diameter pipe
- used these A and R values to calculate Q (using Manning's), trial and error until I got to my design flow
- then calculated velocity using Q=vA
The problem is my answer doesn't come close to the answer in the book for the example problems.
I am also trying to use HY-8, but the problem is that the examples in the book use a "given" tailwater depth; HY-8 doesn't allow you to input that parameter.
RE: HDS-5 Examples - Outlet velocity?