Obstructions placed to the flow have a significant effect on mixing of the fluids, particularly in the miniaturized scales. In this study, the impact of variation in axially aligned wire assembly was investigated for mixing of nitrogen and
hydrogen gases towards prospective reactor design for ammonia synthesis. The wires were placed in a square-pitch pattern having 9 (Monolith A), 13 (Monolith B) and 37 wires (Monolith C) wires respectively. For the same inlet velocity of the gases, the contour plots indicate that Monolith B is the optimal design based on the consistent mixing dynamics observed through the velocity contour plot.