PIPINGSYSTEM:UNDERGROUND:DOMAIN

The ground domain object for underground piping system simulation.

Name

Type: alphanumeric

Xmax

Type: real number
Domain extent in the local 'X' direction
Unit: m

Ymax

Type: real number
Domain extent in the local 'Y' direction
Unit: m

Zmax

Type: real number
Domain extent in the local 'Y' direction
Unit: m

X-Direction Mesh Density Parameter

Type: integer
If mesh type is symmetric geometric, this should be an even number.
Default: 4

X-Direction Mesh Type

Type: choice (Uniform or SymmetricGeometric)

X-Direction Geometric Coefficient

Type: real number
Optional Only used if mesh type is symmetric geometric
Minimum: 1
Maximum: 2
Default: 1.3

Y-Direction Mesh Density Parameter

Type: integer
If mesh type is symmetric geometric, this should be an even number.
Default: 4

Y-Direction Mesh Type

Type: choice (Uniform or SymmetricGeometric)

Y-Direction Geometric Coefficient

Type: real number
Optional Only used if mesh type is symmetric geometric
Minimum: 1
Maximum: 2
Default: 1.3

Z-Direction Mesh Density Parameter

Type: integer
If mesh type is symmetric geometric, this should be an even number.
Default: 4

Z-Direction Mesh Type

Type: choice (Uniform or SymmetricGeometric)

Z-Direction Geometric Coefficient

Type: real number
Optional Only used if mesh type is symmetric geometric
Minimum: 1
Maximum: 2
Default: 1.3

Soil Thermal Conductivity

Type: real number
Unit: W/m-K

Soil Density

Type: real number
Unit: kg/m3

Soil Specific Heat

Type: real number
This is a dry soil property, which is adjusted for freezing effects by the simulation algorithm.
Unit: J/kg-K

Soil Moisture Content Volume Fraction

Type: real number
Unit: percent
Minimum: 0
Maximum: 100
Default: 30

Soil Moisture Content Volume Fraction at Saturation

Type: real number
Unit: percent
Minimum: 0
Maximum: 100
Default: 50

Undisturbed Ground Temperature Model Type

Type: choice (Site:GroundTemperature:Undisturbed:FiniteDifference, Site:GroundTemperature:Undisturbed:KusudaAchenbach or Site:GroundTemperature:Undisturbed:Xing)

Undisturbed Ground Temperature Model Name

Type: list of objects (SITE:GROUNDTEMPERATURE:UNDISTURBED:XING, SITE:GROUNDTEMPERATURE:UNDISTURBED:KUSUDAACHENBACH or SITE:GROUNDTEMPERATURE:UNDISTURBED:FINITEDIFFERENCE)

This Domain Includes Basement Surface Interaction

Type: choice (Yes or No)
If Yes, then the following basement inputs are used if No, then the following basement inputs are *ignored*
Default: No

Width of Basement Floor in Ground Domain

Type: real number
Required only if Domain Has Basement Interaction
Unit: m

Depth of Basement Wall In Ground Domain

Type: real number
Required only if Domain Has Basement Interaction
Unit: m

Shift Pipe X Coordinates By Basement Width

Type: choice (Yes or No)
Required only if Domain Has Basement Interaction

Name of Basement Wall Boundary Condition Model

Type: list of objects ( or SURFACEPROPERTY:OTHERSIDECONDITIONSMODEL)
Required only if Domain Has Basement Interaction

Name of Basement Floor Boundary Condition Model

Type: list of objects ( or SURFACEPROPERTY:OTHERSIDECONDITIONSMODEL)
Required only if Domain Has Basement Interaction

Convergence Criterion for the Outer Cartesian Domain Iteration Loop

Type: real number
Unit: deltaC
Minimum: 0.000001
Maximum: 0.5
Default: 0.001

Maximum Iterations in the Outer Cartesian Domain Iteration Loop

Type: integer
Minimum: 3
Maximum: 10000
Default: 500

Evapotranspiration Ground Cover Parameter

Type: real number
This specifies the ground cover effects during evapotranspiration calculations. The value roughly represents the following cases: = 0 : concrete or other solid, non-permeable ground surface material = 0.5 : short grass, much like a manicured lawn = 1 : standard reference state (12 cm grass) = 1.5 : wild growth
Minimum: 0
Maximum: 1.5
Default: 0.4

Number of Pipe Circuits Entered for this Domain

Type: integer
Minimum: 1

Pipe Circuit 1

Type: list of objects ( or PIPINGSYSTEM:UNDERGROUND:PIPECIRCUIT)
Name of a pipe circuit to be simulated in this domain