# Parameter Registry

This registry maps the current hard-coded parameters to a unified `config` structure.
It is intentionally field-oriented so the future GUI can be built against a stable schema.

## Conventions

- `Config Path`: target field in the unified config
- `Source Variable`: current variable name in code
- `Source File`: current MATLAB file where the parameter is defined
- `Cases`: which example folders currently use the field
- `Editable`: whether the GUI should expose the field
- `Notes`: behavior, enum meaning, or shape

## Meta

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `meta.case_name` | none | template-level | all | yes | Display name |
| `meta.case_id` | none | template-level | all | yes | Stable preset ID |
| `meta.description` | none | template-level | all | yes | Free text |
| `meta.source_case_folder` | folder name | template-level | all | no | Traceability |
| `meta.created_from_template` | none | template-level | all | no | Preset source |
| `meta.version` | none | config system | all | no | Schema version |

## Model

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `model.grid_model` | `grid_model` | `main1.m` | 1-7 | yes | `1` SP, `2` DP |
| `model.flow_model` | `flow_model` | `main1.m` | 1-7 | yes | `1` gas-water, `2` oil-water, `3` multi-component |

Current GUI/runtime simplification:

- `modelflag` has been removed from the editable config schema.
- Runtime always uses `modelflag = 1`.

## Grid Geometry

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `grid.dx` | `dx` | `main1.m` | 1-7 | yes | Vector |
| `grid.dy` | `dy` | `main1.m` | 1-7 | yes | Vector |
| `grid.dz` | `dz` | `main1.m` | 1-7 | yes | Vector |
| `grid.nx` | `nx` | `main1.m` | 1-7 | no | Derived from `dx` |
| `grid.ny` | `ny` | `main1.m` | 1-7 | no | Derived from `dy` |
| `grid.nz` | `nz` | `main1.m` | 1-7 | no | Derived from `dz` |
| `grid.NTG` | `NTG` | `main1.m` | 1-7 | no | Array sized `nx*ny*nz` |

Derived fields produced by `GridProp_pre.m`:

- `grid.coordinates`
- `grid.nodes`
- `grid.nP`
- `grid.nmc`
- `grid.dxv`
- `grid.dyv`
- `grid.dzv`
- `grid.zm`
- `grid.vm`
- `grid.xrao`
- `grid.yrao`
- `grid.zrao`
- `grid.cell_mid_coords`

## Fracture Input

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `fracture.input_content` | `input_content` | `main1.m` | 1-7 | yes | Engineering fracture table |
| `fracture.f` | `f` | `main1.m` / helper outputs | 1-7 | advanced | Vector fracture representation |
| `fracture.fellip` | `fellip` | `main1.m` / helper outputs | 1-7 | advanced | Elliptic fractures |
| `fracture.frac_information` | `frac_information` | helper outputs | 1-7 | no | Generated by helper functions |
| `fracture.nf` | `nf` | `main1.m` | 1-7 | no | Derived fracture count |

Current GUI/runtime simplification:

- `FractureInputStyle` has been removed from the editable config schema.
- Runtime always uses the engineering-table path that reads `fracture.input_content`.
- `fractureLines`, `fractureHeights`, and `flowBarrierFlags` have been removed from the editable schema.

## Discretization Selection

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `discretization.mode` | `grid_model` | `main1.m` | 1-7 | yes | Mirrors `model.grid_model` |
| `discretization.use_operator` | implicit | `main1.m` | 1-7 | no | `OperatorRS` is always called currently |

## SP Rock And Boundary Parameters

These are critical editable parameters and were previously undercounted.

