Corrigendum to The effect of the convective momentum transfer on the acoustic boundary condition of perforated liners with grazing mean flow

Schulz A, Ronneberger D, Weng C, et al. The effect of the convective momentum transfer on the acoustic boundary condition of perforated liners with grazing mean flow. Int J Aeroacoust 2021;20(5-7):737-772. doi:10.1177/1475472X211023842

The online version of the article has been updated with the following corrections:

1. In equation (31), the minus sign “1-…” in the two right equations has been changed to a plus sign. Correct equation (31) is as under:

$$\frac{{\tilde{\mathrm{\zeta }}}_{\mathrm{eff}}}{{\tilde{\mathrm{\zeta }}}_{\mathrm{W}}}=\frac{\omega }{{\omega }_{\infty }^{\prime }}\frac{Y_{\mathrm{eff}}}{Y\mathrm{W}}=1+\frac{k_x}{{\omega }_{\infty }^{\prime }}{\overline{u}}_{\mathrm{eff}}=1+\frac{{\overline{u}}_{\mathrm{eff}}/c_{ph}}{1\mathrm{-}{\overline{u}}_{\infty }/c_{ph}}$$

(31)

• 2. In equations (33) and (35), the superscripted “2” at the round bracket has been removed.

Correct equations are as under:

$$\mathrm{Nayfeh:}\frac{{\tilde{\mathrm{\zeta }}}_{\mathrm{add}}}{{\tilde{\mathrm{\zeta }}}_{\mathrm{W}}}=\frac{{\overline{u}}_{\mathrm{eff,0}}}{c_{ph}}{\left[1\mathrm{-}\left(\frac{{\overline{u}}_{\mathrm{eff,0}}}{c_{ph}}\right)\right]}^{\mathrm{-}1},\hspace{0.17em}{k}_0^{+}\text{≫}1$$

(33)

$$\mathrm{Auregan}\hspace{0.17em}\mathrm{et\hspace{0.17em}al}\mathrm{.}\frac{{\tilde{\mathrm{\zeta }}}_{\mathrm{add}}}{{\tilde{\mathrm{\zeta }}}_{\mathrm{W}}}=\frac{{\overline{u}}_{\mathrm{eff}}}{c_{ph}}{\left[1\mathrm{-}\left(\frac{{\overline{u}}_{\mathrm{eff}}}{c_{ph}}\right)\right]}^{\mathrm{-}1}$$

(35)