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laws:qmlc
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QMLC
Description
Constitutive law for flow mixed limit condition for element Q2MLC
The model
This law is only used for non linear flow analysis of solids. This constitutive law allows to impose a uniform flow mixed limit condition on a boundary.
The retention curve allows to divide the imposed total flow among a water flow and a gas flow, according the saturation degree.
Files
Prepro: LQMLC.F
Availability
| Plane stress state | YES |
| Plane strain state | YES |
| Axisymmetric state | YES |
| 3D state | YES |
| Generalized plane state | YES |
Input file
Parameters defining the type of constitutive law
| Line 1 (2I5, 60A1) | |
|---|---|
| IL | Law number |
| ITYPE | 196 |
| COMMENT | Any comment (up to 60 characters) that will be reproduced on the output listing |
Integer parameters
| Line 1 (I5) | |
|---|---|
| ISRW | formulation index for $S_w$ : (see Appendix 8) |
| $\neq$ 0 in case of seepage with free surface | |
| = 0 in absence of free surface | |
Real parameters
| Line 1 (2G10.0) | |
|---|---|
| FLUXF | total flow per unit surface |
| FLUXD | total flow per unit surface |
| Line 2 (7G10.0) | |
| CSR1 | 1st coefficient of the function $S_W$ |
| CSR2 | 2nd coefficient of the function $S_W$ |
| CSR3 | 3rd coefficient of the function $S_W$ |
| CSR4 | 4th coefficient of the function $S_W$ |
| SRES | residual saturation degree $(=S_{res})$ |
| SRFIELD | field saturation degree $(=S_{rfiled})$ |
| AIREV | air entry value $\left[Pa\right]$ |
During the non linear analysis, FLUXF will be multiplied by the force multiplicator ALAMBF while FLUXD will be multiplied by the displacement multiplicator ALAMBD.
An outgoing flow is considered as positive.
An entering flow is considered as negative.
Stresses
Number of stresses
2
Meaning (numerical, not physical)
| SIG(1) | current value of distributed water flow |
| SIG(2) | current value of distributed gas flow |
State variables
Number of state variables
3
List of state variables
| Q(1) | Saturation degree |
| Q(2) | Water Mass flow $\left[kg/s\right]$ |
| Q(3) | Oil Mass flow $\left[kg/s\right]$ |
laws/qmlc.txt · Last modified: 2020/08/25 15:46 (external edit)
