The effects of added hydrogen to the premixed of methane and air in a MEMS channel

In this paper, the effect of adding hydrogen to the composition of methane and air in a micro combustor is investigated by a three-dimensional numerical method. First, the results of the current study in determining the wall temperature of the micro combustion chamber are compared with those obtained from the experimental and numerical results of the previous research. By confirming the numerical solution of this study, the effect of adding hydrogen to the mixture of methane and air on the distribution of temperature, pressure and outlet velocity of the gases is calculated numerically. The numerical results show that increasing the percentage of hydrogen to the mixture of methane and air leads to nonlinear changes in the outlet velocity, pressure, and temperature. In addition, the results show that by increasing the percentage of hydrogen to 2.5% and 5%, the maximum outlet velocity of the gases and minimum temperature are produced in the micro combustor, respectively.