Hi, I'm new here and i'm really hoping that someone could answer my question. i am trying to design a PDE but the problem about this is that the temperature caused by detonation (3461 K) is so high that it is really difficult to find a suitable material for the detonation chamber and thermal barrier coating (TBC). Does anyone have a suggestion on this? and if i were to use pyrolytic graphite for the TBC, how am I supposed to calculate what is the required thickness, if the melting point of my detonation chamber material is 1773K? i dont have the rate of heat flow. is there an industrially typical/ideal heat flow rate across the walls of engines? Thanks in advance!