Actually we use Level set method in Comsol software for simulation of droplet moving in T-junction microchannel . But after a while the droplet diameter is reduced and I think it is about the law of conservation of mass.While we want to have steady diameter of droplet and the only way to solve this problem is Heaviside function.
Thanks.
Hello Iman Kazemi
"The heaviside function is identified either as "flc1hs" or "flc2hs". It accepts two arguments, one is the condition to satisfy so that the Heasiside function returns 1 and the second is a smoothing factor "s".
An example, if I want to define a non-zero constant value "c" solely within the domain x≤x1, then:
c*flc1hs(x1-x, s)
The transition from the value "c" to 0 is smoothed according to "s"."
I repeat Enrico Salvatti's response from the following RG discussion:
https://www.researchgate.net/post/What_is_the_proper_format_of_using_heaviside_function_in_COMSOL
Thanks a lot dear Dr Jules Lloyd Hammond,
Actually I Have knew it but I do not know how we can replace Heaviside function with all of functions in Level set method(in Comsol)?
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