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `discretization.sp.boundary_polygon` | `boundary` | `grid_discretization_SP_model.m` | 1 | yes | Irregular domain polygon |
| `discretization.sp.invalid_layer` | `invalid_layer` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Layer indices disabled from simulation |
| `discretization.sp.valid_grids` | `valid_grids` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | no | Derived from boundary/layers |
| `discretization.sp.matrix.kx` | `kx` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Array or generated field |
| `discretization.sp.matrix.ky` | `ky` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Array or generated field |
| `discretization.sp.matrix.kz` | `kz` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Array or generated field |
| `discretization.sp.matrix.pori` | `pori` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Array or generated field |
| `discretization.sp.matrix.prpor` | `prpor` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Matrix reference pressure |
| `discretization.sp.matrix.cpor` | `cpor` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Matrix compressibility |
| `discretization.sp.matrix.rock_density` | `rock_density` / `density_rock` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Naming is inconsistent across cases |
| `discretization.sp.fracture.Kf` | `Kf` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Fracture permeability |
| `discretization.sp.fracture.Wf` | `Wf` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Fracture aperture |
| `discretization.sp.fracture.Porf` | `Porf` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Fracture porosity |
| `discretization.sp.fracture.prporf` | `prporf` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Fracture reference pressure |
| `discretization.sp.fracture.cporf` | `cporf` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Fracture compressibility |
| `discretization.sp.stress.fracture_factor` | `stress_factor_fracture` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Stress sensitivity |
| `discretization.sp.stress.matrix_factor` | `stress_factor_matrix` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Stress sensitivity |
| `discretization.sp.stress.ref_pressure` | `stress_factor_ref_pressure` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Reference pressure |
| `discretization.sp.stress.Rpt` | `Rpt` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Unknown |
| `discretization.sp.stress.cf` | `cf` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Unknown |
| `discretization.sp.stress.ca` | `ca` | `grid_discretization_SP_model.m` | 1,2,4,5,6,7 | yes | Unknown |

Case-specific notes:

- Case 1 uses spatial functions and an irregular polygon boundary.
- Cases 2 and 4 use `invalid_layer` to deactivate the second layer when applicable.
- Cases 5 and 7 use different constant matrix properties than cases 2, 4, and 6.

## DP Rock Parameters

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `discretization.dp.fracture_layer.kx` | `kx` | `grid_discretization_DP_model.m` | 3 | yes | Dual-medium fracture layer |
| `discretization.dp.fracture_layer.ky` | `ky` | `grid_discretization_DP_model.m` | 3 | yes | Dual-medium fracture layer |
| `discretization.dp.fracture_layer.kz` | `kz` | `grid_discretization_DP_model.m` | 3 | yes | Dual-medium fracture layer |
| `discretization.dp.fracture_layer.pori` | `pori` | `grid_discretization_DP_model.m` | 3 | no | Dual-medium fracture layer porosity |
| `discretization.dp.matrix_layer.kx` | `kx_matrixLayer` | `grid_discretization_DP_model.m` | 3 | yes | Matrix layer permeability |
| `discretization.dp.matrix_layer.ky` | `ky_matrixLayer` | `grid_discretization_DP_model.m` | 3 | yes | Matrix layer permeability |
| `discretization.dp.matrix_layer.kz` | `kz_matrixLayer` | `grid_discretization_DP_model.m` | 3 | yes | Matrix layer permeability |
| `discretization.dp.matrix_layer.pori` | `pori_matrixLayer` | `grid_discretization_DP_model.m` | 3 | yes | Matrix layer porosity |
| `discretization.dp.shape_factor` | `sigma` | `grid_discretization_DP_model.m` | 3 | yes | Interporosity shape factor |
| `discretization.dp.valid_grids` | `valid_grids` | `grid_discretization_DP_model.m` | 3 | no | All ones in current example |
| `discretization.dp.NTG` | `NTG` | `grid_discretization_DP_model.m` | 3 | yes | Reassigned in file |
| `discretization.dp.prpor` | `prpor` | `grid_discretization_DP_model.m` | 3 | yes | Reference pressure |
| `discretization.dp.cpor` | `cpor` | `grid_discretization_DP_model.m` | 3 | yes | Compressibility |
| `discretization.dp.fracture.Kf` | `Kf` | `grid_discretization_DP_model.m` | 3 | yes | Fracture permeability |
| `discretization.dp.fracture.Wf` | `Wf` | `grid_discretization_DP_model.m` | 3 | yes | Fracture aperture |
| `discretization.dp.fracture.Porf` | `Porf` | `grid_discretization_DP_model.m` | 3 | yes | Fracture porosity |
| `discretization.dp.fracture.prporf` | `prporf` | `grid_discretization_DP_model.m` | 3 | yes | Fracture reference pressure |
| `discretization.dp.fracture.cporf` | `cporf` | `grid_discretization_DP_model.m` | 3 | yes | Fracture compressibility |
| `discretization.dp.stress.fracture_factor` | `stress_factor_fracture` | `grid_discretization_DP_model.m` | 3 | yes | Stress sensitivity |
| `discretization.dp.stress.matrix_factor` | `stress_factor_matrix` | `grid_discretization_DP_model.m` | 3 | yes | Stress sensitivity |
| `discretization.dp.stress.ref_pressure` | `stress_factor_ref_pressure` | `grid_discretization_DP_model.m` | 3 | yes | Reference pressure |
| `discretization.dp.rock_density` | `rock_density` | `grid_discretization_DP_model.m` | 3 | yes | Rock density |
| `discretization.dp.Rpt` | `Rpt` | `grid_discretization_DP_model.m` | 3 | yes | Unknown |
| `discretization.dp.cf` | `cf` | `grid_discretization_DP_model.m` | 3 | yes | Unknown |
| `discretization.dp.ca` | `ca` | `grid_discretization_DP_model.m` | 3 | yes | Unknown |

