[yt-users] Pressure in Enzo methods

[Nathan Goldbaum]

Hi Dave,

The pressure field is probably coming from the definition in
yt/fields/fluid_fields.py.  If it doesn't show up for your dataset, it's
likely failing field detection.

I'm not sure whether we have a test dataset on yt-project.org/data that
uses HydroMethod 4 or 6.  Do you happen to have a small one I could play
with?

-Nathan

On Tue, May 5, 2015 at 10:40 AM, David Collins <dcollins4096 at gmail.com>
wrote:

> Hi, Matt--
>
> Thanks for your input.  In frontends/enzo/feilds.py, I see where the
> thermal_energy is computed based on HydroMethod=4,6, but there's no
> pressure field.  Which in principle is fine, since the computation in
> yt/fields/fluid_fields.py (in setup_fluid_fields) is fine.  Does that
> instance not get called?
>
> On Tue, May 5, 2015 at 12:26 PM, Matthew Turk <matthewturk at gmail.com>
> wrote:
>
>> Hi Dave,
>>
>> You can see all the logic inside yt/frontends/enzo/fields.py --
>> probably not too hard to add a new one, and then PR it!
>>
>> -Matt
>>
>> On Tue, May 5, 2015 at 11:02 AM, David Collins <dcollins4096 at gmail.com>
>> wrote:
>> > Hi, Everybody!
>> >
>> > I'm having a little trouble with getting pressure when using
>> HydroMethod=6.
>> > For instance,
>> >>>> ds0.all_data()['pressure']
>> >
>> > Traceback (most recent call last):
>> >   File "<stdin>", line 1, in <module>
>> >   File
>> >
>> "/Users/dcollins/local-2014-09-24-yt3/src/yt-hg/yt/data_objects/data_containers.py",
>> > line 233, in __getitem__
>> >     f = self._determine_fields([key])[0]
>> >   File
>> >
>> "/Users/dcollins/local-2014-09-24-yt3/src/yt-hg/yt/data_objects/data_containers.py",
>> > line 489, in _determine_fields
>> >     finfo = self.ds._get_field_info("unknown", fname)
>> >   File
>> >
>> "/Users/dcollins/local-2014-09-24-yt3/src/yt-hg/yt/data_objects/static_output.py",
>> > line 482, in _get_field_info
>> >     raise YTFieldNotFound((ftype, fname), self)
>> > yt.utilities.exceptions.YTFieldNotFound: Could not find field '('all',
>> > 'pressure')' in data0000.
>> >
>> >
>> >
>> > while this works for a run with HydroMethod = 0.
>> > Could someone give me the nickel tour of hydro method impacts setting of
>> > variables, and where I should look to make sure pressure is defined?
>> >
>> > Thanks!
>> > d.
>> >
>> > --
>> > -- Sent from a computer.
>> >
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>
>
> --
> -- Sent from a computer.
>
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