| Autor: |
Fatahi-Alkouhi, Reza, Shanehsazzadeh, Ahmad, Hashemi, Mahmud |
| Předmět: |
|
| Zdroj: |
Journal of Hydraulic Engineering; May2024, Vol. 150 Issue 3, p1-18, 18p |
| Abstrakt: |
Accurate prediction of pressure caused by plunging jets of high spillways is essential for assessing the bed rock scour initiation and expansion. The hydrodynamic pressure characteristics at plunge pools' bottom and inside rock joints are assessed based on the experimental results and the analysis of extensive available library experimental data. A new empirical model of mean dynamic pressure coefficient, the CP , and pressure fluctuation, the CP′ , for core and developed jets at stagnation point are presented. The effects of jet break-up ratio (L/Lb), the jet's fall height L to the jet break-up length Lb ratio, on CP and CP′ at the pool bottom and inside the rock joints are assessed. The maximum CP at pool bottom and inside rock joint occurs in L/Lb≤1.2 range while the maximum CP′ occurs within 0.85
|
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
