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Dear Nektar++,

 

 

I am learning to use Nektar++ and am very interested in the content related to Floquet stability analysis. But I encountered a problem:

 

I found an example of BiGlobal Floquet analysis of flow past a cylinder in section 7.5.12 of user-guide-4.0.0, but I dont know how to set the BasicFlow function. It says that In order to reconstruct the temporal behaviour of the flow, 32 time slices were considered over one period., I dont know how to implement this operation.

 

<FUNCTION NAME="BaseFlow">

<F VAR="u,v,p" FILE="cyinder_floq" />

</FUNCTION>

 

I attempted to find the cylinder_floq file mentioned in the above example but failed.

 

In addition, I find this in 7.4.2 Parameters:

 

N_slices : sets the number of temporal slices for Floquet stability analysis.

 

but I don't know how to use it.

 

In addition, I tried to put several .chk files from basic flow calculations in a folder as snapshots for stability analysis, but it didn't work.

 

Could you please provide me with this complete example? Or any other useful information will be appreciated.

 

Looking for some help, please!

 

Regards,

 

Xiangjun

x_j_shan@outlook.com

 

 

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