FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4220789913> ?p ?o ?g. }

• W4220789913 abstract "Triggering is the process by which a linearly stable thermoacoustic system can reach self-sustained oscillations. This nonlinear phenomenon is activated only for sufficiently large amplitudes of perturbations to the equilibrium state. In this work, using a nonlinear variational optimisation method coupled with energy bisection, we compute the minimal thresholds for triggering in the Rijke tube. In particular, extending previous works, we take into account the effect of the time delay by optimising not only the perturbations at initial time, but also the velocity at the hot-wire position in the time-delay interval. We found that, for sufficiently large time delays, the nonlinearity linked to the delayed flow velocity bears a strong potential for energy growth, leading to transient amplifications of the energy reaching ${O}(10^{2})$ , two orders of magnitude larger than those reported in previous studies. Notably, the gain increases with the time delay, but decreases with the initial energy of the perturbation, thus reaching very high values close to the triggering threshold of the system. The minimal energy for triggering self-sustained oscillations achieves energy values as low as ${O}(10^{-4})$ , two orders of magnitude smaller than previous estimates. This indicates that, for thermoacoustic systems characterised by a non-negligible time delay, taking into account the effect of the time-delayed variables, as well as the system nonlinearity, is crucial for correctly evaluating the triggering energy thresholds." @default.
• W4220789913 created "2022-04-03" @default.
• W4220789913 creator A5049000366 @default.
• W4220789913 creator A5076948679 @default.
• W4220789913 creator A5078698842 @default.
• W4220789913 date "2022-03-17" @default.
• W4220789913 modified "2023-09-25" @default.
• W4220789913 title "Minimal energy thresholds for triggering in the Rijke tube: the effect of the time delay" @default.
• W4220789913 cites W1532700010 @default.
• W4220789913 cites W1950364668 @default.
• W4220789913 cites W1963884095 @default.
• W4220789913 cites W1972105855 @default.
• W4220789913 cites W1974261652 @default.
• W4220789913 cites W1981804039 @default.
• W4220789913 cites W1993022491 @default.
• W4220789913 cites W2000113861 @default.
• W4220789913 cites W2000182453 @default.
• W4220789913 cites W2000681114 @default.
• W4220789913 cites W2007650274 @default.
• W4220789913 cites W2008609811 @default.
• W4220789913 cites W2017601956 @default.
• W4220789913 cites W2019293790 @default.
• W4220789913 cites W2020439647 @default.
• W4220789913 cites W2034111970 @default.
• W4220789913 cites W2036004700 @default.
• W4220789913 cites W2036231395 @default.
• W4220789913 cites W2038516800 @default.
• W4220789913 cites W2041161270 @default.
• W4220789913 cites W2052757131 @default.
• W4220789913 cites W2060932966 @default.
• W4220789913 cites W2067257172 @default.
• W4220789913 cites W2083530498 @default.
• W4220789913 cites W2086921976 @default.
• W4220789913 cites W2096838966 @default.
• W4220789913 cites W2099323065 @default.
• W4220789913 cites W2100861023 @default.
• W4220789913 cites W2103606462 @default.
• W4220789913 cites W2110995169 @default.
• W4220789913 cites W2111224752 @default.
• W4220789913 cites W2115226612 @default.
• W4220789913 cites W2119120098 @default.
• W4220789913 cites W2144144709 @default.
• W4220789913 cites W2147309190 @default.
• W4220789913 cites W2151460089 @default.
• W4220789913 cites W2153967537 @default.
• W4220789913 cites W2161423147 @default.
• W4220789913 cites W2169032844 @default.
• W4220789913 cites W2241857665 @default.
• W4220789913 cites W2425179700 @default.
• W4220789913 cites W2506291203 @default.
• W4220789913 cites W2521389993 @default.
• W4220789913 cites W2604209360 @default.
• W4220789913 cites W2617607706 @default.
• W4220789913 cites W2972033229 @default.
• W4220789913 cites W3036940324 @default.
• W4220789913 cites W3100504850 @default.
• W4220789913 cites W3169202980 @default.
• W4220789913 cites W4250883246 @default.
• W4220789913 cites W4254613374 @default.
• W4220789913 doi "https://doi.org/10.1017/jfm.2022.149" @default.
• W4220789913 hasPublicationYear "2022" @default.
• W4220789913 type Work @default.
• W4220789913 citedByCount "1" @default.
• W4220789913 countsByYear W42207899132023 @default.
• W4220789913 crossrefType "journal-article" @default.
• W4220789913 hasAuthorship W4220789913A5049000366 @default.
• W4220789913 hasAuthorship W4220789913A5076948679 @default.
• W4220789913 hasAuthorship W4220789913A5078698842 @default.
• W4220789913 hasConcept C10138342 @default.
• W4220789913 hasConcept C121332964 @default.
• W4220789913 hasConcept C154945302 @default.
• W4220789913 hasConcept C158622935 @default.
• W4220789913 hasConcept C162324750 @default.
• W4220789913 hasConcept C177918212 @default.
• W4220789913 hasConcept C180205008 @default.
• W4220789913 hasConcept C186370098 @default.
• W4220789913 hasConcept C18762648 @default.
• W4220789913 hasConcept C198082294 @default.
• W4220789913 hasConcept C2775924081 @default.
• W4220789913 hasConcept C2778439541 @default.
• W4220789913 hasConcept C41008148 @default.
• W4220789913 hasConcept C47446073 @default.
• W4220789913 hasConcept C54355233 @default.
• W4220789913 hasConcept C57879066 @default.
• W4220789913 hasConcept C62520636 @default.
• W4220789913 hasConcept C86803240 @default.
• W4220789913 hasConceptScore W4220789913C10138342 @default.
• W4220789913 hasConceptScore W4220789913C121332964 @default.
• W4220789913 hasConceptScore W4220789913C154945302 @default.
• W4220789913 hasConceptScore W4220789913C158622935 @default.
• W4220789913 hasConceptScore W4220789913C162324750 @default.
• W4220789913 hasConceptScore W4220789913C177918212 @default.
• W4220789913 hasConceptScore W4220789913C180205008 @default.
• W4220789913 hasConceptScore W4220789913C186370098 @default.
• W4220789913 hasConceptScore W4220789913C18762648 @default.
• W4220789913 hasConceptScore W4220789913C198082294 @default.
• W4220789913 hasConceptScore W4220789913C2775924081 @default.
• W4220789913 hasConceptScore W4220789913C2778439541 @default.
• W4220789913 hasConceptScore W4220789913C41008148 @default.
• W4220789913 hasConceptScore W4220789913C47446073 @default.

• next