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Piecewise function
Posted Aug 18, 2010, 7:04 a.m. EDT 1 Reply
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Hi there,
I wish to define a boundary heat flux that turns on and off with time. I am a little confused with how this process is carried out. I thought that it would be possible to stipulate values within function sections. However what will my argument be and how do I define the piecewise function within the boundary heat flux section?
Any help would be very much appreciated.
Regards
Mathew
I wish to define a boundary heat flux that turns on and off with time. I am a little confused with how this process is carried out. I thought that it would be possible to stipulate values within function sections. However what will my argument be and how do I define the piecewise function within the boundary heat flux section?
Any help would be very much appreciated.
Regards
Mathew
1 Reply Last Post Aug 20, 2010, 2:19 a.m. EDT
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Posted:
1 decade ago
Hi
I would suggest to define a function of time "t" (use "t[1/s]"as argument when calling) that defines your shape (and use smoothed turn on/off) and then you multiply with an amplitude (with units) value
you call then the function in your boundary condition
--
Good luck
Ivar
I would suggest to define a function of time "t" (use "t[1/s]"as argument when calling) that defines your shape (and use smoothed turn on/off) and then you multiply with an amplitude (with units) value
you call then the function in your boundary condition
--
Good luck
Ivar