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[Jan Stránský <question270057@xxxxxxxxxxxxxxxxxxxxx>]

Question #270057 on Yade changed:
https://answers.launchpad.net/yade/+question/270057

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hi Jabrane,

there are no physical dimensions in Yade, just numbers [1,2] :-) Depending
on what you give on input, you get on output.

example:
distance = 10
time = 2
velocity = length/time = 5

if you have [distance]=m, [time]=s, then velocity is 5 m/s
if you have [distance]=km, [time]=s, then velocity is 5 km/s
if you have [distance]=km, [time]=h, then velocity is 5 km/h
if you have [distance]=feet, [time]=day, then velocity is 5 feet/day

but the number 5 is always the same, but its meaning depend on what is
acually distance and time. Yade works the same, it just computes numbers,
regardless their physical meaning. The results of Yade are again just
numbers. What is the physical dimension of the results depends on what you
consider is physical dimension of inputs.

So you can have any physical dimension, you only have to be consistent.

cheers
Jan

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




2015-08-06 11:16 GMT+02:00 Yor1 <question270057@xxxxxxxxxxxxxxxxxxxxx>:

> New question #270057 on Yade:
> https://answers.launchpad.net/yade/+question/270057
>
> Hi everyone,
>
> When we create the model, we have to define the coordinates of upper
> corner and lower corner.
> how do i to have the dimensions in millimeters and not in centimeters ?
>
> Jabrane.
>
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