DATA SET 2: BASIC INTEGER PARAMETERS
Basic integer parameters: the job flow control integer parameters. This
data set must be proceeded by a data description line. Three records
of free format are required. The first record indicates the dimensionality
of the problem by specifying the following variable:
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IDIM = Dimensionality of the problem (1, 2, or 3).
The second record contains the following variables:
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1. NNP = Number of nodal points.
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2. NEL = Number of elements.
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3. NDF = Number of pore regions.
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4. NMAT = Number of material types.
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5. NCM = Number of elements with material property correction.
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6. NTI = Number of time steps or time increments.
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7. KSS = Steady state control, 0 = steady state solution desired, 1 = transient
state or transient solutions.
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8. NMPPM = No. of material properties per material.
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9. KSTR = indicator to controlling job restart. Input 0 for no or 1 for
yes. If the job is a restarted one, the nodal coordinates, node connectivity
information, the pressure head and variable boundary indexing arrays must
be supplied via appropriately designated logical units. See the section
LOGICAL UNITS for the specifications.
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10. KGRAV = Gravity term control; 0 = no gravity term, 1 = with gravity
term.
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11. NITER = Number of iterations allowed for solving the non-linear equation.
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12. NPITER = No. of iterations for point blockwise solution.
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13. NCYL = No. of cycles permitted for iterating rainfall-seepage boundary
conditions per time step.
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14. NDTCHG = No. of times to reset time step size to initial time step
size.
The third record contains the following variables:
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1. ILUMP = Is mass lumping? 0 = no, 1 = yes.
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2. IMID = Is mid-difference? 0 = no, 1 = yes.
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3. IMSOLV = indicator for sparse matrix solver
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1 = point blockwise iterative solver.
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2 = polynomial preconditioned conjugate gradient solver.
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3 = diagonal preconditioned conjugate gradient solver.
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4. KEXCF = indicator for mass transfer formulation (disabled).
NOTE: NTI can be computed by NTI = I1 + 1 + I2 + 1, where I1
= largest integer not exceeding Log(DELMAX/DELT) / Log(1+CHNG), I2 = largest
integer not exceeding (RTIME-DELT*((1+CHNG)**(I1+1)-1)/CHNG) / DELMAX,
RTIME = Real simulation time, DELMAX,DELT,and CHNG are defined in Data
Set 3.
NOTE ON STEADY STATE INPUT: Steady state option may be used
to provide either the final state of a system under study or the initial
conditions for a transient state calculation. In former case KSS = 0 and
NTI = 0, and in the latter case KSS = 0 and NTI > 0. If KSS > 0, there
will be no steady state calculation.
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