Adiabatic (adiabat, from ancient Greek ἀδιάβατος (adiabatos) "not passing through") is a term used in flow simulation. No heat exchange takes place between adiabatic components and their surroundings.



An adiabatic system would therefore be one that is perfectly thermally insulated and does not absorb or emit heat.

Adiabatic building elements play an important role in building development, for example, to reduce thermal bridges that unintentionally lead heat or cold into the building interior. Insulated systems are also important in the development of technical products in order not to interfere with the function of adjacent components via unwanted heat generation.