diff --git a/Solver/TESTCASES/box.geo b/Solver/TESTCASES/box.geo
index 8dd3a88c9b11c06f6fc73674316514e0c617eeff..0d763d0970e853dbf1e3fe31e3b0e0688791fd36 100644
--- a/Solver/TESTCASES/box.geo
+++ b/Solver/TESTCASES/box.geo
@@ -1,25 +1,28 @@
-lc = 1./2.5;
-Point(1) = { 0.0 ,0.0 ,0., lc};
-Point(2) = { 1.0 ,0.0 ,0., lc};
-Point(3) = { 1.0 ,1.0 ,0., lc};
-Point(4) = { 0.0 ,1.0 ,0., lc};
+C = 0.6;
+Lup = 0.6;
+L = 2.;
+lc = .1;
 
-// Point(1) = { 0., 0.0 ,0.0 ,lc};
-// Point(2) = { 0., 1.0 ,0.0 , lc};
-// Point(3) = { 0., 1.0 ,1.0 , lc};
-// Point(4) = { 0., 0.0 ,1.0 , lc};
+Point(1) = {0.0, 0.0, -Lup, lc};
+Point(2) = {C  , 0.0, -Lup, lc};
+Point(3) = {C  , C  , -Lup, lc};
+Point(4) = {0.0, C  , -Lup, lc};
 
 Line(1) = {1,2};
 Line(2) = {2,3};
 Line(3) = {3,4};
 Line(4) = {4,1};
 
+
 Line Loop(4) = {1,2,3,4};
 Plane Surface(5) = {4};
 
-Extrude {0, 0, 1} {
+Extrude {0,0,L} {
   Surface{5};
 }
 
-Physical Surface("boundary") = {27, 22, 18, 14, 5, 26};
+Physical Surface("inlet") = {5};
+Physical Surface("outlet") = {27};
+Physical Surface("wall") = {14,22};
+Physical Surface("symmetry") = {26,18};
 Physical Volume("volume") = {1};