# Velocity vector field (not appearing) in Paraview

**URL:** https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936
**Category:** ParaView Support
**Created:** [July 23, 2020, 12:58pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936 "2020-07-23T12:58:15Z")
**Posts on this page:** 20
**Page:** 1

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### Author: ![Abid\_Riaz](https://discourse.paraview.org/user_avatar/discourse.paraview.org/abid_riaz/32/4542_2.png) [@Abid\_Riaz](https://discourse.paraview.org/u/Abid_Riaz)
#### Post date: [July 23, 2020, 12:58pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/1 "2020-07-23T12:58:16Z")

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Hello,

I have created a wing design within StarCCM+ and was not able to view a velocity magnitude scene showing the vectors without using a plane section showing a 2D view of the velocity contours, after looking online Paraview was suggested to show 3D vectors. However, I still cannot get my wing to show velocity vectors it appears a solid blue the same way it did within StarCCM+. I have attached a screenshot and any help would be massively appreciated!

 ![Wing](https://discourse.paraview.org/uploads/default/original/2X/e/e8f4d8032f41391f3108f10da3782e57322c08a6.jpeg)

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [July 23, 2020, 1:10pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/2 "2020-07-23T13:10:51Z")

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According to the legend on the right side, all your vectors have a magnitude of zero.  
Can you share your data ?

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### Author: ![Abid\_Riaz](https://discourse.paraview.org/user_avatar/discourse.paraview.org/abid_riaz/32/4542_2.png) [@Abid\_Riaz](https://discourse.paraview.org/u/Abid_Riaz)
#### Post date: [July 23, 2020, 1:18pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/3 "2020-07-23T13:18:38Z")

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Thank you for your response Mathieu,

What data do you need my lift and drag and flight conditions?

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [July 23, 2020, 1:19pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/4 "2020-07-23T13:19:45Z")

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Which format is your data ? Which file are you opening here ?

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### Author: ![Abid\_Riaz](https://discourse.paraview.org/user_avatar/discourse.paraview.org/abid_riaz/32/4542_2.png) [@Abid\_Riaz](https://discourse.paraview.org/u/Abid_Riaz)
#### Post date: [July 23, 2020, 1:25pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/5 "2020-07-23T13:25:28Z")

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The file I have opened within Paraview is .case. Exported through StarCCM+ where the wing model was used for CFD.

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [July 23, 2020, 1:58pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/6 "2020-07-23T13:58:57Z")

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Please share your .case file and all files listed within your .case file.

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### Author: ![Abid\_Riaz](https://discourse.paraview.org/user_avatar/discourse.paraview.org/abid_riaz/32/4542_2.png) [@Abid\_Riaz](https://discourse.paraview.org/u/Abid_Riaz)
#### Post date: [July 23, 2020, 2:00pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/7 "2020-07-23T14:00:58Z")

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This is my case file. I can also provide you with my StarCCM+ file if you need.

[Simulation.case](https://discourse.paraview.org/uploads/short-url/oWuDQn6ISF538g1vLfVCnwP0b90.case) (581 Bytes)

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [July 23, 2020, 2:04pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/8 "2020-07-23T14:04:54Z")

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You need to share the following as well :

```
scalar per element: Pressure Simulation *****.Pressure
scalar per element: VelocityMagnitude Simulation *****.VelocityMagnitude
scalar per element: Velocityi Simulation *****.Velocityi
scalar per element: Velocityj Simulation *****.Velocityj
scalar per element: Velocityk Simulation *****.Velocityk
vector per element: Velocity Simulation *****.Velocity
```

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<div class="post-metadata">

### Author: ![Abid\_Riaz](https://discourse.paraview.org/user_avatar/discourse.paraview.org/abid_riaz/32/4542_2.png) [@Abid\_Riaz](https://discourse.paraview.org/u/Abid_Riaz)
#### Post date: [July 23, 2020, 3:42pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/9 "2020-07-23T15:42:58Z")

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My velocity is 19.7m/s in the x direction and reference pressure is 101325pa. I’m a complete newbie to Paraview so excuse me if I misunderstand.

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### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [July 23, 2020, 3:52pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/10 "2020-07-23T15:52:26Z")

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You need to share the files i listed. Take a look into your files, it should contains files looking like that.

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### Author: ![Abid\_Riaz](https://discourse.paraview.org/user_avatar/discourse.paraview.org/abid_riaz/32/4542_2.png) [@Abid\_Riaz](https://discourse.paraview.org/u/Abid_Riaz)
#### Post date: [July 23, 2020, 4:05pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/11 "2020-07-23T16:05:24Z")

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Ah you need the export variables! Sorry, find them attached. I have another file named .geo is this required too? It exceeds the upload limit size.

