Transcription of 乱流促進による流体抵抗低減 - lemons.k.u-tokyo ...
1 1 1 E 1 2 A B C B =+fluid potentialfor everywhereconstant fluidperfect for streamlineeach alongconstant 221Up (1) +=zazUW2 (2) irez= (1) cos122 += raUr (3) A B C r 2 sin1122 + = =raUrv (4) ar= sin2Uv = (5) 0 ()()()12cos2sin4122122212221 = = = UUvUp (6) -3-2-1010 45 90 135 180theta (degree)Cp 0 0 3 3 0= =yyuF (7) ()
2 = 2 UdRe= 4 202=Re x y x u 5 221yuxpyuvxuu + = + (8) ()0==vu 22yuxp = (9) )0(< xp (9) 022< yu (10) )0(> xp (9) 022> yu (11) (11) 6 2 6 SUDCD221 = (12) DC D S 101 103 105 105 106 85 120 =Re =Re 7 9 =Re =Re 9 1998 10 8 10 3
3 4 4
