diff --git a/web/preset_flow.sh b/web/preset_flow.sh
new file mode 100755
index 0000000..7eade00
--- /dev/null
+++ b/web/preset_flow.sh
@@ -0,0 +1,11 @@
+#! /bin/bash
+Cluster=4
+for n in 8 25; do 
+   let nr_flows=\($Cluster-1\)*\($Cluster-2\)*$n
+   ./preset_flow.py $Cluster $n > flowdef_${Cluster}node_$nr_flows.txt
+done
+Cluster=8
+for n in 1 3 6 10 25; do 
+   let nr_flows=\($Cluster-1\)*\($Cluster-2\)*$n
+   ./preset_flow.py $Cluster $n > flowdef_${Cluster}node_$nr_flows.txt
+done