## Flow: Gas-Water

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `flow.gas_water.gas_prop.VL` | `gas_prop.VL` | `gas_water_flow.m` | 4 | yes | Langmuir volume |
| `flow.gas_water.gas_prop.PL` | `gas_prop.PL` | `gas_water_flow.m` | 4 | yes | Langmuir pressure |
| `flow.gas_water.gas_prop.Kn` | `gas_prop.Kn` | `gas_water_flow.m` | 4 | yes | Knudsen number |
| `flow.gas_water.gas_prop.Kn_modified_factor` | `gas_prop.Kn_modified_factor` | `gas_water_flow.m` | 4 | no | Derived |
| `flow.gas_water.gas_prop.beta_non_darcy_flow` | `gas_prop.beta_non_Darcy_flow` | `gas_water_flow.m` | 4 | yes | High-velocity term |
| `flow.gas_water.p_grad_threshold` | `p_grad_threshold` | `gas_water_flow.m` | 4 | yes | Threshold pressure gradient |
| `flow.gas_water.density_g_sc` | `density_g_sc` | `gas_water_flow.m` | 4 | yes | Gas density at standard conditions |
| `flow.gas_water.density_w_sc` | `density_w_sc` | `gas_water_flow.m` | 4 | yes | Water density at standard conditions |
| `flow.gas_water.gas_model` | `gas_model` | `gas_water_flow.m` | 4 | yes | 1 generated PVT, 2 tabulated PVT |
| `flow.gas_water.prg` | `prg` | `gas_water_flow.m` | 4 | yes | Only in model 1 |
| `flow.gas_water.Bgi` | `Bgi` | `gas_water_flow.m` | 4 | yes | Only in model 1 |
| `flow.gas_water.cg` | `cg` | `gas_water_flow.m` | 4 | yes | Only in model 1 |
| `flow.gas_water.vgi` | `vgi` | `gas_water_flow.m` | 4 | yes | Only in model 1 |
| `flow.gas_water.cvg` | `cvg` | `gas_water_flow.m` | 4 | yes | Only in model 1 |
| `flow.gas_water.Ppr` | `Ppr` | `gas_water_flow.m` | 4 | yes | Table or generated |
| `flow.gas_water.BG` | `BG` | `gas_water_flow.m` | 4 | yes | Table or generated |
| `flow.gas_water.MUG` | `MUG` | `gas_water_flow.m` | 4 | yes | Table or generated |
| `flow.gas_water.prw` | `prw` | `gas_water_flow.m` | 4 | yes | Water reference pressure |
| `flow.gas_water.Bwi` | `Bwi` | `gas_water_flow.m` | 4 | yes | Water volume factor |
| `flow.gas_water.cw` | `cw` | `gas_water_flow.m` | 4 | yes | Water compressibility |
| `flow.gas_water.vwi` | `vwi` | `gas_water_flow.m` | 4 | yes | Water viscosity |
| `flow.gas_water.cvw` | `cvw` | `gas_water_flow.m` | 4 | yes | Water viscosity-pressure coefficient |
| `flow.gas_water.ifpcgl` | `ifpcgl` | `gas_water_flow.m` | 4 | yes | Capillary pressure switch |
| `flow.gas_water.matrix_relperm_table` | `RPGW` | `gas_water_flow.m` | 4 | yes | Matrix table |
| `flow.gas_water.fracture_relperm_table` | `PRF` | `gas_water_flow.m` | 4 | yes | Fracture table |

