1. Energy dissipation on block ramps with staggered boulders
- Author
-
Ahmad, Zulfequar, Petappa, Nadimetla M., and Westrich, Bernhard
- Subjects
Boulders -- Mechanical properties ,Stability -- Evaluation ,Energy dissipation -- Measurement ,Hydraulic engineering -- Research ,Engineering and manufacturing industries ,Science and technology - Abstract
Block ramps are a short length of a steep channel armored with rocks, which produce high dissipation of energy. This technical note presents the results of experiments performed on a ramp having a staggered arrangement of hemispherical boulders with base material on its bed. Compared to row and random arrangements of boulders, a staggered arrangement produces more dissipation of energy. Relative energy loss in the ramp depends not only on the discharge but also on boulder concentration and their sizes. A relationship is proposed that satisfactorily determines the dissipation of energy on the ramp with base material and boulders placed with a staggered arrangement. DOI: 10.1061/(ASCE)HY.1943-7900.0000039 CE Database subject headings: Ramps; Rocks; Boulders; Energy; Stability; Flow resistance.
- Published
- 2009