CFVR3402 - Dam with seepage surface
Dam model with seepage surface (water table).
An earth dam is modeled by a plane model. The aim of the example is to obtain the saturation line.
The model is made off a single material taken from CivilFEM's database (soil SC type):
Element types used in the model: PLANE42 Needed CivilFEM Modules: |
|
| Model Statistics | |
| Number of elements | 637 |
| Number of nodes | 704 |
| Number of civil materials | 1 |
| Number of cross sections | 0 |
| Number of shell vertices | 0 |
Log file: CFVR3402.DAT
FINISH ~CFCLEAR,,1 ~CFACTIV,GETC,Y NomFile='CFVR3402' /TITLE, %NomFile%, Dam with Seepage surface ! --------------------------------------------------------------------------------- ! Model definition ! --------------------------------------------------------------------------------- ! Activate Seepage Analysis ~SEEPAGE,2D /PREP7 ! Preprocessor ! -------------------------------------------------- ! Materials: Soil ~CFMP,1,LIB,SOIL,,SC ! Keypoints K,1,0,0 K,2,500,0 K,3,0,90 K,4,100,90 K,5,230,160 K,6,270,160 K,7,390.714285,95 K,8,400,90 K,9,500,90 ! Lines L,1,2 L,1,3 L,3,4 *REPEAT,6,1,1 L,9,2 ! Water Table X1 =211.4285 ! X initial point Y1 =150 ! Y initial point Z1 = 0 ! Z initial point X2 = 387 ! X end point Y2 = 97 ! Y end point Z2 = 0 ! Z end point NPOINTS= 12 ! Number of points dividing line Line1 = 4 ! Line over first point rest Line2 = 6 ! Line over second point rest MAT = 1 ! Material ~WATTAB,X1,Y1,Z1,X2,Y2,Z2,MAT,NPOINTS,Line1,Line2,FIXED,EXIT ! Finite element Model MAT = 1 ESIZE = 10 L1 = 1 L2 = 2 L3 = 3 L4 = 4 L5 = 7 L6 = 8 L7 = 9 L8 = 6 ~SEEPMOD,ADD,MAT ,WT ,ESIZE,L1 ,L2 ,L3 ,L4,L5,L6,L7,L8 ! Solution ! -------------------------------------------------- ! Displacements /SOLU HEAD1 = 95 HEAD2 = 150 SLine = 6 ~DLHEAD,add,7,head1 ~DLHEAD,add,8,head1 ~dlseep,ADD,SLine ~DLHEAD,add,4,head2 ~DLHEAD,add,3,head2 ~WTSOLVE /post1 file,file,seep set,last !-------------------------------------------------------------------------------------- ! DATA CHECK !-------------------------------------------------------------------------------------- ! Data comparison number NComp = 13 NComp_ch = 0 ! Matrix dim. *DIM,LABEL,CHAR,Ncomp,1 *DIM,LABEL_CH,CHAR,Ncomp_ch,1 *DIM,VALUE,,Ncomp,3 *DIM,VALUE_CH,CHAR,Ncomp_ch,3 *DIM,TOLER,,Ncomp,2 ! Labels LABEL(1,1) = 'POINT 1 ' LABEL(2,1) = 'POINT 2 ' LABEL(3,1) = 'POINT 3 ' LABEL(4,1) = 'POINT 4 ' LABEL(5,1) = 'POINT 5 ' LABEL(6,1) = 'POINT 6 ' LABEL(7,1) = 'POINT 7 ' LABEL(8,1) = 'POINT 8 ' LABEL(9,1) = 'POINT 9 ' LABEL(10,1) = 'POINT 10' LABEL(11,1) = 'POINT 11' LABEL(12,1) = 'POINT 12' LABEL(13,1) = 'POINT 13' ksel,s,kp,,11,23 nslk,s *do,ii,11,23 xx=KX(ii) yy=KY(ii) zz=0 NN=node(xx,yy,zz) ! Geometric heights VALUE(ii-10,2)=ky(ii) ! Piezometric heights *get,VALUE(ii-10,1),node,nn,head *enddo ! Warning and error tolerances *DO,II,1,13 TOLER(II,1) = 1.0 $ TOLER(II,2) = 1.0 *ENDDO !-------------------------------------------------------------------------------------- ! Results Comparison !-------------------------------------------------------------------------------------- COMPARA.MAC |
Results
| Label | Target | CivilFEM | Ratio | Tolerance |
| POINT 1 | 106.76 | 106.71 | 1.000 | 1 |
| POINT 2 | 144.15 | 144.13 | 1.000 | 1 |
| POINT 3 | 140.31 | 140.31 | 1.000 | 1 |
| POINT 4 | 137.07 | 137.07 | 1.000 | 1 |
| POINT 5 | 134.11 | 134.1 | 1.000 | 1 |
| POINT 6 | 131.28 | 131.28 | 1.000 | 1 |
| POINT 7 | 128.51 | 128.51 | 1.000 | 1 |
| POINT 8 | 125.76 | 125.76 | 1.000 | 1 |
| POINT 9 | 122.99 | 122.99 | 1.000 | 1 |
| POINT 10 | 120.16 | 120.16 | 1.000 | 1 |
| POINT 11 | 117.21 | 117.21 | 1.000 | 1 |
| POINT 12 | 114.09 | 114.09 | 1.000 | 1 |
| POINT 13 | 110.66 | 110.68 | 1.000 | 1 |
Contains proprietary and confidential information of Ingeciber, S.A.

