Revert "replace code with other code"

This reverts commit 7fd42710.

Doesn't works since I am using a different OpenFoam.

openfoam/run/flowAroundCylinder/0/U

@@ -26,23 +26,11 @@ boundaryField
         value           uniform (0 0 0);
     }
 
-    inlet
-    /* {  */
-    /*     type            codedFixedValue;  */
-    /*     value           uniform (0.2 0 0);  */
-    /*     name            parabolicChannelInlet;  */
-    /* }  */
     inlet
     {
-        type            uniformFixedValue;
-        uniformValue    (0.2 0 0);
-        y0              0.2;
-        scale2          polynomial
-        (
-            ( (#eval{6*$y0*(0.41-$y0)/pow(0.41,2)}  0 0) (0 0 0) )
-            ( (#eval{6*(0.41-2*$y0)/pow(0.41,2)}    0 0) (1 0 0) )
-            ( (#eval{-6/pow(0.41,2)}                0 0) (2 0 0) )
-        );
+        type            codedFixedValue;
+        value           uniform (0.2 0 0);
+        name            parabolicChannelInlet;
     }
 
     outlet

openfoam/run/flowAroundCylinder/system/codeDict

+/*--------------------------------*- C++ -*----------------------------------*\
+| =========                 |                                                 |
+| \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox           |
+|  \\    /   O peration     | Version:  5.0                                   |
+|   \\  /    A nd           | Web:      www.OpenFOAM.org                      |
+|    \\/     M anipulation  |                                                 |
+\*---------------------------------------------------------------------------*/
+FoamFile
+{
+    version     2.0;
+    format      ascii;
+    class       dictionary;
+    location    "system";
+    object      codeDict;
+}
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+// Note that you must adjust y0 with respect to the origin of
+// you coordinate system.
+
+#include ../scale
+
+parabolicChannelInlet
+{
+    code
+    #{
+        auto y0 = -0.2;      // Reference coodinate, lower wall
+        // auto vmean = 0.2;   // Mean velocity with Re_d = 20
+        // auto vmean = 1;   // Mean velocity with Re_d = 100
+	    auto vmean = $ubar;
+
+        Foam::Field<double> y = patch().Cf().component(vector::Y) - y0;
+        operator ==
+        (
+            vmean*((6.0*y*(0.41-y))/pow(0.41,2))*vector(1,0,0)
+        );
+    #};
+}