abstract and small fixes

tex/header/preamble.tex

@@ -19,7 +19,7 @@
 
 \usepackage{listings}
 \lstMakeShortInline[columns=fixed]|
-\usepackage[subsection]{placeins}  % makes sure that the figures stay within their section
+\usepackage[section]{placeins}  % makes sure that the figures stay within their section
 
 \setmainfont{Latin Modern Roman}
 \setsansfont{Latin Modern Sans}

tex/main.tex

@@ -5,6 +5,10 @@
 \author{Felix Hilsky}
 \maketitle
 % use \textinput as described in /header and _TEMPLATE
+\begin{abstract}
+  In this report the laminar flow between two parallel walls hindered by a cylindar is studied numerically with OpenFoam.
+  The results are compared with values from literature.
+\end{abstract}
 \textinput{mesh}
 \textinput{reynold}
 \section{Results}