IFM Constants
Each FEFLOW material property (elemental-based) has its own definition in the IFM Programming Interface. They are distinguished by an unique identified (IfmParamID). The following table shows the list of most common material properties for the problem classes Flow, Mass and Heat. Further details can be found in document.h, which is automatically appended to each plug-in project.
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IFM Parameter names can be used under the FEFLOW - Python Interface by using deleting the three letters "ifm" before the parameter name. For example IfmP_COND becomes P_COND if parameter is referred in a Python script. |
The FEFLOW Python module ifm offers a sub-module named Enum, which provides easy framework to modify FEFLOW parameters from information stored in Python list. An example is shown below.
import ifmfrom ifm import Enumdemo_fem = 'quadri.fem'doc = ifm.loadDocument(demo_fem)ne = doc.getNumberOfElements()souf = []for e in range(0, ne): souf.append(0.01)doc.setParamValues(Enum.P_SOUF, souf)
Flow-Related Parameters
| IFM Name | ID | Parameter Full Name |
|---|---|---|
| IfmP_COND | 100 | Transmissivity or conductivity |
| IfmP_CONDX | 101 | Conductivity in x-direction for 3D |
| IfmP_ANIS | 102 | Anisotropy factor |
| IfmP_CONDY | 103 | Conductivity in y-direction for 3D |
| IfmP_ANGL | 104 | Anisotropy angle |
| IfmP_CONDZ | 105 | Conductivity in z-direction for 3D |
| IfmP_BOTT | 106 | Aquifer bottom elevation |
| IfmP_IOFLOW | 107 | In/outflow on top or bottom for 3D |
| IfmP_TOPS | 108 | Aquifer top elevation |
| IfmP_DENS | 109 | Density ratio for 3D and/or thermohaline transport |
| IfmP_STOR | 110 | Storativity (drain- or fillable) or density ratio |
| IfmP_EXPAN | 111 | Volumetric expansion coefficient for heat transport |
| IfmP_COMP | 112 | Storage compressibility |
| IfmP_SOUF | 113 | Source/sink for flow |
| IfmP_TRAF_IN | 114 | Transfer rate for inflow |
| IfmP_TRAF_OUT | 115 | Transfer rate for outflow |
| IfmP_PM_TYPE | 116 | Coded parametric unsaturated model type |
| IfmP_UPORO | 117 | Porosity (used for unsaturated storativity) |
| IfmP_MAX_SAT | 118 | Maximum saturation (Ss) |
| IfmP_RES_SAT | 119 | Residual saturation (Sr) |
| IfmP_FIT_COEFF | 120 | Fitting coefficient in capillary head (A) or (Alpha) |
| IfmP_FIT_EXPO | 121 | Fitting exponent in capillary head curve (n), (B) or (Beta) |
| IfmP_FIT_EXPO2 | 122 | Fitting exponent or coefficient in relative conductivity curve (delta) or (A) |
| IfmP_FIT_EXPO3 | 123 | Fitting exponent in relative conductivity curve (B) |
| IfmP_AEPH | 124 | Air-entry pressure head |
| IfmP_TRANS_OLD | 125 | Formerly defined transmissivity (do not use!!!) |
| IfmP_TRANS | 126 | Transmissivity |
| IfmP_MAX_SAT_D | 127 | (Ss) - drying curve |
| IfmP_RES_SAT_D | 128 | (Sr) - drying curve |
| IfmP_FIT_COEFF_D | 129 | (A) or (Alpha) - drying curve |
| IfmP_FIT_EXPO_D | 130 | (n), (B) or (Beta) - drying curve |
| IfmP_FIT_EXPO2_D | 131 | (delta) or (A) - drying curve |
| IfmP_FIT_EXPO3_D | 132 | (B) - drying curve |
| IfmP_AEPH_D | 133 | Air-entry pressure head - drying curve |
| IfmP_ANGLE_PHI | 134 | Euler phi-angle for general 3D anisotropy of conductivity |
| IfmP_ANGLE_PSI | 135 | Euler psi-angle for general 3D anisotropy of conductivity |
| IfmP_ANGLE_THETA | 136 | Euler theta-angle for general 3D anisotropy of conductivity |
| IfmP_INACTIVE_ELE | 137 | Inactive elements (pseudo material) |
Mass-Related Parameters
| IFM Name | ID | Parameter Full Name |
|---|---|---|
| IfmP_ATHI | 200 | Aquifer thickness |
| IfmP_PORO | 201 | Porosity |
| IfmP_SORP | 202 | Sorption coefficient |
| IfmP_DIFF | 203 | Molecular diffusion |
| IfmP_LDIS | 204 | Longitudinal dispersivity |
| IfmP_TDIS | 205 | Transverse dispersivity |
| IfmP_DECA | 206 | Decay rate |
| IfmP_SOUT | 207 | Source/sink for transport |
| IfmP_TRAT_IN | 208 | Transfer rate for influxing transport |
| IfmP_TRAT_OUT | 209 | Transfer rate for outfluxing transport |
| IfmP_SORP2 | 210 | Additional sorption coefficient for the Freundlich or Langmuir isotherm |
| IfmP_DECA2 | 211 | Additional reaction coefficient for Michaelis-Menten mechanism |
| IfmP_DISP_BETA | 212 | Additional dispersion coefficient for nonlinear dispersion |
| IfmP_MULT_DENS | 213 | Multiple (species-dependent) density ratio |
| IfmP_SOLFRAC | 214 | Solid-volume fraction (used instead of porosity for solid-phase species) |
Heat-Related Parameters
| IFM Name | ID | Parameter Full Name |
|---|---|---|
| IfmP_ATHIH | 300 | Aquifer thickness (heat) |
| IfmP_POROH | 301 | Porosity (heat) |
| IfmP_CAPACS | 302 | Volumetric heat capacity of solid |
| IfmP_CONDUCS | 303 | Heat conductivity of solid |
| IfmP_LDISH | 304 | Longitudinal thermo-dispersivity |
| IfmP_TDISH | 305 | Transverse thermo-dispersivity |
| IfmP_SOURCF | 306 | Heat source/sink of fluid |
| IfmP_SOURCS | 307 | Heat source/sink of solid |
| IfmP_TRAH_IN | 308 | Thermo-transfer rate for influxing transport |
| IfmP_TRAH_OUT | 309 | Thermo-transfer rate for outfluxing transport |
| IfmP_CAPACF | 310 | Volumetric heat capacity of fluid |
| IfmP_CONDUCF | 311 | Heat conductivity of fluid |
| IfmP_ANISH | 312 | Anisotropy factor of solid heat conductivity |