Export velocity in node or in cell center

jpina · November 6, 2015, 13:20

Hello!

I am exporting the velocity in the inlet and surprisingly, when I select Location: Node here:

I obtain:

nodenumber x-coordinate y-coordinate velocity-magnitude
1.000000E+00 -1.000000E-06 2.999711E-03 1.394836E-05
2.000000E+00 -1.000000E-06 2.999839E-03 7.749091E-06
3.000000E+00 -1.000000E-06 2.999968E-03 1.549818E-06

When I select Location: Cell Center, I get the following values:

cellnumber x-coordinate y-coordinate velocity-magnitude x-velocity
1 -1.000000E-06 2.999705E-03 1.408548E-05
2 -1.000000E-06 2.999716E-03 1.364665E-05
3 -1.000000E-06 2.999727E-03 1.314436E-05
4 -1.000000E-06 2.999737E-03 1.263530E-05
5 -1.000000E-06 2.999748E-03 1.211906E-05
6 -1.000000E-06 2.999759E-03 1.160301E-05
7 -1.000000E-06 2.999770E-03 1.108668E-05
8 -1.000000E-06 2.999780E-03 1.057400E-05
9 -1.000000E-06 2.999791E-03 1.003785E-05
10 -1.000000E-06 2.999802E-03 9.534894E-06
11 -1.000000E-06 2.999813E-03 9.015264E-06
12 -1.000000E-06 2.999823E-03 8.497882E-06
13 -1.000000E-06 2.999834E-03 7.980660E-06
14 -1.000000E-06 2.999845E-03 7.464186E-06
15 -1.000000E-06 2.999855E-03 6.947777E-06
16 -1.000000E-06 2.999866E-03 6.431521E-06
17 -1.000000E-06 2.999877E-03 5.915332E-06
18 -1.000000E-06 2.999888E-03 5.399133E-06
19 -1.000000E-06 2.999898E-03 4.882863E-06
20 -1.000000E-06 2.999909E-03 4.366684E-06
21 -1.000000E-06 2.999920E-03 3.850696E-06
22 -1.000000E-06 2.999930E-03 3.335010E-06
23 -1.000000E-06 2.999941E-03 2.819924E-06
24 -1.000000E-06 2.999952E-03 2.305564E-06
25 -1.000000E-06 2.999963E-03 1.795914E-06
26 -1.000000E-06 2.999973E-03 1.294742E-06
27 -1.000000E-06 2.999984E-03 8.022501E-07
28 -1.000000E-06 2.999995E-03 3.713278E-07

Why do I get only three values when selecting Node? If I display the nodes I have 28 in the inlet, what matches with the cell center exportation result.

I will appreciate your help!

LuckyTran · November 6, 2015, 13:34

Make sure you have correctly selected the same settings. You actually didn't output any velocities for the node output so maybe you made a mistake and chose the wrong surface.

If you want all the face values you should select "cell center" and select the inlet. If there are 28 faces, then there should be 30 nodes when you write the export.

jpina · November 6, 2015, 13:42

Dear LuckyTran,

I want the velocity values of the inlet boundary condition nodes.

Why if I select "nodes" I get only three results?

Thanks!

November 6, 2015, 13:20	Export velocity in node or in cell center	#1
jpina Senior Member Jordi Pina Join Date: Mar 2015 Posts: 157 Rep Power: 11	Hello! I am exporting the velocity in the inlet and surprisingly, when I select Location: Node here: I obtain: nodenumber x-coordinate y-coordinate velocity-magnitude 1.000000E+00 -1.000000E-06 2.999711E-03 1.394836E-05 2.000000E+00 -1.000000E-06 2.999839E-03 7.749091E-06 3.000000E+00 -1.000000E-06 2.999968E-03 1.549818E-06 When I select Location: Cell Center, I get the following values: cellnumber x-coordinate y-coordinate velocity-magnitude x-velocity 1 -1.000000E-06 2.999705E-03 1.408548E-05 2 -1.000000E-06 2.999716E-03 1.364665E-05 3 -1.000000E-06 2.999727E-03 1.314436E-05 4 -1.000000E-06 2.999737E-03 1.263530E-05 5 -1.000000E-06 2.999748E-03 1.211906E-05 6 -1.000000E-06 2.999759E-03 1.160301E-05 7 -1.000000E-06 2.999770E-03 1.108668E-05 8 -1.000000E-06 2.999780E-03 1.057400E-05 9 -1.000000E-06 2.999791E-03 1.003785E-05 10 -1.000000E-06 2.999802E-03 9.534894E-06 11 -1.000000E-06 2.999813E-03 9.015264E-06 12 -1.000000E-06 2.999823E-03 8.497882E-06 13 -1.000000E-06 2.999834E-03 7.980660E-06 14 -1.000000E-06 2.999845E-03 7.464186E-06 15 -1.000000E-06 2.999855E-03 6.947777E-06 16 -1.000000E-06 2.999866E-03 6.431521E-06 17 -1.000000E-06 2.999877E-03 5.915332E-06 18 -1.000000E-06 2.999888E-03 5.399133E-06 19 -1.000000E-06 2.999898E-03 4.882863E-06 20 -1.000000E-06 2.999909E-03 4.366684E-06 21 -1.000000E-06 2.999920E-03 3.850696E-06 22 -1.000000E-06 2.999930E-03 3.335010E-06 23 -1.000000E-06 2.999941E-03 2.819924E-06 24 -1.000000E-06 2.999952E-03 2.305564E-06 25 -1.000000E-06 2.999963E-03 1.795914E-06 26 -1.000000E-06 2.999973E-03 1.294742E-06 27 -1.000000E-06 2.999984E-03 8.022501E-07 28 -1.000000E-06 2.999995E-03 3.713278E-07 Why do I get only three values when selecting Node? If I display the nodes I have 28 in the inlet, what matches with the cell center exportation result. I will appreciate your help!

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November 6, 2015, 13:34		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,754 Rep Power: 66	Make sure you have correctly selected the same settings. You actually didn't output any velocities for the node output so maybe you made a mistake and chose the wrong surface. If you want all the face values you should select "cell center" and select the inlet. If there are 28 faces, then there should be 30 nodes when you write the export.

November 6, 2015, 13:42		#3
jpina Senior Member Jordi Pina Join Date: Mar 2015 Posts: 157 Rep Power: 11	Dear LuckyTran, I want the velocity values of the inlet boundary condition nodes. Why if I select "nodes" I get only three results? Thanks!