For non-adiabatic boundary condition of micro-centrifugal-impeller

after heat transfer process was analyzed in the micro-centrifugal-impeller

the disk and blade were treated as annular and straight fins respectively

then a new math model was built to describe the phenomenon in it;the model was modified for actual situation based on differential equations of heat conduction and thermal equation of fins;after 3-D numerical simulation validation

the model showed that

at least

4% accuracy improvement was achieved compared with zero-dimension-network-model;compared with old design philosophy

which only assessed heat addition effect by numerical simulation

the new one

with the help of our model

can improve 30% efficiency and 11% total pressure radio

and cut the design cycle down to 14.3%.