TABLE 4 - RESISTANCE COEFFICIENTS OF THE WIGLEY PARABOLIC MODEL AT 

 TWO DIFFERENT TOWING TANKS (MODEL M1719) 





F L 



C T 



Experiment 



by Tamura 



C 

 w 



Numerical 



by Bai 



C T- C w 



Au/U 



Corrected 



Corrected 



Small 

 Tank 



0.325 

 0.350 

 0.375 

 0.400 

 0.425 



0.0353 

 0.0348 

 0.0397 

 0.0480 



0.00959 

 0.00981 

 0.01543 

 0.02364 

 0.03106 



0.0257 

 0.0250 



0.0243 

 0.0244 



0.0108 

 0.0113 

 0.0120 

 0.0128 



0.0251 

 0.0244 

 0.0237 

 0.0237 



0.329 

 0.354 

 0.380 

 0.405 



Large 

 Tank 



0.325 

 0.350 

 0.375 

 0.400 

 0.425 



0.0344 

 0.0331 

 0.0361 

 0.0414 



0.00971 

 0.00785 

 0.01203 

 0.01865 

 0.02487 



0.0247 

 0.0253 

 0.0241 

 0.0228 



0.0026 

 0.0027 

 0.0028 

 0.0029 



0.0246 

 0.0251 

 0.0240 

 0.0226 



0.326 

 0.351 

 0.376 

 0.401 



Values in both tanks are converted to the case without blockage. 



TABLE 5 



FRICTIONAL RESISTANCE COEFFICIENTS C^ AND C , 



F F 



COMPUTED FROM ITTC (1957) AND ATTC FRICTION FORMULAS, 

 AT A FRESHWATER TEMPERATURE OF 20 C 



F L 



R 

 n 



ITTC 1957 



ATTC 



C F 



C F 



S 



C F 



0.325 

 0.350 

 0.375 

 0.400 



3.861 x 10 6 

 4.158 x 10 6 

 4.455 x 10 6 

 4.752 x 10 6 



0.003565 

 0.003516 

 0.003470 

 0.003429 



0.0265 

 0.0261 

 0.0258 

 0.0255 



0.003444 

 0.003400 

 0.003360 

 0.003323 



0.0256 

 0.0253 

 0.0250 

 0.0247 



13 



