From e590ffe9fa29d4e9123aa9aaefcbaae3f893616d Mon Sep 17 00:00:00 2001
From: Adrian Kummerlaender
Date: Sat, 2 Mar 2019 12:36:17 +0100
Subject: Add streaming figure

---
 content.tex                 |  6 ++++++
 img/collide_and_stream.tikz | 51 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 57 insertions(+)
 create mode 100644 img/collide_and_stream.tikz

diff --git a/content.tex b/content.tex
index 6c450a4..1ac1a3c 100644
--- a/content.tex
+++ b/content.tex
@@ -170,6 +170,12 @@ Strömen der neuen Verteilungen auf die benachbarten Zellen entsprechend der jew
 
 Bemerkenswert ist hierbei, dass der Kollisionsschritt nur lokale Informationen der jeweiligen Zelle benötigt und sich somit sehr gut zur parallelen Verarbeitung eignet.
 
+\begin{figure}[h]
+\centering
+\input{img/collide_and_stream.tikz}
+\caption{Strömung der im Kollisionsschritt relaxierten Verteilungen}
+\end{figure}
+
 \subsubsection{Chapman-Enskog Analyse}
 
 Ziel der beschriebenen Lattice Boltzmann Methode ist die möglichst gute Approximation der schwach-kompressiblen Navier-Stokes Gleichungen auf der Simulationsdomäne.
diff --git a/img/collide_and_stream.tikz b/img/collide_and_stream.tikz
new file mode 100644
index 0000000..232800f
--- /dev/null
+++ b/img/collide_and_stream.tikz
@@ -0,0 +1,51 @@
+\begin{tikzpicture}[
+	scale=1.5,
+	dot/.style={circle,draw=black,inner sep=3pt},
+	center/.style={circle,fill=black,inner sep=4pt},
+	arrow/.style={draw=black,->,>=stealth},
+]
+
+\foreach \x in {0,...,2}
+	\foreach \y in {0,...,2}
+		\ifthenelse{\x=1 \AND \y=1}{
+			\node[center] at (\x,\y){ };
+		}{
+			\node[dot] at (\x,\y){ };
+		};
+
+\foreach \x in {6,...,8}
+	\foreach \y in {0,...,2}
+		\ifthenelse{\x=7 \AND \y=1}{
+			\node[center] at (\x,\y){ };
+		}{
+			\node[dot] at (\x,\y){ };
+		};
+
+\foreach \x in {1}
+	\foreach \y in {1} {
+		\draw[arrow] (\x+0.2,\y+0.2) -- (\x+0.4,\y+0.4){ };
+		\draw[arrow] (\x+0.2,\y) -- (\x+0.35,\y){ };
+		\draw[arrow] (\x+0.2,\y-0.2) -- (\x+0.4,\y-0.4){ };
+		\draw[arrow] (\x,\y-0.2) -- (\x,\y-0.375){ };
+		\draw[arrow] (\x-0.2,\y-0.2) -- (\x-0.4,\y-0.4){ };
+		\draw[arrow] (\x-0.2,\y) -- (\x-0.5,\y){ };
+		\draw[arrow] (\x-0.2,\y+0.2) -- (\x-0.5,\y+0.5){ };
+		\draw[arrow] (\x,\y+0.2) -- (\x,\y+0.4){ };
+	};
+
+\foreach \x in {7}
+	\foreach \y in {1} {
+		\draw[arrow] (\x+1.2,\y+1.2) -- (\x+1.4,\y+1.4){ };
+		\draw[arrow] (\x+1.2,\y) -- (\x+1.35,\y){ };
+		\draw[arrow] (\x+1.2,\y-1.2) -- (\x+1.4,\y-1.4){ };
+		\draw[arrow] (\x,\y-1.2) -- (\x,\y-1.375){ };
+		\draw[arrow] (\x-1.2,\y-1.2) -- (\x-1.4,\y-1.4){ };
+		\draw[arrow] (\x-1.2,\y) -- (\x-1.5,\y){ };
+		\draw[arrow] (\x-1.2,\y+1.2) -- (\x-1.5,\y+1.5){ };
+		\draw[arrow] (\x,\y+1.2) -- (\x,\y+1.4){ };
+	};
+
+\draw[->,line width=0.5mm] (2.6,1) -- (5,1) node[midway,above] {Strömungsschritt};
+\draw (2.6,1) -- (5,1) node[midway,below] {\(t \mapsto t+1\)};
+
+\end{tikzpicture}
-- 
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