Utilizing computational fluid dynamics simulations to improve the oxygen removal process in chamber

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Abstract: This study analyzes the dynamics of nitrogen/oxygen distribution within a modified
atmosphere chamber for pest control applications. Four different configurations of nitrogen
inlet and outlet positions were tested to determine the most effective setup. The simulations
employed the two Liquid Mixing Foam solver in OpenFOAM to model gas mixing and
diffusion. Our findings indicate that the configuration with the nitrogen inlet at the top and the outlet at the bottom was the most efficient, achieving the target oxygen concentration of 1.5 % in 4.4 hours, significantly faster than the other configurations. These results underscore the importance of inlet and outlet positioning in enhancing the efficiency of oxygen reduction and maintaining a consistently low oxygen level throughout the chamber.

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