Yade

Units for time and magnitude

Asked by Li Zeng

Hello everybody,

I am simulating an experiment on AE. I used the recorder to get moment.file, but I don’t know how to convert the units of magnitude and time. The time should be the same as that obtained by O.dt, but I have not found a description of O.t units in YADE.

In my code, I use pa, kg/m^3, m/s, and the iterPeriod of PyRunner is 1000. I guess the unit of time is 1000*s?

regards,

Lili

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Robert Caulk
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ytang (ytang116) said : 		#1

If you use international units. the unit for time is second.

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Best Robert Caulk (rcaulk) said : 		#2

Hello,

Inside the moments file, you see a column titled "beginTime." This indicates the scene time at the start of the event.

As ytang says, the unit would be seconds if you are in a standard international system.

Cheers,

Robert

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Jan Stránský (honzik) said : 		#3

Hello,

> The time should be the same as that obtained by O.dt

if you mean "the unit of time...", then yes, O.time and O.dt has the same physical dimension.

> I guess the unit of time is 1000*s?

why?

Also see similar discussions [1,2,3,4].

Cheers
Jan

[1] https://answers.launchpad.net/yade/+question/684751
[2] https://answers.launchpad.net/yade/+question/251125
[3] https://answers.launchpad.net/yade/+question/170564
[4] https://answers.launchpad.net/yade/+question/672270

Revision history for this message
Li Zeng (lilly0303) said : 		#4

Thanks Robert Caulk, that solved my question.