Radiation of higher order modes from circular ducts with flow

Open Access

Figure 16

Phase of the acoustic pressure radiated by the mode (0, 0) as a function of the angle Θ. The results are given for the LP3 duct inlet in a static test configuration for a zero mean flow M₀ = 0 (black), a M₀ = 0.12 flow (dashed blue) and the scarfed lip geometry with M₀ = 0 (dashed-dot green).

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