CONTENTS 



% FIGURES— Continued 



Page 



26 Measured peak water around side-by-side circular and 



finned circular piles 50 



27 [W(^/W] patterns for two H-piles and flat plate as W 



increases 51 



28 [W(6)/W] patterns for two H-piles and flat plate for 



high waves at low and high periods 52 



29 Waveforms measured in channel of 2x1 H-pile at four 



orientations 53 



30 (a) Definition of angle 6 describing channel geometry 



of pile; (b) hypothetical flow streamlines for yaw angle 



B < e a^ 3 > e (assuming no circulation) 54 



31 [W("6)/¥] patterns for five H-piles with maximum horizontal 



fluid orbit 55 



32 WCB") patterns for 1x1 and 3x3 H-piles 57 



33 WCl") patterns for 1x1 and 2x2 H-piles 57 



34 Normalized patterns of HC?) and first and second angular 



differences for 2x2 H-pile in tfiree situations 58 



35 Photo from rear of disturbance at 2x2 H-pile during crest 



flow in the 1 .5-foot-wide tank 61 



36 Flow regimes indicated by measured drag coefficient at a 



circular cylinder 62 



37 Varying sections to reduce design wave force on pile 



segment near water surface 65 



38 Schematic operation of proposed nearshore wave direction 



gage using a circular pile 66 



