Overall I have been really impressed with the smoke and pyro tools in Houdini. However, I am having a lot of trouble creating realistic flames.

Volumetric flames come out either blobby or soft, even with very high grid densities.

The best results I have had have been advecting particles through the sim and then meshing the particles with a particle fluid mesh to render as flames. The flames have much more detail this way, but I have some trouble getting a convincing shader for this approach.

I am wondering if anyone has good example of amazing flames done in Houdini or if they can give me some guidance on how I can improve the results I'm describing. The flames I have seen posted thus far have been ok, but not incredible in my opinion.

I would post what I have done, but unfortunately I am under NDA.