Thanks for sharing the observations Chinedu. So far I am keeping the source
term off for a while i.e. not needed currently. I am sharing the result and
description in the attachment.
On Tuesday, May 28, 2019 at 8:15:14 AM UTC+2, Chinedu Nwaigwe wrote:
>
> Wolfang is right. Negligible values
Hi Prof. Wolfgang! Thank you for the response. Indeed the solution is quite
reasonable and validated with analytical solution if diffusivity is kept
bigger.
Actually in my case I am using the metals and metallic alloys where the
thermal diffusivity are of the range of 1e-5 to 1e-4 m^2/s (I
Wolfang is right. Negligible values of diffusion or thermal coefficients
lead to a compete change in the physics of the problem. In that case if
there are source terms the solution might become negative and if there is
no source it will become steady. Things might get worse if advection term
is
On 5/27/19 11:01 AM, Muhammad Mashhood wrote:
> I am working with deal.ii step-26 to implement temperature
> dependent thermal diffusivity. Currently for thermal diffusivity values >
> order of 1e-2 the results are quit satisfactory but if I use the low thermal
> diffusivity
Dear users,
I am working with deal.ii step-26 to implement temperature
dependent thermal diffusivity. Currently for thermal diffusivity values >
order of 1e-2 the results are quit satisfactory but if I use the low
thermal diffusivity values like the order of 1e-6 to 1e-3, I get
