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Units not considered

Posted 14 nov 2012, 09:49 GMT-5 Materials, Parameters, Variables, & Functions Version 4.3a 2 Replies

Martin Hediger
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Hi
I define a constant NA with units cm^-3 and a function f(x) = NA*exp(-(x/k)^2), where 'x' and 'k' are in meters making the units of f(x) essentially cm^-3.
However, in the variables list, where I define the function, the unit is not evaluated. What should I do?
2 Replies Last Post 18 nov 2012, 14:14 GMT-5
Nagi Elabbasi Facebook Reality Labs
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Posted: 1 decade ago 14 nov 2012, 18:15 GMT-5
I believe when you use built-in functions like exp() in variable definition they expect non-dimensional arguments and return non-dimensional values. You can add dimensions later as exp(a)[cm].
I believe when you use built-in functions like exp() in variable definition they expect non-dimensional arguments and return non-dimensional values. You can add dimensions later as exp(a)[cm].
Martin Hediger
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Posted: 1 decade ago 18 nov 2012, 14:14 GMT-5
Hey,
thanks for pointing this out.
Hey, thanks for pointing this out.

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