From 773b21c62ddd422717837c5d70924098b45dd3c4 Mon Sep 17 00:00:00 2001 From: Jean-Paul Pelteret Date: Thu, 20 May 2021 22:01:33 +0200 Subject: [PATCH] Add three changelog entries for new tutorials. --- doc/news/changes/major/20210504Bangerth | 6 ++++++ doc/news/changes/major/20210506Jean-PaulPelteret | 4 ++++ doc/news/changes/major/20210506Jean-PaulPelteret-2 | 6 ++++++ 3 files changed, 16 insertions(+) create mode 100644 doc/news/changes/major/20210504Bangerth create mode 100644 doc/news/changes/major/20210506Jean-PaulPelteret create mode 100644 doc/news/changes/major/20210506Jean-PaulPelteret-2 diff --git a/doc/news/changes/major/20210504Bangerth b/doc/news/changes/major/20210504Bangerth new file mode 100644 index 0000000000..4af888c3ca --- /dev/null +++ b/doc/news/changes/major/20210504Bangerth @@ -0,0 +1,6 @@ +New: The step-77 tutorial explores one of the mentioned extensions to step-15, +namely implementing a proper step length control algorithm. It uses the KINSOL +nonlinear solver package from the SUNDIALS library to incorporate a line +search method into the incremental update for Newton's method. +
+(Wolfgang Bangerth, 2021/05/04) diff --git a/doc/news/changes/major/20210506Jean-PaulPelteret b/doc/news/changes/major/20210506Jean-PaulPelteret new file mode 100644 index 0000000000..a77d2cc69e --- /dev/null +++ b/doc/news/changes/major/20210506Jean-PaulPelteret @@ -0,0 +1,4 @@ +New: The step-71 tutorial demonstrates how automatic and symbolic differentiation +can be leveraged to compute the derivatives of a coupled constitutive law. +
+(Jean-Paul Pelteret, 2021/05/06) diff --git a/doc/news/changes/major/20210506Jean-PaulPelteret-2 b/doc/news/changes/major/20210506Jean-PaulPelteret-2 new file mode 100644 index 0000000000..241140f3e4 --- /dev/null +++ b/doc/news/changes/major/20210506Jean-PaulPelteret-2 @@ -0,0 +1,6 @@ +New: The step-72 tutorial revisits step-15 (that solves a nonlinear elliptic +problem using Newton's method). In this variant, automatic differentiation +is used either to linearize the residual, or to compute the full linear system +from an energy functional. +
+(Jean-Paul Pelteret, 2021/05/06) -- 2.39.5