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Dear all:
I want to use the Nektar++ to conduct structural sensitivity analysis on the flow problem. I can get direct and adjoint modes, but I don't know how to get the sensitivity of base flow modification and local feedback (as shown in figure).
Can anyone help me?
Looking forward to your reply!
Best regards,
Xiangjun Shan
从 Windows 版邮件<https://go.microsoft.com/fwlink/?LinkId=550986>发送
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Dear all,
I am trying to calculate a base flow with the steady-state solver using selective frequency damping.
Recently, an error, shown in the picture below, was given when I tried to run in parallel the IncNavierStokesSolver for my new mesh-refined case using mpirun -np:
[cid:53ae808d-8f8c-4062-9c1e-374f9c477a1c]
However, this error has never occurred before when:
1.using serial running for the same session file/ setting of this mesh-refined case;
2.using parallel running for other cases so far, which are all with much coarser meshes;
So I want to know what triggered this kind of problem and how to deal with it.
Thanks in advance for the help.
Best regards,
Mona.
Dear all,
We are planning to hold the next Nektar++ workshop on the 13th-15th
December 2021 at Imperial College London. So please save the date!
The format will be hybrid and we plan to accommodate a fixed number of
in-person attendees as well as allowing others to participate remotely.
The main sessions of talks will likely be in the afternoon (UK time) to
allow as many of you to join as possible.
We are still finalising the details, but will put more information
online soon, including how to register.
We are looking forward to seeing as many of you as possible in London
and being able to catch-up with our community again!
Kind regards,
Chris
--
Chris Cantwell
Senior Lecturer in Aeronautics
Department of Aeronautics
Imperial College London
South Kensington Campus
London SW7 2AZ
Tel: +44 (0)20 759 45050
Email: c.cantwell(a)imperial.ac.uk
www.imperial.ac.uk/people/c.cantwell
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Hi All,
What is the proper way to specify a noise force and a body force at the
same time?
I am new to Nektar++, and am attempting to run a simulation of turbulent
channel flow using a body force to drive the bulk flow, and a noise force
to generate some initial "turbulent-like" fluctuations of the velocity
field. However, when I setup the case based on the details found in the
user guide (Forcing (nektar.info)
<https://doc.nektar.info/userguide/latest/user-guidese10.html#x16-810003.5> ),
the resulting flow field doesn't show any "noise component". Is there some
error in my settings for this case?:
<NEKTAR>
<CONDITIONS>
...
<FUNCTION NAME="BodyForce">
<E VAR="u" VALUE="-(Re*Kinvis/H)^2/H" />
<E VAR="v" VALUE="0" />
<E VAR="w" VALUE="0" />
</FUNCTION>
</CONDITIONS>
<FORCING>
<FORCE TYPE="Body">
<BODYFORCE> BodyForce </BODYFORCE>
</FORCE>
<FORCE TYPE="Noise">
<WHITENOISE> 0.5 </WHITENOISE>
<UPDATEFREQ> 10 </UPDATEFREQ>
</FORCE>
</FORCING>
</NEKTAR>
Regards,
*Marc Goldbach*
PhD Student, Department of Mechanical Engineering
University of North Carolina at Charlotte