Energy Dissipation Within the Wave Run-Up at Stepped Revetments  

作　　者：KERPEN Nils B BUNG Daniel B VALERO Darnel SCHLURMANN Torsten 

机构地区：[1]Ludwig-Franzius-lnstitute,Leibniz Universitat Hannover,30167 Hannover,Germany [2]Hydraulic Engineering Section,Fachhochschule Aachen,52066 Aachen,Germany

出　　处：《Journal of Ocean University of China》2017年第4期649-654,共6页中国海洋大学学报（英文版）

基　　金：part of the joint research project ‘wave STEPS’ funded by the German Federal Ministry of Education and Research(BMBF) through the German Coastal Engineering Research council(KFKI,03KIS108 and 03KIS119)

摘　　要：To understand the processes and energy dissipation performance caused by turbulence during the wave run-up over a stepped revetment,hydraulic model tests with steady flow conditions are conducted and correlated with unsteady flow conditions of the wave run-up within a short time frame.Under irregular waves,the run-up reduction over a stepped revetment is dependent on the Iribarren number and decreases for decreasing Iribarren numbers.Velocity gradients are found to be similar in a steady and unsteady flow regime near the pseudo-bottom.To understand the processes and energy dissipation performance caused by turbulence during the wave run-up over a stepped revetment, hydraulic model tests with steady flow conditions are conducted and correlated with unsteady flow conditions of the wave run-up within a short time frame. Under irregular waves, the run-up reduction over a stepped revetment is dependent on the Iribarren number and decreases for decreasing Iribarren numbers. Velocity gradients are found to be similar in a steady and unsteady flow regime near the pseudo-bottom.

关 键 词：RUN-UP stepped revetment roughness： energy dissipation 

分 类 号：P731.2[天文地球—海洋科学] P75