Numerical Investigation on Wave Transmission by a Submerged Reef Using MIKE 3 WAVE FM

2020 ◽  
Author(s):  
Rahul Dev Raju ◽  
Madasamy Arockiasamy ◽  
Ranganathan Sundaravadivelu ◽  
Sherlin Prem Nishold Selvaraj
Keyword(s):  
Numerical Analysis ◽  
Numerical Investigation ◽  
Transmission Coefficient ◽  
Strong Dependence ◽  
Wave Transmission ◽  
Water Levels ◽  
Wave Steepness ◽  
Gradient Slope ◽  
Wave Transmission Coefficient ◽  
Submergence Depth

Abstract Wave transmission of a 1:10 gradient slope submerged reef is studied using MIKE 3 WAVE FM software. The study focuses on the effect of wave steepness and relative submergence depth over the reef on the wave transmission for three water levels. The results from the numerical analysis are compared with published literature on wave transmission of submerged structures. The results from the numerical analysis using MIKE 3 WAVE FM software show that the wave steepness and relative submergence depth over the reef have strong dependence on the wave transmission of submerged reef. The wave transmission coefficient shows a decreasing trend with increasing wave steepness.

scholarly journals THE PERFORMANCE OF NARROW AND BROAD-CRESTED SUBMERGED BREAKWATERS IN DISSIPATING WAVE HEIGHTS

2020 ◽  
Vol 82 (3) ◽  
Author(s):  
‘Izzat Na’im Ibrahim ◽  
Mohd Shahrizal Ab Razak ◽  
Badronissa Yusof ◽  
Safari Mat Desa
Keyword(s):  
Transmission Coefficient ◽  
Wave Energy ◽  
Wave Transmission ◽  
Relative Width ◽  
Wave Steepness ◽  
Submerged Breakwater ◽  
Wave Heights ◽  
Wave Transmission Coefficient

The main objective of this paper is to determine the wave transmission coefficient of an improved submerged breakwater called WABCORE. The objective is further explored to assess the effect of various parameters such as wave steepness, Hi/L, relative freeboard, R/d, and relative width of the top crest, B/L on wave transmission coefficient, KT. In general, as wave steepness increases, the wave transmissions decrease. Moreover wave transmission increases as relative freeboard increases. This is due to the fact that higher relative freeboard contains greater wave energy and hard to dissipate. As B/L increases, KT decreases. The effect of relative top crest width is insignificant as the freeboard increases. The transmission coefficient, KT derived from this study can be equated as  , valid for certain ranges. This study concludes that WABCORE is capable to dissipate wave energy.

Transmission of water waves through small apertures

1972 ◽  
Vol 55 (1) ◽  
pp. 149-161 ◽  
Author(s):  
D. C. Guiney ◽  
B. J. Noye ◽  
E. O. Tuck
Keyword(s):  
Shallow Water ◽  
Transmission Coefficient ◽  
Water Waves ◽  
Water Wave ◽  
Wave Transmission ◽  
Exact Theory ◽  
Vertical Barrier ◽  
Wave Transmission Coefficient

The water-wave transmission coefficient for a small slit in a thick vertical barrier is obtained theoretically and verified both experimentally and by comparison with an exact theory for the case of zero thickness. Similar shallow-water results are presented.

Wave Transmission over the Low-Crested Sand Container Breakwaters

2015 ◽  
Vol 802 ◽  
pp. 57-62
Author(s):  
Hee Min Teh
Keyword(s):  
Shallow Water ◽  
Transmission Coefficient ◽  
Water Depth ◽  
Wave Transmission ◽  
Experimental Result ◽  
Regular Waves ◽  
Wave Flume ◽  
Test Models ◽  
Wave Transmission Coefficient ◽  
Transmission Ability

Breakwaters made of sand container is one of the most economical options for wave protection at coastal areas. These breakwaters have been adopted with mixed success at several locations in Malaysia. Nevertheless, the performance of these structure has not been properly studied and documented to date. This study is undertaken to study the wave transmission ability of the submerged sand container breakwater with respect to its width and height as well as the water depth. A number of experiments have been conducted in a wave flume to quantify the wave transmission coefficient of the test models of different layouts when exposed to regular waves. The experimental result has shown that the breakwater is effective in arresting the shorter period waves, particularly in shallow water. The height of the breakwater has to be increased in order to arrest the longer period waves.

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