Matches in SemOpenAlex for { <https://semopenalex.org/work/W2805229775> ?p ?o ?g. }
Showing items 1 to 96 of
96
with 100 items per page.
- W2805229775 abstract "This thesis investigates the influence of acoustic metamaterials, or linings with graded properties, on the performance of open termination ducts and mufflers working within low frequency range. The functioning of such linings has been associated to the Acoustic Black Hole effect. These structures work on the principle of impedance matching, and in theory, have been realized to achieve total absorption of sound in closed terminating channels. This theoretical understanding, backed up with numerical analyses, has been reviewed to develop the concepts underlying this research work. Firstly, a semi analytical model has been formulated for an open expansion chamber, embodied by the muffling section. Plane wave radiation incident through inlet end of the muffler, is made to undergo impedance matching while traversing through the metamaterial lined flare of varying wall admittance. The impact of lining, in absence and presence of losses due to visco-inertial and thermal energy exchanges has been analyzed. Parametric variations of flare shape and muffler dimensions have been compared. Finally, considering particular cases, comparative analysis with finite element method based model has been made. The semi-analytical models have been validated against numerical results for acoustical properties such as transmission loss and reflection and absorption coefficients in the transmission regime, while observing a good agreement between them. It has been concluded that the structured lined flare has higher performance capability than the simple expansion chamber. Power law function based flare shape can be considered to be steady in operation over the low frequency range. The findings of this thesis show that the application of acoustic metamaterials for sound absorbing or muffling devices has a promising future. Thus, industrial ducts, vents and mufflers that form a major part of such systems, when augmented with the metamaterials can hopefully yield quieter machineries in times to come." @default.
- W2805229775 created "2018-06-13" @default.
- W2805229775 creator A5058035023 @default.
- W2805229775 date "2017-01-01" @default.
- W2805229775 modified "2023-09-27" @default.
- W2805229775 title "Modelling of low frequency muffler based on acoustic black hole effect" @default.
- W2805229775 cites W1825181009 @default.
- W2805229775 cites W1970148656 @default.
- W2805229775 cites W2010654716 @default.
- W2805229775 cites W2011600111 @default.
- W2805229775 cites W2017024654 @default.
- W2805229775 cites W2024318098 @default.
- W2805229775 cites W2031268927 @default.
- W2805229775 cites W2040618575 @default.
- W2805229775 cites W2050859022 @default.
- W2805229775 cites W2080270994 @default.
- W2805229775 cites W2088819359 @default.
- W2805229775 cites W2135048647 @default.
- W2805229775 cites W2212066906 @default.
- W2805229775 cites W2588557878 @default.
- W2805229775 cites W3106286753 @default.
- W2805229775 cites W772285259 @default.
- W2805229775 cites W1510654101 @default.
- W2805229775 cites W1516481538 @default.
- W2805229775 cites W1523604727 @default.
- W2805229775 cites W2210738873 @default.
- W2805229775 cites W2271436356 @default.
- W2805229775 cites W2292836400 @default.
- W2805229775 cites W313451184 @default.
- W2805229775 hasPublicationYear "2017" @default.
- W2805229775 type Work @default.
- W2805229775 sameAs 2805229775 @default.
- W2805229775 citedByCount "0" @default.
- W2805229775 crossrefType "dissertation" @default.
- W2805229775 hasAuthorship W2805229775A5058035023 @default.
- W2805229775 hasConcept C108811297 @default.
- W2805229775 hasConcept C119599485 @default.
- W2805229775 hasConcept C121332964 @default.
- W2805229775 hasConcept C125853085 @default.
- W2805229775 hasConcept C127413603 @default.
- W2805229775 hasConcept C135628077 @default.
- W2805229775 hasConcept C152781226 @default.
- W2805229775 hasConcept C17829176 @default.
- W2805229775 hasConcept C198394728 @default.
- W2805229775 hasConcept C203718221 @default.
- W2805229775 hasConcept C24890656 @default.
- W2805229775 hasConcept C2779753020 @default.
- W2805229775 hasConcept C2780273575 @default.
- W2805229775 hasConcept C57879066 @default.
- W2805229775 hasConcept C60015446 @default.
- W2805229775 hasConcept C66938386 @default.
- W2805229775 hasConcept C67514181 @default.
- W2805229775 hasConceptScore W2805229775C108811297 @default.
- W2805229775 hasConceptScore W2805229775C119599485 @default.
- W2805229775 hasConceptScore W2805229775C121332964 @default.
- W2805229775 hasConceptScore W2805229775C125853085 @default.
- W2805229775 hasConceptScore W2805229775C127413603 @default.
- W2805229775 hasConceptScore W2805229775C135628077 @default.
- W2805229775 hasConceptScore W2805229775C152781226 @default.
- W2805229775 hasConceptScore W2805229775C17829176 @default.
- W2805229775 hasConceptScore W2805229775C198394728 @default.
- W2805229775 hasConceptScore W2805229775C203718221 @default.
- W2805229775 hasConceptScore W2805229775C24890656 @default.
- W2805229775 hasConceptScore W2805229775C2779753020 @default.
- W2805229775 hasConceptScore W2805229775C2780273575 @default.
- W2805229775 hasConceptScore W2805229775C57879066 @default.
- W2805229775 hasConceptScore W2805229775C60015446 @default.
- W2805229775 hasConceptScore W2805229775C66938386 @default.
- W2805229775 hasConceptScore W2805229775C67514181 @default.
- W2805229775 hasLocation W28052297751 @default.
- W2805229775 hasOpenAccess W2805229775 @default.
- W2805229775 hasPrimaryLocation W28052297751 @default.
- W2805229775 hasRelatedWork W1992246017 @default.
- W2805229775 hasRelatedWork W2013145013 @default.
- W2805229775 hasRelatedWork W2017149393 @default.
- W2805229775 hasRelatedWork W2045147770 @default.
- W2805229775 hasRelatedWork W2048503311 @default.
- W2805229775 hasRelatedWork W2056944673 @default.
- W2805229775 hasRelatedWork W2144092886 @default.
- W2805229775 hasRelatedWork W2235709259 @default.
- W2805229775 hasRelatedWork W2280222373 @default.
- W2805229775 hasRelatedWork W2324671111 @default.
- W2805229775 hasRelatedWork W2344155473 @default.
- W2805229775 hasRelatedWork W2549839763 @default.
- W2805229775 hasRelatedWork W2735710192 @default.
- W2805229775 hasRelatedWork W2921967198 @default.
- W2805229775 hasRelatedWork W2963091950 @default.
- W2805229775 hasRelatedWork W3000170141 @default.
- W2805229775 hasRelatedWork W3027282785 @default.
- W2805229775 hasRelatedWork W3200263397 @default.
- W2805229775 hasRelatedWork W577161591 @default.
- W2805229775 hasRelatedWork W2552096104 @default.
- W2805229775 isParatext "false" @default.
- W2805229775 isRetracted "false" @default.
- W2805229775 magId "2805229775" @default.
- W2805229775 workType "dissertation" @default.