1.问题描述：一根弯管，里面有流体入口流体速度10m/s ，开放出口压力（opening），管道两端固支。现在想用 ansy s 和 cfx 的 MFX 的流固耦合做个练习，观察在水流冲击下管道的变形情况。 2.模型描述： 管道模型，网格，边界条件和接触面apdl /prep7 !Selection tolerance !set element ty pe et,1,shell63 ! 3-D 20-Node Stru ctu ral R,1,0.01, , , , , , !!set material mp,ex ,1,2.1E11 !You ng modu lu s mp,prx y ,1,0.3 !Poisson coefficient mp,dens,1,7800 !simple pipe model k,1, k,2,1 k,3,0,1 l,1,2 l,1,3 LFILLT,2,1,0.25, , LPLOT WPSTYLE,,,,,,,,1 KWPAVE, 2 wpro,,,-90.000000 CSYS,4 CYL4, , , ,0,0.1,90 CYL4, , , ,-90,0.1,0 VDRAG,1,2 , ,, , ,1,3,2 vglue,all vdele,all,,0 aplot FLST,2,6,5,ORDE,6 FITEM,2,4 FITEM,2,12 FITEM,2,20 FITEM,2,30 FITEM,2,33 FITEM,2,36 ADELE,P51X, , ,1 FLST,2,7,5,ORDE,7 FITEM,2,5 FITEM,2,-6 FITEM,2,13 FITEM,2,-14 FITEM,2,21 FITEM,2,28 FITEM,2,31 ADELE,P51X, , ,1 FLST,2,4,5,ORDE,4 FITEM,2,1 FITEM,2,22 FITEM,2,27 FITEM,2,34 ADELE,P51X, , ,1 aglue,all type,1 mat,1 real,1 esize,0.03 MSHAPE,0,2D MSHKEY,1 Amesh,all !boundary condition nsel,s,loc,x,0 D,all, , , , , ,ALL, , , , , nsel,s,loc,z,0 D,all, , , , , ,uz, , , , , allsel,all !set fsi condition sf,all,fsin,1 allsel save cdwrite,db,example_shell,cdb finish 流体模型，网格，边界集合 apdl /prep7 /prep7 et,2,fluid142,,,,1 !3D Fluid element with diplacement DOF option et,3,shell63 !Mesh only element (3D quad 4 nodes) to mesh surfaces used in CFXpre !Fluid domain geometry k,1, k,2,1 k,3,0,1 l,1,2 l,1,3 LFILLT,2,1,0.25, , LPLOT WPSTYLE,,,,,,,,1 KWPAVE, 2 wpro,,,-90.000000 CSYS,4 CYL4, , , ,0,0.1,90 CYL4, , , ,-90,0.1,0 VDRAG,1,2 , ,, , ,1,3,2 vglue,all aplot !Fluid domain meshing allsel type,2 mat,2 esize,0.02 vsweep,all !FSI interface surface mesh asel,s,,,3 asel,a,,,11 asel,a,,,19 asel,a,,,29 asel,a,,,32 asel,a,...
