A Note on Ring Source over Semi-Infinite Rigid Pipe

Abstract

In this study, semi-infinite rigid pipe is considered. An analytical solution is presented for the diffraction problem of acoustic waves spreading from a ring source by semi-infinite pipe. Applying the boundary and continuity conditions in conjunction with the Fourier transform technique, the boundary value problem is solved analytically. The influence of the problem parameters on the diffraction phenomenon is displayed graphically.

The effect of semi perforated duct on ring sourced acoustic diffraction

“…Validation of graphical results is obtained with unperforated (open) case. When the perforated part is absent, the present study is compared with the study of [12] and the results are found to be in good agreement.…”

“…In order to show the accuracy of the numerical results obtained in this study, ζ p is taken zero and the results are compared with the study of [12] for semi-infinite rigid duct. Figure 8 shows that the results are consistent, that is, the results obtained Figure 8.…”

“…Figure 8 shows that the results are consistent, that is, the results obtained Figure 8. Comparison of the diffracted field with the study of [12] for semi infinite rigid duct.…”

“…The spectral coefficient D (α) can be found easily from (14) while A (α), B (α) and C (α) are related to each other by the definition of the ring source given in (11,12). By using the boundary conditions on r = b, one obtains λkA (α) H…”

International Lis Pendens as a Contemporary Problem of Turkish International Civil Procedure

“…if the action is already pending before a foreign court) the jurisdiction of Turkish courts cannot be established under the said provision. 104 On the contrary, one can refer to international lis pendens if the same action is taken before the courts of different countries, both of which have international jurisdiction to hear the dispute. 105 Therefore if an action regarding the personal status of Turkish nationals is instituted before a foreign court and that court has established its jurisdiction, in the second action before the Turkish court the defendant should raise the objection to international jurisdiction of the Turkish court.…”