[aspect-devel] Anisotropic Viscosity?

[Jonathan Perry-Houts]

Could that be done outside of the material models for backwards
compatibility? Like, if anisotropy is turned off then the material is
only responsible for returning a scalar, and otherwise then it needs to
return a tensor? Or is that too convoluted, and better to keep it general?

On 05/01/2015 06:41 PM, Wolfgang Bangerth wrote:
> On 05/01/2015 03:16 PM, Thieulot, C. (Cedric) wrote:
>>
>> for some of the work he would like to carry out in Utrecht in a
>> near-ish future,
>> a simple anistropic model would be a great asset.
>> Let’s talk at the hackathon.
> 
> It should actually only require two small changes in the assembly --
> essentially two-lines. The bigger issue is that you'd have to change all
> of the material models to multiply the viscosity they compute by the
> identity tensor. I'd say all in all less than an hour's work.
> 
> Best
>  W.
> 

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