The connection between air flow regime and heat transfer in the boundary layer of the brake disc cooling unit

The boundary layer of the air flow blowing surfaces brake mechanism prevents heat transfer from heated surfaces. obtained analytical dependences velocities` and temperatures` distribution in represent field as a multilayer structural model, laws change velocities temperatures depend on various sub layers layer. According to these dependencies, thermal model “ventilated disc - external condition” was developed. thicknesses are determined by processes. For working disc, determining criterion is thickness diffusion layer, while for ventilation apparatus, estimating In future, developed – should be basis calculations designing disc-shoe type mechanisms.