matteobernardini / streams Goto Github PK

For swbli case, the boundary condition specified at outlet is non reflecting boundary condition but which non reflecting boundary condition is specified is not mentioned anywhere, Can you please give information on which kind of non reflecting bc is implemented at outlet?

Hello,
does w(1,i,j,k) anywhere in the code represent the instantaneous density at particular i,j,k?

Thank you

Does the variable dtsave = 5 in input.dat file signify that field files are written after every 5 seconds?
What information is being obtained in plotxy_000.dat file?

Hello,
I tried to run supersonic channel again in CPU and compiled using intel(2020) compiler.

Compilation was successfully done with no errors or warnings but still when I tried to run the code with enable_plot3d and enable_vtk as 1, it showed segmentation error. When I disabled enable_plot3d and enable_vtk and tried to run it again, it showed segmentation error while writing .bin files.

So, I wanted to know if there are any changes that are supposed to be done in code when writing plot3d and vtk files

Hello,
I tried to run the code, and it successfully ran for 158910 iterations, but when I again resubmitted the job it threw an error as shown in this file.
sbli_supersonic.log
But it had stat.bak file and no stat.bin file was generated in the last run, so is it possible to make the code read stat.bak instead of stat.bin and continue the iterations.

Hello,
I am trying to understand at what actual time steps are field files getting generated. The time variable mentioned in output files are at intervals of 5 as specified by us using "dtsave", but what does the digit signify. And is the time step constant or does it vary?
Thank you

The properties in the cf files are written for which loation of x,y,z?

Hello,
I have run few cases using STREAmS 1, is it possible to continue those runs using STREAmS 2.

Is the data obtained in plotxy_nnn.dat files the mean data or instantaneous data at the end of a particular run?

Hello,
Can you please provide insight on what each column in cfz_nnn_nnnn and wavplot_nnn_nnnn.dat files represent. These files are generated but there is not much information on what data it is trying to write.

Hello,
There are few doubts I had related to the variable deflec_shock in input file.

According to the explanation in "preparing input.dat file", deflec_shock is the shock angle (beeta) whose default value given was 8deg in the input.dat file, but according to the paper https://doi.org/10.1016/j.cpc.2021.107906 the 8deg given is mentioned as Incidence angle of shock generator (theeta). So, I wanted to know what exactly the term deflec_shock is specifying, is it the shock angle (beeta) or deflection angle(theeta).

And if its the deflection angle what is the maximum deflection angle that we can feed into the input file.

Hello,

1. I wanted to know at what intervals are field files getting generated, if I want them to be written for every 10,000 iterations is it possible to do so? or is there any other logic behind how these files are being written?
2. If I wanted to run the SBLI case for different Mach Numbers or for different shock deflection Angles will I have to change the variable "xshock_imp"?

Thank you.

Hello,
I am trying to do low frequency unsteadiness study for sbli case and I wanted to know how to obtain time series data.
Is it possible for us to change few parameters in input.dat and get time-series data or should we ourselves make changes in code to get that data?

Thank You

Hello,
Are the turbulent kinetic Energy terms such as advection, Turbulent transport, production being written in any of the output files, or should we separately make the solver print these terms.

Hello,
For the case of Shock wave - Boundary layer interaction,

1. I wanted to know if there is any file that is generated with pressure information or should we calculate it using the convective variable vector that is obtained to obtain the mean wall pressure plot.
2. Is P1 same as Pinf here?
3. How to obtain the proper value of Interaction length(L)

          wavplot has 22 columns, can you provide information on what each column represents.

Originally posted by @Sushmitharao46 in #19 (comment)

Which value of T(free stream temperature) should be considered to calculate free stream velocity.

Is there a possibility of adding probes, to get time series data at a particular location for low frequency unsteadiness study?

Thank you

What is the maximum deflection angle for which the code works?

If I want to simulate a complete new case on Shock impingement on flat plate with input conditions which are different from example test case given in the repository, do I need to change the database_bl.dat file. If yes, then what are the changes that I am supposed to do in the file database_bl.dat.

Thank you

I generated plotxy files and while appending it, there were zones where no data was printed.


How to get rid of these white spaces that are generated between each plotxy file?
Thank you

Can you also let me know how can I look at mean flow properties such as mean flow pressure, density and velocity.
I tried to get the slice data and average it for mean flow properties but it has not worked. Is there any way to obtain this data.

Thank You

Hello,
I am trying to understand the unsteady mechanism in the Interaction Zone, in order to do this I will need the field files to be written at a constant time interval, is it possible for me to print field files at a constant time interval?
Thank you

Hello,
The paper that is referred here talks about impinging shock and reflected shock but nothing about reattachment shock, neither did I see a reattachment shock in schlieren image that I generated after running the case of SWBLI.
So, will the reattachment shock be captured, if I do necessary changes in input file for the case of SWBLI?

The reference temperature in input.dat file of Shock-Wave boundary layer interaction, is it the freestream temperature?

Hello,
Can you please clarify if in the code j=1 represents wall or j = 4 (because of three ghost nodes) represents wall?

Thank you

Hello,
I wanted time series data at certain points, so I added few lines at 2 places. I have attached screenshots of the same. Can you please confirm if it is correct, because those edits which I considered to be correct are not fetching me required results.

1. These few lines I have added in Solver.F90, I was tryin to open 7 new files at 7 different locations.
   
2. I added the below lines in printres.F90 to get the data with 7 columns (iteration number, time step, rho, rho-u, rho-v, rho-w, rho-e)
   at 7 different locations among which first 4 locations are at wall
   

Thank You

What data is stored in wavplot files?

What does each column in file dt_limitations represent?