Frogi*ani Descripiion 



Program Title 105R Wave Transmission - Fuchs' Equation (RPN logic) 



Nam* T.L. Walton, Jr. D.t. 10/80 



Coastal Engineering Research Center 



Kingman Building _. , _. _ . 

 Ciiv , Stale . Zip Code „„„,„ 

 Fort Belvoir, Virginia 22060 



Program Description, Equations, Variable*, etc. 



This algorithm computes wavelength, L, in water depth, d, given the wave 

 period, T. The program then computes wave transmission over a thin verti- 

 cal barrier in water depth, d, using Fuchs' equation: 



Ht 



\ 



1 



Airh , , , Airh 

 L + ^^"^ L 



Hi 



\"^ + sinh ^^'^ 

 L L 



where H^ is the transmitted wave height, H^ the incident wave height, and 

 h the height of barrier. Note that this equation cannot be used when wave 

 transmission is by overtopping of a structure. Algorithm uses English or 

 metric system of units. 



REFERENCE 



U.S. ARMY, CORPS OF ENGINEERS, COASTAL ENGINEERING RESEARCH CENTER, Shore 

 Proteation Manual , 3d ed., Vol. II, Ch. 7, Stock No. 008-022-00113-1, 

 U.S. Government Printing Office, Washington, D.C., 1977, p. 7-62. 



Operating Limits end Warnings 



105R-1 



58 



