attenuation

Physics

Cross-sectional area variation as a key factor for pressure wave attenuation in hilarious flows: a theoretical analysis.

Credit: International Journal by Multiphase Flow (2025). doi:10.1016/j.ijmultiphaseflow.2025.105138 Pressure waves propagating through the liquid containing bubbles in the tube experience considerable decay. Researchers at Tsukuba University have derived an equation explaining this phenomenon, showing that variations in the tube cross-sectional area contribute to wave attenuation, beyond the viscosity and compressibility of the liquid. Their analysis reveals that the rate of…