## Flow: Oil-Water

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `flow.oil_water.density_o_sc` | `density_o_sc` | `oil_water_flow.m` | 5,6,7 | yes | Oil density |
| `flow.oil_water.density_w_sc` | `density_w_sc` | `oil_water_flow.m` | 5,6,7 | yes | Water density |
| `flow.oil_water.oil_model` | `oil_model` | `oil_water_flow.m` | 5,6,7 | yes | 1 generated PVT, 2 tabulated |
| `flow.oil_water.pro` | `pro` | `oil_water_flow.m` | 5,6,7 | yes | Oil ref pressure |
| `flow.oil_water.Boi` | `Boi` | `oil_water_flow.m` | 5,6,7 | yes | Oil volume factor |
| `flow.oil_water.co` | `co` | `oil_water_flow.m` | 5,6,7 | yes | Oil compressibility |
| `flow.oil_water.voi` | `voi` | `oil_water_flow.m` | 5,6,7 | yes | Oil viscosity |
| `flow.oil_water.cvo` | `cvo` | `oil_water_flow.m` | 5,6,7 | yes | Oil viscosity-pressure coefficient |
| `flow.oil_water.Ppr` | `Ppr` | `oil_water_flow.m` | 5,6,7 | yes | Table or generated |
| `flow.oil_water.BO` | `BO` | `oil_water_flow.m` | 5,6,7 | yes | Table or generated |
| `flow.oil_water.MUO` | `MUO` | `oil_water_flow.m` | 5,6,7 | yes | Table or generated |
| `flow.oil_water.prw` | `prw` | `oil_water_flow.m` | 5,6,7 | yes | Water ref pressure |
| `flow.oil_water.Bwi` | `Bwi` | `oil_water_flow.m` | 5,6,7 | yes | Water volume factor |
| `flow.oil_water.cw` | `cw` | `oil_water_flow.m` | 5,6,7 | yes | Water compressibility |
| `flow.oil_water.vwi` | `vwi` | `oil_water_flow.m` | 5,6,7 | yes | Water viscosity |
| `flow.oil_water.cvw` | `cvw` | `oil_water_flow.m` | 5,6,7 | yes | Water viscosity-pressure coefficient |
| `flow.oil_water.ifpcow` | `ifpcow` | `oil_water_flow.m` | 5,6,7 | yes | Capillary pressure switch |
| `flow.oil_water.matrix_relperm_table` | `PRM` | `oil_water_flow.m` | 5,6,7 | yes | Matrix table |
| `flow.oil_water.fracture_relperm_table` | `PRF` | `oil_water_flow.m` | 5,6,7 | yes | Fracture table |
| `flow.oil_water.beta_non_darcy_flow` | `beta_non_Darcy_flow` | `oil_water_flow.m` | 5,6,7 | yes | Non-Darcy coefficient |
| `flow.oil_water.p_grad_threshold` | `p_grad_threshold` | `oil_water_flow.m` | 5,6,7 | yes | Threshold gradient |

