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PerennialII
#2
Sep6-08, 12:32 PM
Sci Advisor
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P: 1,101
Hi Skyeagle,

Comsol syntax is pretty much identical to that of Matlab (well they share plenty of history) ..... so for your equation you might try something like:

(10^7)*exp((-10^3)*x^2)*(t<=2)

I'm assuming what you're after with the "x" is a cartesian coordinate (or that is how comsol would interpret from the above)? The "t<=2" evaluates as "1" for t <=2 (assuming your t is in seconds) and 0 otherwise (you can do the same thing with a simple "if" - construct or use several of the other available step - function - lookalikes, if you for example wish to smoothen the transition to 0 value).