club_84
2012-11-12 03:26:44 UTC
I have a simple 1D model, to which I want to apply a transient temperature signal at one of the boundaries. I don't know how to go about this.
The model apes climatic variations at the surface of the earth, where the periodicity is related to long-term temperature changes, estimated by the following function:
T = T0 + deltaT*cos(w*t)
where delta T might be something like 5--10K, w is angular frequency in radians = 2*pi/40000 (period of 40,000 years).
(in latex math mode if you want):
T=T_0 + \Delta T \cos (\omega t).
Loading Image...
I have (I think) created this using the Waveform function as a local Definition (name of function is 'wv2'):
Loading Image...
I think I need to add a heat flux condition and then apply it as an 'Inward heat flux', choose a suitable heat transfer coefficient, and then specify the external temperature (T_ext) as my wv2 function. How?? The input seems to refuse the use of the wv2 function.
Loading Image...
I cannot discover where I am going wrong.
The model apes climatic variations at the surface of the earth, where the periodicity is related to long-term temperature changes, estimated by the following function:
T = T0 + deltaT*cos(w*t)
where delta T might be something like 5--10K, w is angular frequency in radians = 2*pi/40000 (period of 40,000 years).
(in latex math mode if you want):
T=T_0 + \Delta T \cos (\omega t).
Loading Image...
I have (I think) created this using the Waveform function as a local Definition (name of function is 'wv2'):
Loading Image...
I think I need to add a heat flux condition and then apply it as an 'Inward heat flux', choose a suitable heat transfer coefficient, and then specify the external temperature (T_ext) as my wv2 function. How?? The input seems to refuse the use of the wv2 function.
Loading Image...
I cannot discover where I am going wrong.