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CFVR3401 - Dupuit problem

Dupuit problem to check the saturation line obtained by CivilFEM.

A plane model is used to reproduce the Dupuit problem to check the saturation line obtained by CivilFEM.
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:
Geotechnical Module
Bridges and Civil Non Linearities Module
Advanced Prestressed Concrete Module

The example can be launched on an educational license.
KEYWORDS
Geotechnics
Seepage Analysis

Model Statistics
Number of elements 136
Number of nodes 167
Number of civil materials 1
Number of cross sections 0
Number of shell vertices 0

Log file: CFVR3401.DAT


   FINISH
  ~CFCLEAR,,1
  ~CFACTIV,GETC,Y
  NomFile='CFVR3401'
  /TITLE, %NomFile%, Dupuit problem

! ---------------------------------------------------------------------------------
! Model definition
! ---------------------------------------------------------------------------------
! Activate Seepage Analysis
~SEEPAGE,2D

/PREP7
! Preprocessor
! --------------------------------------------------
! Materials: Soil
  ~CFMP,1,LIB,SOIL,,SC

! Keypoints
  K,1,0,0
  K,2,0,10
  K,3,10,0
  K,4,10,3
  K,5,10,10

! Lines
  L,1,2
  L,3,4
  L,4,5
  L,1,3

! Water Table
  X1     =  0      ! X initial point
  Y1     = 10      ! Y initial point
  Z1     =  0      ! Z initial point
  X2     = 10      ! X end point
  Y2     =  4      ! Y end point
  Z2     =  0      ! Z end point
  NPOINTS= 12      ! Number of points dividing line
  Line1  =  1      ! Line over first point rest
  Line2  =  3      ! 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 =  0.8
  L1    = 1
  L2    = 2
  L3    = 3
  L4    = 4
  ~SEEPMOD,ADD,MAT ,WT ,ESIZE,L1 ,L2 ,L3 ,L4

 ! Solution
 ! --------------------------------------------------
 ! Displacements
  /SOLU
  ~DLSEEP,ADD,4
  ~DLHEAD,ADD,2,4
  ~DLHEAD,ADD,3,4
  ~DLHEAD,ADD,1,10

  ~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,,6,18
nslk,s
*do,ik,6,18
  ksel,s,kp,,ik
  nslk,s
  ii = ik-5
  ! Geometric heights
  VALUE(ii,2)=ky(ik)
  ! Piezometric heights
  *get,VALUE(ii,1),node,ndnext(0),head
*enddo

! Warning and error tolerances
  *DO,II,1,13
    TOLER(II, 1)= 0.2
    TOLER(II, 2)= 0.2
  *ENDDO

!--------------------------------------------------------------------------------------
! Results Comparison
!--------------------------------------------------------------------------------------
  COMPARA.MAC

Results

LabelTargetCivilFEMRatioTolerance
POINT 1 4 4.00031.000 0.2
POINT 2 9.7592 9.75931.000 0.2
POINT 3 9.4165 9.41681.000 0.2
POINT 4 8.9796 8.98131.000 0.2
POINT 5 8.4615 8.46630.999 0.2
POINT 6 7.8462 7.84511.000 0.2
POINT 7 7.1233 7.11851.001 0.2
POINT 8 6.1723 6.17171.000 0.2
POINT 9 5.4321 5.43041.000 0.2
POINT 10 2.2444 2.24191.001 0.2
POINT 11 2.1788 2.180.999 0.2
POINT 12 3.2089 3.21090.999 0.2
POINT 13 3.6986 3.69791.000 0.2


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