[Simulation00000.Velocityj](https://discourse.paraview.org/uploads/short-url/u4V4OQwxcn1HsR8Qy3qJa39KYTW.Velocityj) (922.0 KB) [Simulation00000.Velocityk](https://discourse.paraview.org/uploads/short-url/vFeY6SRW80iSZCn2IgZQwd3PoXj.Velocityk) (922.0 KB) [Simulation00000.VelocityMagnitude](https://discourse.paraview.org/uploads/short-url/rBfCWrCqJRWvU1u1dDAAZMudrvT.VelocityMa) (922.0 KB) [Simulation00000.Velocityi](https://discourse.paraview.org/uploads/short-url/nlNqtm4R1cCr4JYZ8JRpyNPLS5.Velocityi) (922.0 KB) [Simulation00000.Velocity|att[Simulation00000.Pressure](https://discourse.paraview.org/uploads/short-url/tKG6ekCN5kR6oLCqIoWSEKaaT5e.Pressure) (922.0 KB) achment]  
[Simulation00000.Velocity](https://discourse.paraview.org/uploads/short-url/yt3qEYfXAvuCFG0M6AeqLLg60Om.Velocity) (2.7 MB)

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<div class="post-metadata">

### Author: ![Abid\_Riaz](https://discourse.paraview.org/user_avatar/discourse.paraview.org/abid_riaz/32/4542_2.png) [@Abid\_Riaz](https://discourse.paraview.org/u/Abid_Riaz)
#### Post date: [July 23, 2020, 4:13pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/12 "2020-07-23T16:13:12Z")

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I just want to share this image, this is something that I am trying to achieve.

 ![Screenshot 2020-07-23 at 17.12.29](https://discourse.paraview.org/uploads/default/original/2X/b/b4063d521598d3bb086d43c5b91350d2dc0c7dfa.png)

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<div class="post-metadata">

### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [July 24, 2020, 8:14am UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/13 "2020-07-24T08:14:14Z")

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The .geo file is needed. You can share it with a file sharing website.

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<div class="post-metadata">

### Author: ![Abid\_Riaz](https://discourse.paraview.org/user_avatar/discourse.paraview.org/abid_riaz/32/4542_2.png) [@Abid\_Riaz](https://discourse.paraview.org/u/Abid_Riaz)
#### Post date: [July 24, 2020, 8:23am UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/14 "2020-07-24T08:23:25Z")

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I hope that link works.

[https://drive.google.com/drive/folders/1f21gBIpsBGLB477NmynGpayDOa3jx6kx?usp=sharing](https://drive.google.com/drive/folders/1f21gBIpsBGLB477NmynGpayDOa3jx6kx?usp=sharing)

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<div class="post-metadata">

### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [July 24, 2020, 8:28am UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/15 "2020-07-24T08:28:24Z")

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You need to give access, I just requested it.

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<div class="post-metadata">

### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [July 24, 2020, 9:28am UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/16 "2020-07-24T09:28:59Z")

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Your velocity is indeed zero everywhere in the data you sent :  
 ![2020-07-24-112821_510x198_scrot](https://discourse.paraview.org/uploads/default/original/2X/4/4da228bed2acc284c94acf5b0ddc84e3e1bf5402.png)

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<div class="post-metadata">

### Author: ![Abid\_Riaz](https://discourse.paraview.org/user_avatar/discourse.paraview.org/abid_riaz/32/4542_2.png) [@Abid\_Riaz](https://discourse.paraview.org/u/Abid_Riaz)
#### Post date: [July 24, 2020, 9:52am UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/17 "2020-07-24T09:52:34Z")

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huh… that is really strange, I have just ran another simulation and get the result in the snapshot, I have exported the variables again if you wouldn’t mind taking a look.

[https://drive.google.com/drive/folders/1k0JJ7f-8\_kimVXhOrvv3Do3ywloF7HQe?usp=sharing](https://drive.google.com/drive/folders/1k0JJ7f-8_kimVXhOrvv3Do3ywloF7HQe?usp=sharing)

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<div class="post-metadata">

### Author: ![Abid\_Riaz](https://discourse.paraview.org/user_avatar/discourse.paraview.org/abid_riaz/32/4542_2.png) [@Abid\_Riaz](https://discourse.paraview.org/u/Abid_Riaz)
#### Post date: [July 24, 2020, 9:53am UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/18 "2020-07-24T09:53:16Z")

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![NACA4412](https://discourse.paraview.org/uploads/default/original/2X/e/ea8508e9ba578a1ff4149d2318ee3987a1e36f45.jpeg)

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<div class="post-metadata">

### Author: ![mwestphal](https://discourse.paraview.org/user_avatar/discourse.paraview.org/mwestphal/32/17_2.png) [@mwestphal](https://discourse.paraview.org/u/mwestphal)
#### Post date: [July 24, 2020, 12:35pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/19 "2020-07-24T12:35:07Z")

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Once again, you need to give access.

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<div class="post-metadata">

### Author: ![Abid\_Riaz](https://discourse.paraview.org/user_avatar/discourse.paraview.org/abid_riaz/32/4542_2.png) [@Abid\_Riaz](https://discourse.paraview.org/u/Abid_Riaz)
#### Post date: [July 24, 2020, 12:47pm UTC](https://discourse.paraview.org/t/velocity-vector-field-not-appearing-in-paraview/4936/20 "2020-07-24T12:47:47Z")

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[https://drive.google.com/drive/folders/1k0JJ7f-8\_kimVXhOrvv3Do3ywloF7HQe?usp=sharing](https://drive.google.com/drive/folders/1k0JJ7f-8_kimVXhOrvv3Do3ywloF7HQe?usp=sharing)

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