Unclassified 



SECURITY CLASSIFICATION OF THIS PAGE 



REPORT DOCUMENTATION PAGE 



Form Approved 

 OMB No 0704-0188 

 Exp Date Jun30, 1986 



la. REPORT SECURITY CLASSIFICATION 



Unclassified 



1b. RESTRICTIVE MARKINGS 



2a. SECURITY CLASSIFICATION AUTHORITY 



2b DECLASSIFICATION /DOWNGRADING SCHEDULE 



DISTRIBUTION /AVAILABILITY OF REPORT 



Approved for public release; distribution 



4 PERFORMING ORGANIZATION REPORT NUMBER(S) 



Technical Report CERC-87-16 



5. MONITORING ORGANIZATION REPORT NUMBER(S) 



6a. NAME OF PERFORMING ORGANIZATION 

 USAEWES, Coastal Engineering 



Research Center 



6b. OFFICE SYMBOL 

 (If applicable) 



7a NAME OF MONITORING ORGANIZATION 



6c. ADDRESS {City, State, and ZIP Code) 



PO Box 631 



Vicksburg, MS 39180-0631 



7b ADDRESS (City, State, and ZIP Code) 



8a. NAME OF FUNDING /SPONSORING I 8b OFFICE SYMBOL 



ORGANIZATION i (If applicable) 



US Army Corps of Engineers 



9. PROCUREMENT INSTRUMENT IDENTIFICATION NUMBER 



8c. ADDRESS (City, State, and ZIP Code) 



Washington, DC 20314-1000 



10 SOURCE OF FUNDING NUMBERS 



WORK UNIT 

 ACCESSION NO 

 31673 



11 TITLE (Include Security Classification) 



Combined Reflection and Diffraction by a Vertical Wedge 



12. PERSONAL AUTHOR(S) 



Chen, H. S. 



13a. TYPE OF REPORT 



Final report 



13b TIME COVERED 

 FROM 



4. DATE OF REPORT {Year, Month, Day) 

 December 1987 



15. PAGE COUNT 

 75 



16. SUPPLEMENTARY NOTATION , . _„„_ _ _ ,„,„.,.,, 



Available from National Technical Information Service, 5285 Port Royal Road, Springfield, 

 VA 22161. 



COSATI CODES 



18. SUBJECT TERMS (Continue on reverse if necessary and identify by block number) 

 Breakwaters (LC) 

 Numerical analysis (LC) 

 Water waves (LC) 



19. ABSTRACT (Continue on reverse if necessary and identify by block number) 



This report presents an analytical solution for the combined wave reflection and 

 diffraction by a vertical wedge, of arbitrary wedge angle, subject to the excitation of a 

 plane simple harmonic wave train coming from a far field. Results of two special cases 

 are calculated: one a thin semi-infinite breakwater and the other a wedge of 90-deg 

 angle. The results are presented in amplification factor diagrams. A subroutine WEDGE 

 is also documented in the appendix. The subroutine can be used to calculate the case of 

 arbitrary wedge angle. 



20 DISTRIBUTION /AVAILABILITY OF ABSTRACT 

 IS UNCLASSIFIED/UNLIMITED □ SAME AS RPT. 



□ DTIC USERS 



21 ABSTRACT SECURITY CLASSIFICATION 



Unclassified 



22a. NAME OF RESPONSIBLE INDIVIDUAL 



22b TELEPHONE (Include Area Code) 22c OFFICE SYMBOL 



DO FORM 1 473, 84 mar 



83 APR edition may be used until exhausted. 

 All other editions are obsolete 



SECURITY CLASSIFICATION OF THIS PAGE 



Unclassified 



MBL/WHOI 



D 0301 OOTlEb? 1 



