# no slip boundary condition does not hold

**URL:** https://discourse.paraview.org/t/no-slip-boundary-condition-does-not-hold/5234
**Category:** ParaView Support
**Tags:** vtk
**Created:** [September 1, 2020, 12:07pm UTC](https://discourse.paraview.org/t/no-slip-boundary-condition-does-not-hold/5234 "2020-09-01T12:07:36Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![yashika\_dhote](https://discourse.paraview.org/user_avatar/discourse.paraview.org/yashika_dhote/32/4753_2.png) [@yashika\_dhote](https://discourse.paraview.org/u/yashika_dhote)
#### Post date: [September 1, 2020, 12:07pm UTC](https://discourse.paraview.org/t/no-slip-boundary-condition-does-not-hold/5234/1 "2020-09-01T12:07:36Z")

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Dear All,

I have no slip boundary condition at x=0 ( y-plane), when I am trying to see velocity at edge it shows some velocity magnitude… like at x=0.0022232 v.y =100 on y plane. I understand that it is showing me values of adjacent data-point. Why it is no showing values at x=0? Is there any way to get values at that point???

Yashika

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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: [September 1, 2020, 12:16pm UTC](https://discourse.paraview.org/t/no-slip-boundary-condition-does-not-hold/5234/2 "2020-09-01T12:16:48Z")

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Please share more info. How are you “seeing” this ?

Please share data and steps to reproduce.

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### Author: ![yashika\_dhote](https://discourse.paraview.org/user_avatar/discourse.paraview.org/yashika_dhote/32/4753_2.png) [@yashika\_dhote](https://discourse.paraview.org/u/yashika_dhote)
#### Post date: [September 1, 2020, 5:12pm UTC](https://discourse.paraview.org/t/no-slip-boundary-condition-does-not-hold/5234/3 "2020-09-01T17:12:46Z")

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Hello Mathieu,

Thank you for the reply. I had vtu files output from basilisk([basilisk.fr](http://basilisk.fr)). I tried to see left boundary parameters using hover points. I have implemented no-slip boundary condition on left boundary, but in this image, second co-ordinate of u.x is y directional velocity showing some magnitude. It should ideally be zero. I am not getting any data for x=0 co-ordinate. I am attaching image for your reference. It is giving error for uploading vtu file.

Yashika

 ![velocity](https://discourse.paraview.org/uploads/default/original/2X/4/4a0d68f90d1e0f8441fa942972b63f6af2a1cfef.png)

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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: [September 2, 2020, 7:45am UTC](https://discourse.paraview.org/t/no-slip-boundary-condition-does-not-hold/5234/4 "2020-09-02T07:45:17Z")

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please share your data.