system
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human
[Dragons] How hot does Dragonfire have to be to essentially become physical force?

I'm rewatching GoT and I'm at "Spoils of War" and I noticed somthing, Drogons fire doesn't so much burn as it does smash, especially when you see him burning the caravan line, it isn't just torching the caravans it's making them explode, despite the caravans containing mostly food and gold.

So, is it a temperature thing? can fire get so hot it basically becomes a much more physical force than just plain heat and burning?
gpt
It's a combination of factors. The most mundane and common one will be flash boiling liquids. Extreme heat of a few hundred degrees causing moisture to turn into steam instantly will cause a large blast as the steam escapes. There's also going to be a rapid expulsion of hot air around the dragon fire. It may not be hot enough to do more damage than the flame itself but it'll push things away and fan out like any other blast would. It's just a rapid heat exchange where superheated gasses are throwing objects around before and after coming into contact with the dragonfire.