diff --git a/_docs/Advanced-AD-Techniques.md b/_docs/Advanced-AD-Techniques.md index f0aabd4a..3b9c6e61 100644 --- a/_docs/Advanced-AD-Techniques.md +++ b/_docs/Advanced-AD-Techniques.md @@ -25,7 +25,7 @@ we can build an internal representation of each expression to directly compute a The picture below shows the computational graph for the expression `φ=cos(v1)v2` and the compile-time representation as object with `su2double` being the general datatype used throughout SU2.  -This object can be traversed to compute and store the partial derivatives `∂φ/∂v1=cos(v1)` and `∂φ/∂v2=-sin(v1)v2` based on the derivatives of each involved unary or binary operation. If recording is enabled the traversal of the computational graph of each +This object can be traversed to compute and store the partial derivatives `∂φ/∂v1=-sin(v1)v2` and `∂φ/∂v2=cos(v1)` based on the derivatives of each involved unary or binary operation. If recording is enabled the traversal of the computational graph of each expression is started as soon as it occurs on the right-hand side in a statement. Note that the partial derivatives are only stored if the corresponding argument has some dependency on the input variables set by the user. This kind of dependency or activity tracking is relatively easy to accomplish since every variable stores an index along with its value. A zero index represents passive variables while a non-zero index identifies active variables. This index will be @@ -35,7 +35,7 @@ as an argument. ### AD Tool Wrapper The CoDi library provides a special datatype and is automatically included -during the compilation if AD support is requested by the user (see [[AD Build]]) . For developers of SU2 there is no need to deal +during the compilation if AD support is requested by the user (see the build instructions for further information). For developers of SU2 there is no need to deal with this library explicitly which is why there are simple wrapper routines for the most important features available. These are for example the following: diff --git a/_docs_v7/Theory.md b/_docs_v7/Theory.md index 72b01dd9..e394ddad 100644 --- a/_docs_v7/Theory.md +++ b/_docs_v7/Theory.md @@ -3,7 +3,7 @@ title: Governing Equations in SU2 permalink: /docs_v7/Theory/ --- -This page contains a very brief summary of the different governing equation sets that are treated in each of the solvers within SU2. The reader will be referred to other references for the full detail of the numerical implementations, but we will also describe the approaches at a high level here. +This page contains a very brief summary of the different governing equation sets that are treated in each of the solvers within SU2. The reader will be referred to other references in some instances for the full detail of the numerical implementations, but the approaches are also described at a high level here. --- @@ -94,7 +94,9 @@ Within the `EULER` solvers, we discretize the equations in space using a finite | `INC_NAVIER_STOKES`, `INC_RANS` | 7.0.0 | -SU2 solves the incompressible Navier-Stokes equations in a general form allowing for variable density due to heat transfer through the low-Mach approximation (or incompressible ideal gas formulation). The equations can be expressed in differential form as +SU2 solves the incompressible Navier-Stokes equations in a general form allowing for variable density due to heat transfer through the low-Mach approximation (or incompressible ideal gas formulation). +The reader is referred to [this paper](https://arc.aiaa.org/doi/10.2514/1.J058222) for extended details on the incompressible Navier-Stokes and Euler solvers in SU2. +The equations can be expressed in differential form as $$ \mathcal{R}(V) = \frac{\partial V}{\partial t} + \nabla \cdot \bar{F}^{c}(V) - \nabla \cdot \bar{F}^{v}(V,\nabla V) - S = 0 $$ @@ -164,6 +166,8 @@ Within the `INC_EULER` solver, we discretize the equations in space using a fini # Turbulence Modeling # +Available for `RANS`, `INC_RANS`. + SU2 implements several variants of the SST and SA turbulence models, for specifics of the models please see the [NASA Turbulence Modeling Resource](https://turbmodels.larc.nasa.gov/index.html) (TMR). For information on how to use turbulence models in SU2 see the [users guide](https://su2code.github.io/docs_v7/Physical-Definition/). @@ -173,7 +177,7 @@ The edge-based finite volume discretization of flow solvers is also used in turb # Species Transport # -Compatible with `NAVIER_STOKES`, `RANS`, `INC_NAVIER_STOKES`, `INC_RANS` +Compatible with `NAVIER_STOKES`, `RANS`, `INC_NAVIER_STOKES`, `INC_RANS`. $$ \mathcal{R}(U) = \frac{\partial U}{\partial t} + \nabla \cdot \bar{F}^{c}(U) - \nabla \cdot \bar{F}^{v}(U,\nabla U) - S = 0 $$ diff --git a/index.html b/index.html index 5d36a857..eb80f906 100644 --- a/index.html +++ b/index.html @@ -34,6 +34,19 @@