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ÒÑÖª·½³Ìtwl*Sl/Al-twg(Sg/Ag+ti/twg(Si/Al+Si/Ag))+(rol-rog)*g*sin(st)=0ÊÇhlµÄÒþʽ·½³Ì£¬ÈçºÎͨ¹ýµü´úÇó½âhlµÄÖµ¡£ÆäÖУºstΪÒÑÖªÊý£¬·½³ÌÖÐÆäËû²ÎÊý±í´ïʽÈçÏÂ
det=2*acos(1-2*hl/d)
HL=(det-sin(det))/(2*pi)
Al=pi*d^2*HL/4
Ag=pi*d^2*(1-HL)/4
Sl=det*d/2
Sg=pi*d-Sl
Si=2*(hl(d-hl))^0.5l))^0.5
dg=4*Ag/(Sg+Si)
dl=4*Al/Sl
wl=Ql/Al
wg=Qg/Ag
Rel=rol*dl*wl/ul
Reg=rog*dg*wg/ug
fg=16/Reg
fl=16/Rel
twl=fl*rol*wl^2/2
twg=fg*rog*wg^2/2
wsgt=5*(0.101325/P_)^0.5
if  wsg<=wsgt   
          fi=fg
else  
          fi=fg(1+15*(hl/d)^0.5*(wsg/wsgt-1))
end
ti=fi*rog*wg^2/2
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