caa a22 4500 397499647 CHVBK 20180308164529.0 cr unu---uuuuu 161202e199511 xx s 000 0 eng 10.1093/qjmam/48.4.483 doi (NATIONALLICENCE)oxford-10.1093/qjmam/48.4.483 THE SOUND FIELD GENERATED BY A PAIR OF CIRCULAR CYLINDERS MOVING IN UNSTEADY RECTILINEAR MOTION [Elektronische Daten] [M. R. GREEN, F. G. LEPPINGTON] Two parallel circular cylinders with equal radii a0 move with variable speed through an inviscid compressible fluid. Their centres are at (±h, 0), where h varies with time, so that they move along a common straight line with equal and opposite speeds. The acoustic velocity potential is determined asymptotically when the typical speed u0 of the cylinders is small compared with the mean sound speed c0 and the separation function h varies on a time scale t0 = a0/u0. Inner and outer asymptotic approximations are matched and the distant sound field is expressed in terms of line sources of monopole and quadrupole type © Oxford University Press Articles nationallicence GREEN M. R. Department of Mathematics, Imperial College of Science, Technology and Medicine, 180 Queen's Gatem, London SW7 2BZ aut LEPPINGTON F. G. Department of Mathematics, Imperial College of Science, Technology and Medicine, 180 Queen's Gatem, London SW7 2BZ aut The Quarterly Journal of Mechanics and Applied Mathematics Oxford University Press 48/4(1995-11), 483-505 0033-5614 48:4<483 1995 48 qjmamj https://doi.org/10.1093/qjmam/48.4.483 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/qjmam/48.4.483 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- GREEN M. R. Department of Mathematics, Imperial College of Science, Technology and Medicine, 180 Queen's Gatem, London SW7 2BZ aut NATIONALLICENCE 700 1- LEPPINGTON F. G. Department of Mathematics, Imperial College of Science, Technology and Medicine, 180 Queen's Gatem, London SW7 2BZ aut NATIONALLICENCE 773 0- The Quarterly Journal of Mechanics and Applied Mathematics Oxford University Press 48/4(1995-11), 483-505 0033-5614 48:4<483 1995 48 qjmamj Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford