On Tuesday, 2 July 2013 19:23:05 UTC+5:30, Robert Cimrman wrote:On 07/02/2013 03:46 PM, Ankit Mahato wrote:
>
>
> On Tuesday, 2 July 2013 19:06:16 UTC+5:30, Ankit Mahato wrote:
>>
>>
>>
>> On Tuesday, 2 July 2013 13:58:20 UTC+5:30, Robert Cimrman wrote:
>>>
>>> Now it remains to implement a robust flow solver. Even this small example
>>> shows, that the solution is not obtained easily - try decreasing the
>>> viscosity,
>>> and/or increase the Dirichlet velocity - the solver would not converge.
>>>
>>>
>> Yes R,
>>
>> The solution is not obtained easily.
>> I am looking into it.
>>
>> PS: Here are blog posts for week 1 & 2
>> Kindly tell me if this will do before I send it to terri oda:
>>
>>
>> http://ankitmahato.blogspot.in/2013/07/python-software-foundation-sfepy-gsoc.html
>>
>> http://ankitmahato.blogspot.in/2013/07/python-software-foundation-sfepy-gsoc_2.html
>>
>>
> Hi R,
>
> Just wanted your views.
> Does the problem of Navier-Strokes solver lies with the implementation or
> the algorithm which is used.
Mostly the algorithm, but it might be also the formulation. I am far from CFD,
but people there seem to be preferring a dimensionless form of the
incompressible NS equations. It also depends on the discretization/FE spaces
used. It's really a broad subject, and there is still no a silver bullet
solver. Maybe ask your thesis advisor/colleagues doing CFD? Searching the net
is really of no help here, as it returns so many things... Expert advice is
needed :)
Yes R dimensionless form of the
equations are preferred. I have implemented Patankar's SIMPLE algorithm previously (http://en.wikipedia.org/wiki/SIMPLE_algorithm) [also SIMPLER and SIMPLEC] when I did CFD course but using Finite Difference Method. I will look into it if I find FEM approach.
Also I wanted to ask you if we need to stick to FEM for CFD because people use Finite Volume Method [FVM] for CFD.
r.
>> Cheers,
>>> r.
>>> PS: As mentioned in Terri Oda's e-mail, you should blog about your work
>>> so far
>>> ASAP!
>>>
>>> On 07/01/2013 06:12 PM, Ankit Mahato wrote:
>>>> awesome :)
>>>>
>>>> On Monday, 1 July 2013 15:05:16 UTC+5:30, Robert Cimrman wrote:
>>>>>
>>>>> Hi,
>>>>>
>>>>> I have removed the "3d only" restriction from the Navier Stokes and
>>>>> related
>>>>> terms. There is also a new example:
>>>>> examples/navier_stokes/navier_stokes2d.py.
>>>>>
>>>>> r.
>>>>>
>>>>
>>>
>>>
>