*HEADING
ONE DIMENSIONAL COUPLED DEMAND WETTABILITY, WITH GEL, QUADRATIC ELEMENTS
*** UNITS: M, SEC, NEWTON
*NODE,NSET=ALLN
1,0.,0.
3,.00508,0.
101,0.,8.55637e-2
103,.00508,8.55637e-2
*NGEN,NSET=BOT
1,3,1
*NGEN,NSET=TOP
101,103,1
*NFILL,NSET=ALLN
BOT,TOP,20,5
*NSET,NSET=LHS,GENERATE
1,101,5
*NSET,NSET=RHS,GENERATE
3,103,5
*NSET,NSET=PORN,GENERATE
1,101,10
3,103,10
*ELEMENT,TYPE=CPE8RP,ELSET=BLOCK
1,1,3,13,11,2,8,12,6
*ELGEN,ELSET=BLOCK
1,10,10,1
*ELSET,ELSET=OUTE
1,3,5,7,9
*******************************************
*SOLID SECTION,ELSET=BLOCK,MATERIAL=CORE
.02, 
*MATERIAL,NAME=CORE
*ELASTIC
10000.,0.
*POROUS BULK MODULI
 ,2.E9
*PERMEABILITY,SPECIFIC=10000.
3.7E-4, 
*SORPTION
-100000.,.04
-10000.,.05
-4500.,.1
-3500.,.18
-2000.,.45
-1000.,.91
0.,1.
*SORPTION,TYPE=EXSORPTION
-100000.,.09
-10000.,.1
-8000.,.11
-6000.,.18
-4500.,.33
-3000.,.79
-2000.,.91
0.,1.
*GEL
.0005,.0015,1.E8,500.
*********
*BOUNDARY
BOT,2
ALLN,1
*RESTART,WRITE,FREQUENCY=10
*map solution, step = 2, unbalanced stress=step
*******************************************
*STEP,INC=100,NLGEOM
*SOILS,CONSOLIDATION,UTOL=10000.
1.,2000.,,300.
*BOUNDARY
1,8,,-100.
3,8,,-100.
*CONTROLS,ANALYSIS=DISCONTINUOUS
*OUTPUT,FIELD
*NODE OUTPUT,NSET=ALLN
 U,POR
*ELEMENT OUTPUT,ELSET=BLOCK
 S,SAT,VOIDR,GELVR,POR
*OUTPUT,HISTORY
*NODE OUTPUT,NSET=LHS
 U,RF,POR,RVT
*ELEMENT OUTPUT,ELSET=OUTE
 S22,POR,GELVR,SAT,VOIDR
*END STEP