Numerical simulation of heat transfer of human foot and heating experiments

This study intends to focus on the problem of cold resistance and warmth retaining of human foot under extremely low temperature conditions,a theoretical model for characterizing the bioheat transfer in feet was established based on the classical Pennes model.The corresponding one-dimensional analytical solution was obtained.Then the Fluent software was applied to simulate the three-dimensional bioheat transfer process.Results of four groups were got at temperatures(291 K) and(233 K) with or without heat source,respectively.To validate the theoretical predictions,an insole embedded with heating wire was made.Infrared thermometer and thermocouple data acquisition system were adopted to evaluate the working performance of the heating insole.The powering capability of lithium cell as used in the insole was also tested through subsequent measurement.This study can provide certain theoretical and experimental foundation for developing high performance heating insole in the near future.