Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Impelemt an analytic equation in COMSOL
Posted 1 apr 2017, 15:56 GMT-4 Materials, Parameters, Variables, & Functions Version 5.2a 0 Replies
Please login with a confirmed email address before reporting spam
I am trying to implement this equation in COMSOL using the analytic function definition:
ΔT(r,z=0,t)=aq/2k ∫_0^(+∞) J_0 (λr)×J_1 (λa)×erf[λ(αt)^(1/2) ] dλ/λ
(The right form of the equation can be found in the attached document)
J0 and J1 are Bessel functions of the first kind of order 0 and 1.
erf is the error function.
r is the radius and t is the time.
My question is: how can I define the integral from zero to infinity on the variable, λ.
λ is an integration parameter. It does not depend on the geometry or the time.
Thank you for your help.
Regards,
Maha
Hello Maha H.B.
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.