渣三相流模型及渣层行为的研究

1、4410Vol.44No.1020081011981202ACTA METALLURGICA SINICA Oct. 2008pp.11981202 10:/1199,.,.,.18. Ri-denour 1,. Beskow 2. Lachmund3.Han4. Jonsson5. Ar, Krishnapisharody Irons 6, Froude. Yonezawa Schwerdtfeger 7Ar, ; 350t.,5, 8. Ridenour 1, , ,.Ar,.11.1,.t+·( v =0(1t( v +( v · v = p +·µ

2、;e ( v + v T + g (2, ; g; µe; v;p .Ar (VOF9. VOF.,.,1,g +st +sl =1(3, g , stslAr. , .q ,:q =0, ;q =1,;0<q <1,.=g g +st st +sl sl(4, g , stslAr.µ=g µg +st µst +sl µsl(5, µg , µstµslAr. VOFqqt+( v · q =0(6k ,t(k+xi (kui =xj µ+µt k kxj+G k +G

3、 b (7t(+xi (ui =xj µ+µt xj +C 1k(G k +G 3G b C 22k(8, u iu; µ k ; ; i , j ; C 1, C 2, C 3, k , ; G k,G k =ui u juj xi(9, u i , u ji, j.G b,G b =gµt Pr t xi(10, P r tPrandtl,µt kµt =Cµk 2(11, C µ. C 1=1.44, C 2=1.92,C 3=1.0,C µ=0.09,k =1.0,=1.3.1.2220t :3.

4、32m, 3.86m; 3.26m;0.050.15m; 0.15m,0.5m; Ar 100300L/min.1.120044 1Fig.1Geometries and meshes of ladles1.3 ,.,., Arv in =Q L A =(p S T L p L T S Q SA(12, L , S . T S =298K,T L =1873K, p S =101.325kPa, p L =p S +gh(, h. A , Q S Ar.k in =0. 04v 2in ,in =2k 3/Dpl (13, k in, in,v in, D pl.,.1.4Fluent . 4

5、68.48×102. Simple, :104. 90s,103s.2:Ar 200L/min,100mm, 100mm.2.1(Ar/24.2Ar ,Ar,Ar, .3,.42ArFig.2Argon gas rising passage in aladle3/Fig.3Molten steel surface congurationat interface be-tween molten steel and slag4Fig.4Slag layer distribution at main section of a ladle,.,.5,10:/1201 5Fig.5Veloci

6、ty distribution at main section of bottom gasstirring ladle at 41s1012., ,. 2.2.641s.,/.,. ,:(1; (2;(3.741s8. Ar. Ar300L/min, 100L/min 3.,., Ar., . 8Ar.,.9Ar.100mm, Ar 200L/min,660mm,2.1m;Ar 100L/min, 430mm, 1.35m. , , KrishnapisharodyIrons 6,6/Fig.6Slag layer congurationsof slag layer at interface

7、ofslagsteel(aand surface of slag layer (b050100150200250300350400S t e e l v e l o c i t y a r o u n d t h e s l a g e y e p e r i p h e r y , m /sAngular direction around the slag eye periphery, deg7ArFig.7Eectof argon gas owrate on steel velocity around the slag eye periphery8ArFig.8Eectof argon g

8、as owrate on the spout height inthe slagsteelinterface (unit:mmYonezawaSchwerdtfeger 7,.Froude (F r D =(/ ·(u 2/(gh (A e /H2, , H , A e ,10. ,.120244 9ArFig.9Variation of slag eye area with the argon gas owrates of 100L/min(a,200L/min(band 300L/min(c 10Froude Fig.10Dimensionless eye area vs mod

9、iedFroude number 0100200300400I n t e r f a c e w a v e f o r m a t i o n f r e q u e n c y , H zArgon gas flow rate, L/min11Ar/Fig.11Eectof argon gas owrate on the interface wavefrequency of slagsteel.,.Ar,11,Ar.3Ar,;,./. (1Ar100300L/min,0.430.81m. (2,.,; ,., Ar.(3Ar,.1Ridenour P, Yin H B, Balajee

10、S R, Chaubal P, Zhou Q.In:Ashburn R E ed., AIS Tech 2006Proceedings of the Iron and Steel Technology Conference , Cleveland, Ohio, 2006:7212Beskow K, Dayal P, Bjorkvall J, Nzotta M, Sichen D. Iron-mak Steelmak , 2006; 33:743Lachmund H, Xie Y K, Buhles T, Pluschkell W. Steel ResInt , 2003; 74:774Han

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