hs^ 66cm 

 I on 1.^ Slope 



0-0065 

 0.0131 

 0-0161 

 0-0226 

 0-0363 

 0-0555 



BW3 



1.0 



0.8 



0.6 



0.4 



0.2 





 00001 



Submerged Breakwater 

 do/h - 1.14 



J L_L 



J L_l 



0.001 



1.0 

 0.8 

 0.6 

 0.4 

 0.2 



- BW3W 



No Overtopping 



Overtopping 



0.01 



Suboerlal Breakwater 

 ds/h:0.93 



J I L 



0.0001 



0.001 

 H/gT^ 



0.01 



Figure 30. Wave transmission coefficients for a 

 subaerial and a submerged breakwater. 



predict coefficients for any size breakwater, useful when designing or assessing 

 scale effects in small-scale physical models (see Sec. V). 



The Madsen and White model was designed for manual use, but because of the 

 many calculations and iterations necessary, manual calculation is tedious. The 

 model was automated as a part of this study in a FORTRAN computer program, 

 MADSEN (App. G) to simplify use of the model. Advantages of the computer pro- 

 gram are that only a few input cards are required to model even a breakwater 

 with complex geometry and the program computer cost is very low. The program 

 includes all the generality in the original model, and the wave transmission by 

 overtopping model developed in Section IV, 1 is also incorporated. Since the 

 Madsen and White (1976) technique is complex, reference is made to their publi- 

 cation for details of the model. A brief summary of the major steps in the 

 model and computer program is given below; additional information on the com- 

 puter program is given in Appendix G. 



42 