## Flow: Multi-Component

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `flow.multi_component.Ds` | `Ds` | `multi_component_flow.m` | 1,2,3 | yes | Surfactant diffusion |
| `flow.multi_component.Db` | `Db` | `multi_component_flow.m` | 1,2,3 | yes | Salt diffusion |
| `flow.multi_component.c_ca_table` | `c_ca_table` | `multi_component_flow.m` | 1,2,3 | yes | Adsorption table |
| `flow.multi_component.cs_data` | `cs_data` | `multi_component_flow.m` | 1,2,3 | no | Derived from table |
| `flow.multi_component.cb_data` | `cb_data` | `multi_component_flow.m` | 1,2,3 | no | Derived from table |
| `flow.multi_component.csa_data` | `csa_data` | `multi_component_flow.m` | 1,2,3 | no | Derived from table |
| `flow.multi_component.cba_data` | `cba_data` | `multi_component_flow.m` | 1,2,3 | no | Derived from table |
| `flow.multi_component.R` | `R` | `multi_component_flow.m` | 1,2,3 | yes | Chemistry constant |
| `flow.multi_component.Vm` | `Vm` | `multi_component_flow.m` | 1,2,3 | yes | Molar volume |
| `flow.multi_component.Temperature` | `Temperature` | `multi_component_flow.m` | 1,2,3 | yes | Temperature |
| `flow.multi_component.chemistry_cof` | `chemistry_cof` | `multi_component_flow.m` | 1,2,3 | no | Derived |
| `flow.multi_component.x_matrix!!!!` | `xm` | `multi_component_flow.m` | 1,2,3 | yes | Chemistry activity factor for matrix cells |
| `flow.multi_component.x_fracture!!!` | `xf` | `multi_component_flow.m` | 1,2,3 | yes | Chemistry activity factor for fracture cells |
| `flow.multi_component.cs_Nc` | `cs_Nc` | `multi_component_flow.m` | 1,2,3 | yes | Dynamic relative permeability mapping |
| `flow.multi_component.Nc_nosurf` | `Nc_nosurf` | `multi_component_flow.m` | 1,2,3 | no | Derived |
| `flow.multi_component.Nc_surf` | `Nc_surf` | `multi_component_flow.m` | 1,2,3 | no | Derived |
| `flow.multi_component.kr_nosurf` | `kr_nosurf` | `multi_component_flow.m` | 1,2,3 | yes | Relative permeability table |
| `flow.multi_component.kr_surf` | `kr_surf` | `multi_component_flow.m` | 1,2,3 | yes | Relative permeability table |
| `flow.multi_component.PC` | `PC` | `multi_component_flow.m` | 1,2,3 | yes | Capillary pressure table |
| `flow.multi_component.cs_Nc_fracture` | `cs_Nc_fracture` | `multi_component_flow.m` | 1,2,3 | yes | Fracture table |
| `flow.multi_component.kr_nosurf_fracture` | `kr_nosurf_fracture` | `multi_component_flow.m` | 1,2,3 | yes | Fracture table |
| `flow.multi_component.kr_surf_fracture` | `kr_surf_fracture` | `multi_component_flow.m` | 1,2,3 | yes | Fracture table |
| `flow.multi_component.PC_fracture` | `PC_fracture` | `multi_component_flow.m` | 1,2,3 | yes | Fracture capillary table |
| `flow.multi_component.ifpcgl` | `ifpcgl` | `multi_component_flow.m` | 1,2,3 | yes | Capillary pressure switch |
| `flow.multi_component.p_grad_threshold` | `p_grad_threshold` | `multi_component_flow.m` | 1,2,3 | yes | Threshold gradient |
| `flow.multi_component.gas_prop.VL` | `gas_prop.VL` | `multi_component_flow.m` | 1,2,3 | yes | Often zero for oil-like use |
| `flow.multi_component.gas_prop.PL` | `gas_prop.PL` | `multi_component_flow.m` | 1,2,3 | yes | Langmuir pressure |
| `flow.multi_component.gas_prop.Kn` | `gas_prop.Kn` | `multi_component_flow.m` | 1,2,3 | yes | Knudsen number |
| `flow.multi_component.gas_prop.Kn_modified_factor` | `gas_prop.Kn_modified_factor` | `multi_component_flow.m` | 1,2,3 | no | Derived |
| `flow.multi_component.gas_prop.stress_factor_fracture` | `gas_prop.stress_factor_fracture` | `multi_component_flow.m` | 1,2,3 | yes | Present in case-specific flow files |
| `flow.multi_component.gas_prop.stress_factor_matrix` | `gas_prop.stress_factor_matrix` | `multi_component_flow.m` | 1,2,3 | yes | Present in case-specific flow files |
| `flow.multi_component.gas_prop.stress_factor_ref_pressure` | `gas_prop.stress_factor_ref_pressure` | `multi_component_flow.m` | 1,2,3 | yes | Present in case-specific flow files |
| `flow.multi_component.gas_prop.beta_non_darcy_flow` | `gas_prop.beta_non_Darcy_flow` | `multi_component_flow.m` | 1,2,3 | yes | Non-Darcy coefficient |
| `flow.multi_component.density_g_sc` | `density_g_sc` | `multi_component_flow.m` | 1,2,3 | yes | Standard density |
| `flow.multi_component.gas_model` | `gas_model` | `multi_component_flow.m` | 1,2,3 | yes | 1 generated, 2 tabulated |
| `flow.multi_component.prg` | `prg` | `multi_component_flow.m` | 1,2,3 | yes | Ref pressure |
| `flow.multi_component.Bgi` | `Bgi` | `multi_component_flow.m` | 1,2,3 | yes | Volume factor |
| `flow.multi_component.cg` | `cg` | `multi_component_flow.m` | 1,2,3 | yes | Compressibility |
| `flow.multi_component.vgi` | `vgi` | `multi_component_flow.m` | 1,2,3 | yes | Viscosity |
| `flow.multi_component.cvg` | `cvg` | `multi_component_flow.m` | 1,2,3 | yes | Viscosity-pressure coefficient |
| `flow.multi_component.Ppr` | `Ppr` | `multi_component_flow.m` | 1,2,3 | yes | Table or generated |
| `flow.multi_component.BG` | `BG` | `multi_component_flow.m` | 1,2,3 | yes | Table or generated |
| `flow.multi_component.MUG` | `MUG` | `multi_component_flow.m` | 1,2,3 | yes | Table or generated |
| `flow.multi_component.density_w_sc` | `density_w_sc` | `multi_component_flow.m` | 1,2,3 | yes | Water density |
| `flow.multi_component.prw` | `prw` | `multi_component_flow.m` | 1,2,3 | yes | Water ref pressure |
| `flow.multi_component.Bwi` | `Bwi` | `multi_component_flow.m` | 1,2,3 | yes | Water volume factor |
| `flow.multi_component.cw` | `cw` | `multi_component_flow.m` | 1,2,3 | yes | Water compressibility |
| `flow.multi_component.vwi` | `vwi` | `multi_component_flow.m` | 1,2,3 | yes | Water viscosity |
| `flow.multi_component.cvw` | `cvw` | `multi_component_flow.m` | 1,2,3 | yes | Water viscosity-pressure coefficient |
| `flow.multi_component.number_state_variables` | `number_state_variables` | `multi_component_flow.m` | 1,2,3 | no | Fixed as 4 in current code |

