120 



xlO"" 





node # 1 









^-^^--^l 





2 



1 







-1 



-0.4 -0.3 -0.2 -0.1 



0.1 0.2 0.3 0.4 



-0.4 -0.3 -0.2 -0.1 



0.1 0.2 0.3 0.4 



Figure 5.39: Free surface boundary condition errors at the crest 

 of a sample wave in a flume 



0.04 

 0.02 

 

 -0.02- 



-0.06'- 



-0.4 -0.3 -0.2 -0.1 0.1 0.2 0.3 0.4 



toJz 



Figure 5.40: Computed and measured velocities near the crest 

 of a sample wave in a flume 







■■ ' 



' 





• 



-^^ ^ 





— LDV 

 --LFI 





/ / 

 ' 1 





^^""^ 



--^ 





