Remove dead link

jorgensd · jorgensd · commit 8b355cb347b6 · 2025-04-22T07:54:43.000+02:00
diff --git a/chapter2/ns_code2.ipynb b/chapter2/ns_code2.ipynb
@@ -9,7 +9,7 @@
     "\n",
     "Author: Jørgen S. Dokken\n",
     "\n",
-    "In this section, we will turn our attention to a slightly more challenging problem: flow past a cylinder. The geometry and parameters are taken from the [DFG 2D-3 benchmark](https://www.featflow.de/en/benchmarks/cfdbenchmarking/flow/dfg_benchmark3_re100.html) in FeatFlow.\n",
+    "In this section, we will turn our attention to a slightly more challenging problem: flow past a cylinder. The geometry and parameters are taken from the [DFG 2D-3 benchmark](https://wwwold.mathematik.tu-dortmund.de/~featflow/en/benchmarks/cfdbenchmarking/flow/dfg_benchmark3_re100.html) in FeatFlow.\n",
     "\n",
     "To be able to solve this problem efficiently and ensure numerical stability, we will substitute our first order backward difference scheme with a Crank-Nicholson discretization in time, and a semi-implicit Adams-Bashforth approximation of the non-linear term.\n",
     "\n",
diff --git a/chapter2/ns_code2.py b/chapter2/ns_code2.py
@@ -17,7 +17,7 @@
 #
 # Author: Jørgen S. Dokken
 #
-# In this section, we will turn our attention to a slightly more challenging problem: flow past a cylinder. The geometry and parameters are taken from the [DFG 2D-3 benchmark](https://www.featflow.de/en/benchmarks/cfdbenchmarking/flow/dfg_benchmark3_re100.html) in FeatFlow.
+# In this section, we will turn our attention to a slightly more challenging problem: flow past a cylinder. The geometry and parameters are taken from the [DFG 2D-3 benchmark](https://wwwold.mathematik.tu-dortmund.de/~featflow/en/benchmarks/cfdbenchmarking/flow/dfg_benchmark3_re100.html) in FeatFlow.
 #
 # To be able to solve this problem efficiently and ensure numerical stability, we will substitute our first order backward difference scheme with a Crank-Nicholson discretization in time, and a semi-implicit Adams-Bashforth approximation of the non-linear term.
 #

Original file line number	Diff line number	Diff line change
`@@ -17,7 +17,7 @@`
`17`	`17`	`#`
`18`	`18`	`# Author: Jørgen S. Dokken`
`19`	`19`	`#`
`20`		`-# In this section, we will turn our attention to a slightly more challenging problem: flow past a cylinder. The geometry and parameters are taken from the [DFG 2D-3 benchmark](https://www.featflow.de/en/benchmarks/cfdbenchmarking/flow/dfg_benchmark3_re100.html) in FeatFlow.`
	`20`	`+# In this section, we will turn our attention to a slightly more challenging problem: flow past a cylinder. The geometry and parameters are taken from the [DFG 2D-3 benchmark](https://wwwold.mathematik.tu-dortmund.de/~featflow/en/benchmarks/cfdbenchmarking/flow/dfg_benchmark3_re100.html) in FeatFlow.`
`21`	`21`	`#`
`22`	`22`	`# To be able to solve this problem efficiently and ensure numerical stability, we will substitute our first order backward difference scheme with a Crank-Nicholson discretization in time, and a semi-implicit Adams-Bashforth approximation of the non-linear term.`
`23`	`23`	`#`