examples/step-69: Link in repository for higher-order code

diff --git a/examples/step-69/doc/intro.dox b/examples/step-69/doc/intro.dox
index 1fa6873e3a7a1a18eb69a7a8564200e03b872ad2..4cd6c2fb9f04c368da9f291e92a84db5a5d27d1f 100644 (file)
--- a/examples/step-69/doc/intro.dox
+++ b/examples/step-69/doc/intro.dox
@@ -17,9 +17,11 @@ maximum wavespeed method</i> based on a first-order <i>graph viscosity</i>
 for solving Euler's equations of gas dynamics @cite GuermondPopov2016. As
 such it is presented primarily for educational purposes. For actual
 research computations you might want to consider exploring a corresponding
-high-performance implementation of a second-order accurate scheme that uses
-<i>convex limiting</i> techniques, and strong stability-preserving (SSP)
-time integration, see @cite GuermondEtAl2018.
+<a href="https://github.com/conservation-laws/ryujin">high-performance
+implementation of a second-order accurate scheme</a> that uses <i>convex
+limiting</i> techniques, and strong stability-preserving (SSP) time
+integration, see @cite GuermondEtAl2018
+(<a href="https://conservation-laws.43-1.org/">website</a>).
 
 @dealiiTutorialDOI{10.5281/zenodo.3698223,https://zenodo.org/badge/DOI/10.5281/zenodo.3698223.svg}
 

diff --git a/examples/step-69/doc/results.dox b/examples/step-69/doc/results.dox
index 995b4f290a31beb3dd0f24778f1cf2ae131b1aa2..e7c81aaabea1e1d90126d986810d7e5f39ff16e4 100644 (file)
--- a/examples/step-69/doc/results.dox
+++ b/examples/step-69/doc/results.dox
@@ -99,7 +99,8 @@ freedom in 2D. An animated schlieren plot of the solution looks as follows:
 It is evident that 37k gridpoints for the first-order method is nowhere
 near the resolution needed to resolve any flow features. For comparison,
 here is a "reference" computation with a second-order method and about 9.5M
-gridpoints:
+gridpoints (<a href="https://github.com/conservation-laws/ryujin">github
+project page</a>):
 
 <img src="https://www.dealii.org/images/steps/developer/step-69.2nd-order.t400.jpg" alt="" height="300">
 
@@ -162,11 +163,12 @@ discussed above. The pictures above illustrate how much diffusion that
 introduces and how far the solution is from one that actually resolves
 the features we care about.
 
-This can be fixed, but it would exceed what a *tutorial* is
-about. Nevertheless, it is worth showing what one can achieve by
-adding a second-order scheme. For example, here is a video that shows
-(with a different color scheme) a 2d simulation that corresponds to
-the cases shown above:
+This can be fixed, but it would exceed what a *tutorial* is about.
+Nevertheless, it is worth showing what one can achieve by adding a
+second-order scheme. For example, here is a video computed with <a
+href=https://conservation-laws.43-1.org/>the following research code</a>
+that shows (with a different color scheme) a 2d simulation that corresponds
+to the cases shown above:
 
 @htmlonly
 <p align="center">