APPENDIX 

 FLOWCHART OF DIRECTIONAL WAVE ANALYSIS PROGRAM 



CALCULATE 

 WAVE 



NUMBER 



/ INPUT 



CURRENT^ 

 VELOCITY, U 



DETERMINE 

 ELECTRONIC 

 PHASE SHIFTS 



COMBINE 



CROSS SPECTRAL 



PHASES AND 



ELECTRONIC 



PHASE SHIFTS 



CALCULATE 



CO-INCIDENT 



SPECTRA 



CALCULATE 



ENERGY DENSTIES, E 



FOURIER COEFFICIENTS, As 



DIRECTION, 8 



RMS SPREADING, 8 e 



CALCULATE AND APPLY 



JACOBIAN TRANSFORMATIONS 



TO ENERGY DENSITIES AND 



WAVE FREQUENCIES 



CALCULATE _ 



SIGNIFICANT WAVE HEIGHT, (f„)1/3 



AVERAGE PERIOD, T z 



SPECTRAL BANDWIDTH PARAMETER, , 



BROADNESS PARAMETER, e 



I 



/ 





OUTPUT 







E 



if 



B,, A z , B, 

 v)„3. %, v 



ti 



"p 



COEFFICIENT 

 OF 



FOURIER SERIES 



CALCULATE 



ENERGY DISTRIBUTION 



BY FREQUENCY 



AND DIRECTION 



OUTPUT 



ENERGY 



DISTRIBUTION 



