Physical model study for evaluation of jet impact on sediment flushing

Građevinar

article

Ahmad Abdipour¹  Hassan Ahmadi²  Seyed Abbas Hosseini³ 

[1] Islamic Azad University Department of Civil Engineering Tehran;Islamic Azad University Department of Civil Engineering Roudehen;Islamic Azad University Department of Civil Engineering Teheran

关键词: pressure flushing;    physical model;    sediment scouring;    jet velocity;    nozzle diameter;   

DOI  :  10.14256/JCE.1499.2015

学科分类：社会科学、人文和艺术（综合）

来源: Hrvatsko Drustvo Gradevinskih Inzenjera

【 摘 要 】

Pressure flushing is one of the methods that are used for removing sediments from reservoirs. In this research, submerged jets were used in front of the dam. A physical model was developed to study the influence of jet characteristics (nozzle diameter, jet velocity, and jet discharge) and reservoir output parameters (bottom outlet level and discharge) on the sediment release. The efficiency of the jets was established by comparing the sediment scour obtained under different conditions: once with jets and once without jets. The sediment scouring efficiency ranged between 0.9 and 3.1 for jet experiments, and between 0.1 and 0.3 for reference tests (without jets).

【 授权许可】

CC BY