Velocity of approach in weir computations: To facilitate the computation of weir discharges, corrected for velocity of approach, by a method based on the formulæ and prescriptions of the Lowell Hydraulic Experiments
✍ Scribed by A.W. Hunking; Frank S. Hart
- Publisher
- Elsevier Science
- Year
- 1884
- Tongue
- English
- Weight
- 267 KB
- Volume
- 118
- Category
- Article
- ISSN
- 0016-0032
No coin nor oath required. For personal study only.
✦ Synopsis
formulas, however, shows that the delivery pipe should be large in diameter for reducing the force of impact.
A steam pmnp for a marine railway at Portero, near San Francisco, California, had a suction pipe of about 400 feet long, and the force of impact of that column of water was so great that it finally burst the pipe. I then advised the proprietor, Mr. North, to put an air vessel on the suction side of the pump, as shown by the dotted line on the illustration, which was done, after which the plunger worked well.
The force of impact of a moving body has nothing to do with velocity of sound. Mr. Bilgram's statement that "the momentum of the water in the connecting pipe can hardly even temporarily increase the pressure in the boilm'" is disproved by the operation of the hrdraulie ram.