TY - GEN
T1 - Wave run-up, run-down studies on berm breakwater with concrete cubes as armour units
AU - Rao, Subba
AU - Shirlal, Kiran G.
AU - Balakrishna Rao, K.
AU - Janardhan, Prashanth
N1 - Funding Information:
The authors are thankful to the Director of National Institute of Technology Karnataka, Surathkal, and Head of the Department of Applied Mechanics and Hydraulics for the facilities provided for the investigation and permission granted to publish the results. Also the authors would like to thank INCH, Ministry of Water Resources, GOI for providing financial support to carry out the work.
Publisher Copyright:
© 2019, World Scientific. All rights reserved.
PY - 2011
Y1 - 2011
N2 - The basic principle involved in the design of berm breakwater is provision of a wide berm at or around the water level with smaller size stones in the armour, which are allowed to move till an equilibrium slope is achieved. This paper presents the results of experimental studies conducted on the wave run-up, run-down characteristics of berm breakwater using concrete cube as artificial armour unit. The experiments were conducted under following conditions, berm width = 0.45m, water depths 0.37, 0.40 & 0.43m, breakwater slope 1:1.5. The weight of concrete cube is 79.5 gm. The wave heights used in the experiments are 0.10, 0.12, 0.14, and 0.16 m and wave periods are 1.6 and 2.0 sec. From the experimental study it is found that the run-up is more for longer period waves in comparison with the shorter period waves. With the increase in deep water wave steepness the run-up and run-down was found to decrease for all the water depths considered. The run-up values (Ru/Ho) vary from 0.52 to 1.08. The range of run-down values (Rd/Ho) varies from 0.45 to 0.88. In berm breakwater the run-up and run-down values were reduced by 35.91% and 23.81% when compared with conventional rubble mound breakwater.
AB - The basic principle involved in the design of berm breakwater is provision of a wide berm at or around the water level with smaller size stones in the armour, which are allowed to move till an equilibrium slope is achieved. This paper presents the results of experimental studies conducted on the wave run-up, run-down characteristics of berm breakwater using concrete cube as artificial armour unit. The experiments were conducted under following conditions, berm width = 0.45m, water depths 0.37, 0.40 & 0.43m, breakwater slope 1:1.5. The weight of concrete cube is 79.5 gm. The wave heights used in the experiments are 0.10, 0.12, 0.14, and 0.16 m and wave periods are 1.6 and 2.0 sec. From the experimental study it is found that the run-up is more for longer period waves in comparison with the shorter period waves. With the increase in deep water wave steepness the run-up and run-down was found to decrease for all the water depths considered. The run-up values (Ru/Ho) vary from 0.52 to 1.08. The range of run-down values (Rd/Ho) varies from 0.45 to 0.88. In berm breakwater the run-up and run-down values were reduced by 35.91% and 23.81% when compared with conventional rubble mound breakwater.
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U2 - 10.1142/9789814366489_0062
DO - 10.1142/9789814366489_0062
M3 - Conference contribution
AN - SCOPUS:85066746952
SN - 9789814366489
T3 - Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference
SP - 534
EP - 540
BT - Asian and Pacific Coasts, 2011 - Proceedings of the 6th International Conference
A2 - Lee, Joseph Hun-Wei
A2 - Ng, Chiu-On
PB - [publishername] World Scientific
T2 - 6th International Conference on Asian and Pacific Coasts, APAC 2011
Y2 - 14 December 2011 through 16 December 2011
ER -