Merge pull request #116 from su2code/feature_nemo_phys_models

Adding detail on NEMO physical models

Author: jtneedels

_data/docs_v7.yml

@@ -30,6 +30,7 @@
   docs_v7:
   - Theory
   - Streamwise-Periodicity
+  - Thermochemical-Nonequilibrium
 
 - title: Users Guide
   docs_v7:

_docs_v7/Physical-Definition.md

@@ -19,6 +19,7 @@ SU2 offers different ways of setting and computing this definition. This documen
 - [Free-Stream Definition (Thermochemical Nonequilibrium)](#free-stream-definition-thermochemical-nonequilibrium)
   - [Free-Stream Temperatures](#free-stream-temperatures)
   - [Chemical Composition and Mass Fractions](#chemical-composition-and-mass-fractions)
+- [Transport Coefficient Model (Thermochemical Nonequilibrium)](#transport-coefficient-model-thermochemical-nonequilibrium)
 - [Flow Condition (Incompressible)](#flow-condition-incompressible)
   - [Thermodynamic and Gauge Pressure](#thermodynamic-and-gauge-pressure)
   - [Initial State and Non-Dimensionalization](#initial-state-and-non-dimensionalization)
@@ -128,6 +129,18 @@ A chemistry model, consisting of a set of flow species, thermochemical propertie
 
 Free-stream mass fractions must also be specified in list using the option `GAS_COMPOSITION`. The mass fractions are specified as decimal values in the order of the species in the gas model. For example, an AIR-5 mixture of 77% oxygen and 23% nitrogen would be expressed as (0.77, 0.23, 0.00, 0.00, 0.00).
 
+## Transport Coefficient Model (Thermochemical Nonequilibrium) ##
+
+| Solver | Version |
+| --- | --- |
+| `NEMO_NAVIER_STOKES` | 7.0.0 |
+
+A transport coefficient model must be specified for viscous simulations with the NEMO solver, using the `TRANSPORT_COEFF_MODEL` config option. Available options when using the SU2TCLib thermochemical library are the Wilkes-Blottner-Eucken, Gupta-Yos, and Sutherland viscosity models, specified by `WILKE`, `GUPTA-YOS`, and `SUTHERLAND`, respectively. The default option for transport coefficient model is Wilkes-Blottner-Eucken. 
+
+It should be noted the Sutherland model is only used to evaluate viscosity, and the Wilkes-Blottner-Eucken model is used to evaluate diffusion coefficient and thermal conductivity.
+
+---
+
 ## Flow Condition (Incompressible) ##
 
 | Solver | Version |