Comparison of different fluid-thermal-electric multiphysics modeling approaches for thermoelectric generator systems

This work proposes a novel fluid-thermal-electric multiphysics numerical model to predict the performance of thermoelectric generator systems applied fluid waste heat recovery, with consideration coupling effects fluid, thermal, and electric fields. The comprehensive simulations system are performed via COMSOL coupled solver. Besides, effect neglect parasitic on output is investigated through comparison results predicted by ANSYS separate solver, wherein fluid-thermal field computed first, then thermal-electric field. show that power solver 8.52% lower than at inlet air temperature 550 K velocity 30 m/s due heat. TEG less affected boundary conditions COMSOL. Finally, experimental solved shows lowest deviation 2.81%. proposed can guide modeling recovery.