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READ INSTRUCTIONS 

 BEFORE COMPLETING FORM 



1. REPORT NUMBER 



TP 78-1 



2. GOVT ACCESSION NO 



3. RECIPIENT'S CATALOG NUMBER 



4. TITLE (and Subtitle) 



WAVE TRANSFORMATION AT ISOLATED VERTICAL PILES 

 IN SHALLOW WATER 



5. TYPE OF REPORT & PERIOD COVERED 



Technical Paper 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORfa; 



Robert J. Hallermeier 

 Robert E. Ray 



8. CONTRACT OR GRANT NUMBERfoJ 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center (CERRE-CP) 



Kingman Building, Fort Belvoir, Virginia 22060 



A31222 



11. CONTROLLING OFFICE NAME AND ADDRESS 



Department of the Army 



Coastal Engineering Research Center 



Kingman Building, Fort Belvoir, Virginia 22060 



12. REPORT DATE 



March 1978 



13. NUMBER OF PAGES 



187 



14. MONITORING AGENCY NAME & ADDRESSf// dlf/srent from Controlling Ottlce) 



IS. SECURITY CLASS, (ol thia report) 



UNCLASSIFIED 



16. DISTRIBUTION STATEMENT (ol thIa Report) 



Approved for public release, distribution unlimited. 



17. DISTRIBUTION STATEMENT (ol the abatract entered In Block 30, II ditterent ttom Report) 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Continu 



reverae aide It neceaaary and Identity by block t 



Channeled piles 

 Circular piles ' 

 Surface effects 

 Velocity head 



r,ber) 



Wave direction gage 



Wave forces 



Wave runup 



Wave transformation 



2Q. ABSTRACT (Caatbuim ea rmvarwa at^ tf t iai-eaaa ry mid. Idenlity try block number) 



Water level was measured within the flanges of a channeled pile, or near 

 the surface of a circular pile, for isolated piles in a periodic wave train. 

 Measurements are plotted as 160 patterns of crest height versus orientation 

 with respect to wave direction. All patterns have a maximum at tiie front, 

 facing into the wave, and a lesser maximum at the rear. Intervening minimums 

 are symmetrically located at the sides of the pattern, usually slightly toward 

 the rear. As wave height increases, the front maximum becomes higher, 

 (continued) 





1473 



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