# Unaffected Results with Parameter

**URL:** <https://community.freefem.org/t/unaffected-results-with-parameter/2497>\
**Category:** General Discussion\
**Created:** [May 26, 2023, 1:39pm UTC](https://community.freefem.org/t/unaffected-results-with-parameter/2497 "2023-05-26T13:39:31Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![sumantkr](https://yyz2.discourse-cdn.com/flex030/user_avatar/community.freefem.org/sumantkr/32/2681_2.png) [@sumantkr](https://community.freefem.org/u/sumantkr)\
**Post date:** [May 27, 2023, 1:20pm UTC](https://community.freefem.org/t/unaffected-results-with-parameter/2497/5 "2023-05-27T13:20:49Z")

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I have changed the boundary condition and parameter value, which works here:

=========================

> real Ra= 10^4;

Boundary conditions:

> on(1,2,3,4,5,6, u1=0, u2=0, u3=0)  
> + on(1, T=sin(pi\*y))+ on(3, T=1) ;

======= Results=======

# ![ra4d](https://canada1.discourse-cdn.com/flex030/uploads/freefem/original/2X/7/73a598d4a01effc79ce07a71b26f142b153936f4.png)

However, could you please comment on identifying the orientation of a mesh as mentioned in [[3d labels questions](https://community.freefem.org/t/3d-labels-questions/2492)]?

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