Rare earth magnets are already a necessity in many hybrid car batteries, so heat-capture devices made of the new multiferroic compound could be placed near the magnets.

The uncertain information may be probable, or fuzzy, or have compound uncertainty, and can be measured respectively with probability entropy, fuzzy entropy and hybrid entropy.

The paper presents a digital simulation analysis result of flow and heat transfer of a compound structure nozzle of hybrid motor, and also presents their comparison with experiments.