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Magnetic refrigeration near room temperature is a promising non-conventional technology with a realistic potential to replace the conventional cooling systems such as vapor compression. Active magnetic regenerator (AMR) is the key component determining the cooling performance of a magnetic refrigerator. A numerical analysis of the active magnetic regenerator was performed considering two different regenerator geometries (a) corrugated and (b) flat plate for a range of utilization. Gadolinium was taken as the magnetocaloric material and water as the heat transfer fluid. The numerical simulation was performed using ANSYS Fluent with user-defined functions. The peak performance for both the regenerators was found at utilization value of 0.8. It was found that the corrugated plate regenerator exhibited larger temperature spans than the flat plate regenerator in the given range of utilization. The maximum no-load temperature span of corrugated plate regenerator was seen to be around 5% higher than the flat plate.