Fluids in porous media could resonate due to passing seismic waves when meeting certain conditions of excitation frequency and pore geometry. This study of the resonance of fluids can contribute to applications in hydrocarbon microtremor analysis, enhanced oil recovery methods, and environmental remediation of nonaqueous phase liquid contamination. In this study, the analytical expression of the frequency response function and temporal response function is derived to characterize the resonance of two-phase immiscible fluids in the constricted tube. The computational fluid dynamics modeling is used to validate this resonance theory by achieving a good agreement in the prediction of output/input amplification ratio in the frequency and time domains.

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