Transcription of レイノルズ数 - gpvjma.ccs.hpcc.jp
1 4 2006 11 13 ( ) (Reynolds number) (Reynolds number) (Osborne Reynolds) 2201jiijijixuxpxuutu + = + xLx1*=tLUt=* pUp20*1 =uUu1*= m m/s LU 2**2**jiijijixuULxpxuutu + = + Re1 /ReUL =ULRe m m/s /s kg/m s 22 ReLULUUL == / 22 LULU Re
2 Re Re 2000 ( ) , zyx,,t),,,(tzyxV),,,(tzyxV ( ) V),,,(**ttzzyyxxfVV =**,,,,tzyxV*Vx*xy*z*yzt*tV: x y z ( )
3 2**2**Re1jiijijixuxpxuutu + = + ,,LU roughness Reynolds number mm 10 /*hu*uh m/s m /s Froude number Fr ULggLUFr=
4 H gHU)( 40<Re<300 2 Re=105 50 60 5 6 terminal velocity
5 Terminal velocity kg/m s rw 6rwwrrw /Rewr= /=Re Re rw wwr Rerw 6 mgmgVVrmg 6= = 3)
6 3/4(rmw =w 922grVw= =msgmr 10= cmsm 1 rw 6 END Prandtl number Pr Schmidt number Sc Mach number cUMa Uc 10 8)
