Firstly: I have created a 'Heat Flux' boundary condition that varies due to an external temperature. My model is a 1D model of heat transfer in solids.
In the field labelled 'External temperature' I placed my expression for T_ext. Is there a notation for the initial value of T I can use here? Something like T_0?
Secondly: I can create a waveform function definition that mimics T_0+deltaT*cos(w*t) in global or local functions, called say T_bc, of a sine wave, with angular frequency = 2*pi/tau (tau is a global parameter), and amplitude = deltaT (another global parameter). I cannot enter this as my T_ext boundary condition in the Heat Flux boundary selection dialogue box. Why?
Ben
In the field labelled 'External temperature' I placed my expression for T_ext. Is there a notation for the initial value of T I can use here? Something like T_0?
Secondly: I can create a waveform function definition that mimics T_0+deltaT*cos(w*t) in global or local functions, called say T_bc, of a sine wave, with angular frequency = 2*pi/tau (tau is a global parameter), and amplitude = deltaT (another global parameter). I cannot enter this as my T_ext boundary condition in the Heat Flux boundary selection dialogue box. Why?
Ben