LEADER 01208nam0 22002651i 450 001 UON00145788 005 20231205102900.635 100 $a20020107d1955 |0itac50 ba 101 $afre 102 $aFR 105 $a|||| 1|||| 200 1 $aˆL' ‰exercice de la Chefaa et la preemption devant les juridictions françaises du Maroc$fEmile Brunot 210 $aParis$cLibrairie generale de droit et de jurisprudence$d1955 215 $a269 p.$d24 cm 410 1$1001UON00041204$12001 $aCollection des Centres d'Etudes Juridiques de Rabat$v045 620 $aFR$dParis$3UONL002984 686 $aMAR XV$cMAROCCO - GIURISPRUDENZA$2A 700 1$aBRUNOT$bEmile$3UONV087711$0235468 712 $aLibrairie Générale de Droit et de Jurisprudence: Pichon et Durand-Auzias$3UONV251548$4650 801 $aIT$bSOL$c20240220$gRICA 899 $aSIBA - SISTEMA BIBLIOTECARIO DI ATENEO$2UONSI 912 $aUON00145788 950 $aSIBA - SISTEMA BIBLIOTECARIO DI ATENEO$dSI MAR XV 001 $eSI MR 48898 5 001 996 $aExercice de la Chefaa et la preemption devant les juridictions françaises du Maroc$91276927 997 $aUNIOR LEADER 04509nam 22006855 450 001 9910484888603321 005 20251204110758.0 010 $a981-10-4828-2 024 7 $a10.1007/978-981-10-4828-9 035 $a(CKB)4100000011773898 035 $a(MiAaPQ)EBC6483711 035 $a(PPN)253856825 035 $a(BIP)79244401 035 $a(BIP)59465744 035 $a(DE-He213)978-981-10-4828-9 035 $a(EXLCZ)994100000011773898 100 $a20210218d2021 u| 0 101 0 $aeng 135 $aurcnu|||||||| 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 10$aAcoustic Analysis and Design of Short Elliptical End-Chamber Mufflers /$fby Akhilesh Mimani 205 $a1st ed. 2021. 210 1$aSingapore :$cSpringer Nature Singapore :$cImprint: Springer,$d2021. 215 $a1 online resource (161 pages) 311 08$a981-10-4827-4 327 $aIntroduction -- Solution of the Helmholtz equation in the Elliptical Cylindrical Co-ordinates -- Characterization of an Elliptical/Circular Cylindrical Chamber Muffler -- Analysis and Design of Long Chamber Mufflers -- Double-Tuning the Short Chamber Mufflers: Design for Broadband Attenuation -- Summary of Contribution and Directions for Future Work. 330 $aThis book presents a three-dimensional analysis of acoustic wave propagation in an elliptical waveguide, and applies the equations and concepts to design axially short elliptical end-chamber muffler configurations which are an important component of a complex multi-pass muffler used in a modern-day automotive exhaust system. A general solution of the Helmholtz equation in elliptical cylindrical co-ordinates is presented in terms of the Mathieu and modified Mathieu modal functions. This is followed by the tabulation and analysis, for the first time, of the non-dimensional resonance frequencies of the transverse modes of a rigid-wall elliptical waveguide for a complete range of aspect ratio. The modal shape patterns of the first few circumferential, radial and cross-modes are examined with particular attention to the pressure nodal ellipses and hyperbolae. An analytical formulation is then outlined for characterizing a single-inlet and single-outlet elliptical muffler with the inlet located on the end face and the outlet located either on the end face or side-surface. The ensuing chapter is devoted toward analyzing the Transmission Loss (TL) performance of different short end-chamber mufflers, namely (a) the straight-flow configuration having ports located on the opposite face, (b) the flow-reversal configuration with ports located on the same end face and (c) configuration with inlet port on the end face and outlet on the side surface. Design guidelines are formulated in terms of the optimal location of inlet and outlet ports which suppresses the deteriorating influence of certain higher-order modes, thereby delivering a broadband TL performance. Directions for future work are discussed toward the end. In summary, this book is a one-stop solution for a practicing automotive engineer designing mufflers, for an applied mathematician studying wave propagation in elliptical geometries, and also as a niche area within noise control engineering. . 606 $aAutomotive engineering 606 $aAcoustical engineering 606 $aAcoustics 606 $aEngineering mathematics 606 $aEngineering$xData processing 606 $aMathematical physics 606 $aAutomotive Engineering 606 $aEngineering Acoustics 606 $aAcoustics 606 $aMathematical and Computational Engineering Applications 606 $aTheoretical, Mathematical and Computational Physics 615 0$aAutomotive engineering. 615 0$aAcoustical engineering. 615 0$aAcoustics. 615 0$aEngineering mathematics. 615 0$aEngineering$xData processing. 615 0$aMathematical physics. 615 14$aAutomotive Engineering. 615 24$aEngineering Acoustics. 615 24$aAcoustics. 615 24$aMathematical and Computational Engineering Applications. 615 24$aTheoretical, Mathematical and Computational Physics. 676 $a629.23 700 $aMimani$b Akhilesh$01220136 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910484888603321 996 $aAcoustic Analysis and Design of Short Elliptical End-Chamber Mufflers$92821371 997 $aUNINA