## Initial Conditions

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `initial.pressure` | `P` | flow files | 1-7 | yes | Initial pressure array |
| `initial.sw` | `Sw` | flow files | 1-7 | yes | Initial water saturation array |
| `initial.cs` | `Cs` | `multi_component_flow.m` | 1,2,3 | yes | Initial surfactant concentration |
| `initial.cb` | `Cb` | `multi_component_flow.m` | 1,2,3 | yes | Initial salt concentration |

## Wells

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `wells.well1` | `well1` | `main1.m` | 1-7 | yes | Conventional wells table |
| `wells.num_fracture_wells` | `num_fracture_wells` | `main1.m` | 1-7 | yes | Count |
| `wells.welloc` | `welloc` | `main1.m` | 1-7 | yes | Fracture well coordinates |
| `wells.perfnum` | `perfnum` | helper output | 1-7 | no | Derived from `findWelloc` |
| `wells.well2` | `well2` | `main1.m` | 1-7 | yes | Fracture-well table |
| `wells.Wellc` | `Wellc` | helper output | 1-7 | no | Combined runtime structure |

Conventional well row shape:

- well name
- perforation count
- perforation grid index matrix
- well radius
- skin
- well type

Fracture-well row shape:

- well name
- perforation count
- perforation indices
- well radius
- skin
- well type

## Schedule

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `schedule.number_phases` | `number_phases` | `main1.m` | 1-7 | yes | Stage count |
| `schedule.well_schedules` | `well_schedules` | `main1.m` | 1-7 | yes | Per-stage control rows |
| `schedule.time` | `time` | `main1.m` | 1-7 | yes | Stage duration vector |
| `schedule.dtmax` | `dtmax` | `main1.m` | 1-7 | yes | Max timestep per stage |
| `schedule.dtmin` | `dtmin` | `main1.m` | 1-7 | yes | Min timestep per stage |

Schedule row fields observed:

- well name
- well state
- well role
- control mode
- target value 1
- target value 2
- optional `Cs_inj`
- optional `Cb_inj`

## Solver

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `solver.yitap` | `yitap` | `main1.m` | 1-7 | yes | Adaptive timestep control |
| `solver.yitas` | `yitas` | `main1.m` | 1-7 | yes | Adaptive timestep control |
| `solver.omega` | `omega` | `main1.m` | 1-7 | yes | Adaptive timestep control |
| `solver.Nmax` | `Nmax` | `main1.m` | 1-7 | yes | Max Newton iterations |
| `solver.epsave` | `epsave` | `main1.m` | 1-7 | yes | Average residual tolerance |
| `solver.epsmax` | `epsmax` | `main1.m` | 1-7 | yes | Max residual tolerance |

## Runtime / Output

| Config Path | Source Variable | Source File | Cases | Editable | Notes |
| --- | --- | --- | --- | --- | --- |
| `output.result_name` | none | future GUI | all | yes | Result label |
| `output.save_input_path` | none | future GUI | all | yes | Save location |
| `output.save_result_path` | none | future GUI | all | yes | Save location |
| `output.plot_requests` | none | future GUI | all | yes | Requested result plots |

Runtime-only outputs:

- `Times`
- `OutputRs`
- `Wellpara`
- `trun`

## Known Inconsistencies To Normalize

- `rock_density` and `density_rock` are both used in SP discretization files.
- Some fields are editable expressions in one case and constant arrays in another, especially `kx`, `ky`, `kz`, and `pori`.
- `boundary` exists in case 1 but not in the other SP examples.
- DP mode introduces extra fields absent from SP mode.

These inconsistencies are exactly why the GUI must be built on a normalized `config` instead of the raw scripts.