# Module: TDGL

:Name: mod_mupro_tdgl
:Depends on: [mod_mupro_base](base.md), [mod_mupro_fft](fft.md), [mod_mupro_log](log.md)
:Defined variables: None
:Defined types: [type_mupro_TDGLContext](#type_mupro_TDGLContext)

<!-- :Defined subroutines: - [mupro_TDGL_setup](#mupro_TDGL_setup) - [mupro_TDGL_solve](#mupro_TDGL_solve) -->

## Defined Types

### type_mupro_TDGLContext

#### Variables

|      Variable       |      Type      |    Dimension    | Meaning                                            |
| :-----------------: | :------------: | :-------------: | -------------------------------------------------- |
|          g          |     real64     |      (6,6)      | Gradient coefficient                               |
| kinetic_coefficient |     real64     |        -        | Kinetic coefficient                                |
|         dt          |     real64     |        -        | time for each timestep                             |
|   flag_anisotropy   |    logical     |        -        | Whether consider anisotropic gradient coefficient  |
|         rhs         | real64,pointer | (3,Rn3,Rn2,Rn1) | Driving forces along x, y, and z                   |
|         op          | real64,pointer | (3,Rn3,Rn2,Rn1) | Updated order parameter (vector) along x, y, and z |

#### Procedures Defined Subroutines

##### setup

Preparation for the TDGL solver.

> call tdglContext%setup()

##### solve

Evolve the Time-Dependent Ginzburg Landau equation semi-implicitly, march forward the order parameter distribution for one time step. Update the op value in context given rhs.

> call tdglContext%solve()