Dimensioning file *.dim

Dimensioning file *.dim
SPRING-help >> Data structure of a groundwater model >> Settings and control files >>

As soon as a model has been created and saved for the first time, SPRING automatically creates a dimensioning file (*.dim).

Dimensioning is carried out on a "pseudo-variable" basis. This means that a fixed maximum number of nodes and elements is predefined. The larger this number is, the longer the necessary initialisation routines in the model check will take, even if the actually loaded project only requires a fraction of the predefined maximum number of nodes and elements.

Clever dimensioning thus reduces the calculation effort during the model check. If the selected dimensioning is too small, the dimensioning size in the dimensioning file can be changed by using a simple text editor.

 

Example:

IDIM1 270000 = IDIM2

IDIM2 270000 maximum node-/element number

IDIM3 100000 max. number boundary nodes, fractures and single data

IDIM4 100000 max. number MATE,MARK,KTXT,ETXT

IDIM5 14 max. number 3d-layer

IDIM6 5110000 temporary field, 3d: ca. idim1 * 51 , 2d: ca. idim1 * 20

 

Meaning of the dimensioning variables:

Field

Meaning

IDIM1

maximum number of nodes/elements

IDIM2

highest allowed node or element number

IDIM3

Maximum number of boundary nodes, fractures and point-data (e.g. potential heads (POTE), node inflows/outflows (KNOT), concentrations (1KON), ...)

IDIM4

maximum number of values for material data (MATE), markings (MARK), node and element texts (KTXT, ETXT)

IDIM5

maximum number of 3D layers

IDIM6

Auxiliary field for the optimisation algorithm (for 3D model approx. IDIM1 * 51, for a 2D model approx. IDIM1 * 20)

 

 

Initialization file plogeo.ini