Re: [sparta-users] grid velocities

[Matthew T. <146...@gm...>]

Hi Steve,

Thank you for your reply.

There is a website called nanohub which has module that uses SPARTA to
calculate Knudsen force.  I used this on-line tool to simulate the
same problem that I solved with 5Sept18 commit.   Results and scripts
are attached in email thread.  I have attached the temperature and the
velocity profile from nanohub.  The temperature looks the same but the
velocity looks very different,  My guess is that the nanohub Sparta is
an older version since it has been there for a few years.

The nano-hub velocity output has a profile and this makes sense to me.
I am concerned that the grid velocity outputs from the 5Sept18 commit
are not correct.  I am unsure if I have to correct synatx or some
other error in my code.  Is there anyway I could verify that the
output grid velocities are correct.  Would there be an earlier or
later commit that I should test or a test case that I should use.

Thanks
Matt


On Fri, Feb 15, 2019 at 6:52 AM Steve Plimpton <sj...@gm...> wrote:
>
> I'm CCing Michael on this.  Maybe he can comment.
>
> Steve
>
> On Mon, Feb 4, 2019 at 7:58 AM Matthew Thompson <146...@gm...> wrote:
>>
>> Below I have placed the plot of the results and I have attached my
>> input files.  The temperature, u^2 and v^2 look reasonable but the u,
>> v  and the magnitude of these sqrt(u^2 + v^2) seem to be random noise
>> with no distinguishable pattern.  Could someone please comment on
>> these plots and let me know if they are correct or if I have a syntax
>> error or some other error.
>>
>>  I am using Sparta-Sep18.
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