Hi Will,

Thanks for your interest in PyFR.

Does it mean that for fully incompressible fluid, artificial compressibility 
should be "ac-zeta = 0.0” ?

No. You need some artificial compressibility for the approach to work.

1. How can I continue my simulation from the latest time step?

You can restart from a .pyfrm/.pyfrs file (pyfr restart mesh.pyfrm 
solution.pyfrs) - see the User Guide online.

2. Is it able to map the flow field from one case to another case, even 
regardless the difference of mesh? (Something like "mapFileds" in OpenFOAM)

No.

3. Is there any command in PyFR that we can export all .pyfrs files to .vtu 
files at once rather than export one time step by one time step?

There have been other threads on this. For various reasons, it is best just to 
write a quick BASH script.

4. The output file is ".vtu", which is unreadable by text readers. Is there any 
command to export readable text file such as vtk, csv or text for the entire 
fluid field for post-processing? (Pretty similar to the output "U" and "p" file 
in OpenFOAM)

5. I am quite not sure what "[solver-dual-time-integrator-multip]" is in 
dual-time-stepping solvers, since it is deletable and simulation becomes much 
faster when it is deleted.

Which simulation?

Thanks

Peter

Dr Peter Vincent MSci ARCS DIC PhD FRAeS
Reader in Aeronautics and EPSRC Fellow
Department of Aeronautics
Imperial College London
South Kensington
London
SW7 2AZ
UK

web: 
www.imperial.ac.uk/aeronautics/research/vincentlab<http://www.imperial.ac.uk/aeronautics/research/vincentlab>
twitter: @Vincent_Lab<https://twitter.com/Vincent_Lab>





On 31 Oct 2017, at 03:45, Will <[email protected]<mailto:[email protected]>> 
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________________________________

Thanks Freddie,

Does it mean that for fully incompressible fluid, artificial compressibility 
should be "ac-zeta = 0.0" ?

Some other questions.

1. How can I continue my simulation from the latest time step?

2. Is it able to map the flow field from one case to another case, even 
regardless the difference of mesh? (Something like "mapFileds" in OpenFOAM)

3. Is there any command in PyFR that we can export all .pyfrs files to .vtu 
files at once rather than export one time step by one time step?

4. The output file is ".vtu", which is unreadable by text readers. Is there any 
command to export readable text file such as vtk, csv or text for the entire 
fluid field for post-processing? (Pretty similar to the output "U" and "p" file 
in OpenFOAM)

5. I am quite not sure what "[solver-dual-time-integrator-multip]" is in 
dual-time-stepping solvers, since it is deletable and simulation becomes much 
faster when it is deleted.

Best regards,
Will

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