[yt-users] velocity fields in yt

[Matthew Turk]

Yes, it could be off by 0.5*dx.  To calculate it correctly, do you
need to center the velocity field by re-filling boundary values?

On Wed, Aug 3, 2011 at 5:23 PM, Elizabeth Tasker <taskere at mcmaster.ca> wrote:
> Although actually, "RadialVelocity" is one place where it would also be an
> issue. It doesn't look like that is corrected for Zeus, if x-velocity etc
> are still face-centred. Am I reading that right?
>
>
>
> Elizabeth Tasker wrote:
>>
>> I was wondering if the x-velocity, y-velocity and z-velocity fields
>> themselves had been averaged to give a cell-centred quantity. There's no
>> need for them to be so, I just needed to know before I calculated a
>> cross-product to find the rotational potential of clouds I'd picked out.
>>
>> Thank you for the clarification :)
>>
>> Elizabeth
>>
>>
>> Matthew Turk wrote:
>>>
>>> Only in the DivV and VoritictySquared fields.  Where else should it be
>>> made?
>>>
>>> On Wed, Aug 3, 2011 at 5:04 PM, Elizabeth Tasker <taskere at mcmaster.ca>
>>> wrote:
>>>
>>>>
>>>> Hi,
>>>>
>>>> Quick question about the baryon velocity fields in yt: has any
>>>> correction
>>>> been made for the fact Zeus uses face-centred, not cell-centred,
>>>> velocities?
>>>>
>>>> Elizabeth
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