Adding the fluid material

Author: juancamarotti

co_simulation/validation/fsi_turek_FSI2/source/FluidMaterials.json

@@ -0,0 +1,16 @@
+{
+    "properties" : [{
+        "model_part_name" : "FluidModelPart.Parts_Fluid",
+        "properties_id"   : 1,
+        "Material"        : {
+            "constitutive_law" : {
+                "name" : "Newtonian2DLaw"
+            },
+            "Variables"        : {
+                "DENSITY": 1000.0,
+                "DYNAMIC_VISCOSITY" : 1.0
+            },
+            "Tables"           : {}
+        }
+    }]
+}

co_simulation/validation/fsi_turek_FSI2/source/fsi_turek_FSI2_Fluid.mdpa

@@ -3,8 +3,6 @@ Begin ModelPartData
 End ModelPartData
 
 Begin Properties 1
-	DENSITY	1000.0
-	DYNAMIC_VISCOSITY	1.0
 End Properties // 1
 
 Begin Properties 0