Add wale keywords (!82)

docs/source_docs/refs.bib

@@ -180,6 +180,16 @@ pages = {379-402}
   pages = {12304}
 }
 
+@article{ducros98,
+  title={Wall-adapting local eddy-viscosity models for simulations in complex geometries},
+  author={Ducros, F and Nicoud, F and Poinsot, Thierry},
+  journal={Numerical Methods for Fluid Dynamics VI},
+  volume={6},
+  pages={293--299},
+  year={1998},
+  publisher={Oxford University Computing Laboratory Oxford, UK}
+}
+
 @article{elhilo12,
 author = {M. El-Hilo and R.W. Chantrell},
 title = {Rationalisation of distribution functions for models of nanoparticle magnetism},

docs/source_docs/user_guide/inputs/fluid_model.rst

@@ -29,6 +29,7 @@ The following inputs are defined using the ``fluid`` prefix.
 |                                            |                                                            |        |          |
 |                                            | * ``None`` No eddy viscosity model                         |        |          |
 |                                            | * ``Smagorinsky-Lilly`` :cite:p:`Smag63,Lilly66`           |        |          |
+|                                            | * ``WALE`` :cite:p:`ducros98`                              |        |          |
 |                                            |                                                            |        |          |
 +--------------------------------------------+------------------------------------------------------------+--------+----------+
 | viscosity.eddy.Smagorinsky-Lilly.constant  | Smagorinsky-Lilly constant which usually has values        | Real   | None     |
@@ -37,6 +38,8 @@ The following inputs are defined using the ``fluid`` prefix.
 |                                            | A value is required when using the ``Samgorinsky-Lilly``   |        |          |
 |                                            | eddy viscosity model.                                      |        |          |
 +--------------------------------------------+------------------------------------------------------------+--------+----------+
+| viscosity.eddy.WALE.constant               | WALE eddy viscosity model constant.                        | Real   | 0.325    |
++--------------------------------------------+------------------------------------------------------------+--------+----------+
 | species                                    | Specify the species that constitute the fluid.             | String |  None    |
 |                                            |                                                            |        |          |
 |                                            | All listed species must be properly defined. See the       |        |          |