Extrusion v3 (#1349)

Co-authored-by: Dimitrios Adam <dimitriosadam@Dimitrioss-MacBook-Air.local>
Co-authored-by: Spencer Bryngelson <sbryngelson@gmail.com>

Author: 3 people

.gitignore

@@ -54,6 +54,7 @@ docs/simulation/readme.md
 docs/post_process/readme.md
 docs/api/readme.md
 
+examples/**/IC/*.dat
 examples/*batch/*/
 examples/**/D/*
 examples/**/p*

docs/documentation/case.md

@@ -272,8 +272,8 @@ The code provides three pre-built patches for dimensional extrusion of initial c
 - `case(270)`: Extrude 1D data to 2D domain
 - `case(370)`: Extrude 2D data to 3D domain
 
-Setup: Only requires specifying `init_dir` and filename pattern via `zeros_default`. Grid dimensions are automatically detected from the data files.
-Implementation: All variables and file handling are managed in `src/common/include/ExtrusionHardcodedIC.fpp` with no manual grid configuration needed.
+Setup: Only requires specifying `files_dir` and filename pattern via `file_extension`. The files are located, for example, at `examples/1D_flamelet/IC`, and their format is `prim.XX.YY.file_extension.dat`.
+Implementation: All variables and file handling are managed in the `case.py` file of the simulation.
 Usage: Ideal for initializing simulations from lower-dimensional solutions, enabling users to add perturbations or modifications to the base extruded fields for flow instability studies.
 
 #### Parameter Descriptions