Qualitative analysis and quantitative discussion of evaluation indicators of field synergy principle

field collaboration;  indicators;  synergy angle;  Numerical simulation

The principle of field synergy was introduced, its evaluation indicators were discussed, five evaluation methods (simple arithmetic mean angle, volume-weighted average angle, astrometric modular average angle, modulus point product average angle and integral median angle were analyzed), taking the enhanced surface of the air conditioner as an example, a three-dimensional numerical simulation was carried out, and the calculation results showed that the overall change trend of the five synergistic angles was similar, which could reflect the synergy of the velocity field and the temperature field. Qualitative analysis shows that the modular mean angle not only has clear physical significance, but also considers comprehensive factors.