From 443ddf4ddd73bf5c1eb5325418ae6e66f30f8afa Mon Sep 17 00:00:00 2001
From: Gerasimos Chourdakis <gerasimos.chourdakis@ipvs.uni-stuttgart.de>
Date: Fri, 28 Mar 2025 10:41:42 +0100
Subject: [PATCH] Revert #634

---
 changelog-entries/634.md              | 1 -
 elastic-tube-1d/precice-config.xml    | 1 -
 perpendicular-flap/precice-config.xml | 1 -
 3 files changed, 3 deletions(-)
 delete mode 100644 changelog-entries/634.md

diff --git a/changelog-entries/634.md b/changelog-entries/634.md
deleted file mode 100644
index 2d344b44d..000000000
--- a/changelog-entries/634.md
+++ /dev/null
@@ -1 +0,0 @@
-- Changed the IQN settings in the elastic-tube-1d and perpendicular flap tutorials to enforce recomputation of the preconditioner [#634](https://github.com/precice/tutorials/pull/634)
diff --git a/elastic-tube-1d/precice-config.xml b/elastic-tube-1d/precice-config.xml
index 631f016dd..d99f72cbd 100644
--- a/elastic-tube-1d/precice-config.xml
+++ b/elastic-tube-1d/precice-config.xml
@@ -63,7 +63,6 @@
     <acceleration:IQN-ILS>
       <data name="CrossSectionLength" mesh="Solid-Nodes-Mesh" />
       <initial-relaxation value="0.01" />
-      <preconditioner type="residual-sum" update-on-threshold="false" />
       <max-used-iterations value="50" />
       <time-windows-reused value="8" />
       <filter type="QR2" limit="1e-3" />
diff --git a/perpendicular-flap/precice-config.xml b/perpendicular-flap/precice-config.xml
index 5899b0133..c1b23b774 100644
--- a/perpendicular-flap/precice-config.xml
+++ b/perpendicular-flap/precice-config.xml
@@ -56,7 +56,6 @@
     <acceleration:IQN-ILS>
       <data name="Displacement" mesh="Solid-Mesh" />
       <data name="Force" mesh="Solid-Mesh" />
-      <preconditioner type="residual-sum" update-on-threshold="false" />
       <filter type="QR2" limit="1e-2" />
       <initial-relaxation value="0.5" />
       <max-used-iterations value="100" />