Table 5-2. Comparison of various approaches for determination of basic scale 

 ratios of a coastal movable-bed model. 



Source 



Basic relations 



Method of derivation 



Goddet and Jaffry 

 (1960) 



nD=M^7/20^8/5 

 n^,= ^3/20^^/5" 



Sediment motion due to com- 

 bined action of waves and 

 currents 



Valembois 

 (1960) 



n = n^.-i 



n^.n^ = 1 



3 M^ 



Kinematics of motion of sus- 

 pended sediments 



Similitude of D* 



Modified relation of initiation of 

 sediment motion: D^ = KR8/9 



Yalin 

 (1963) 



nD=M3/4\l/2 



Dimensional analysis 



Bijker 

 (1967) 



n •<- equilibrium beach profiles 



Similitude of F* 



SEE NOTE: 



Fan and Le Mehaute 

 (1969) 



n^.n^=l 

 ny=M3x-3/2 or n^ = Xl/2;,-l 

 fi •<- equilibrium beach profiles 



Similitude of sediment transport 

 characteristics, i.e., F* and R* 



Noda 

 (1971) 



nDnyl«4=M0-55 



X = ^1.32^^-0386 

 ^ •«- equilibrium beach profiles 



Similitude of sediment transport 

 characteristics; i.e., F* and R* 



Note: Although this basic relation was noted to be in error, it was not corrected. 



289 



