Numerical study on role of foot of a flue organ pipe: relative phases in oscillations among pipe, foot and jet

Topical Issue - Musical Acoustics: Latest Advances in Analytical, Numerical and Experimental Methods Tackling Complex Phenomena in Musical Instruments

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Pressure fluctuations in the foot p_f − p₀ and those in the pipe p_p − p₀ together with averaged velocities ${\bar{v}}_{x}$ ${\bar{v}}_x$ and ${\bar{v}}_{y}$ ${\bar{v}}_y$ at the flue exit. (a) Oscillations for the Reference model. (b) Fourier spectra of the oscillations in the range (x0.02 ≤ t≤ 0.04) s for the Reference model. (c) Oscillations for the Mid model. (d) Fourier spectra for the Mid model. (e) Oscillations for the Short model. (f) Fourier spectra for the Short model.

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