[aerosayan]

I've looking at block structured AMR capable codes like AMRex, CHOMBO, SAMRAI.


Example : https://amrex-codes.github.io/amrex/gallery.html



Based on my rudimentary understanding of these codes, it looks like they don't generate structured grids that conform to the body (aerofoil, rocket etc).


They don't have to. That's one of the benefits of using these codes. Since some of them were designed with the intention of solving exascale simulations of stuff like supernova explosions, black hole formation etc etc, it makes sense why the generated grid doesn't need to conform to any body.


It's not to say that the codes won't be able to solve for flows over bodies. They can. As per my rudimentary understanding, they use the Immersed Boundary Method to basically represented the boundary conditions near the body.


However, in the world of viscous flow with boundary layer interactions, it would be beneficial to generate a structured grid which conforms to the body, in order to better resolve the boundary layer flow.

At the same time, it would be really beneficial to have the same local block structured refinement capabilities of the previously mentioned codes.


The expected result is shown in the attached picture.



The thing is, I have not been able to find any CFD code that does both. (Most probably because I don't know where to look.)



I only found one paper by E. Steinthorsson, David Modiano and Phillip Colella. "Computations of Unsteady Viscous Compressible Flows Using Adaptive Mesh Refinement in Curvilinear Body-Fitted Grid Systems" - NASA.


The attached picture was taken from the paper mentioned above. And we can see that a body conforming structured AMR code would be very helpful in transient simulations of aerofoils, turbine blade cascades, CD nozzles, and other applications of structured grids.


Anyone know of any paper and/or codes developed using such a body conforming block structured AMR algorithm?

Thanks
sayan