FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2589156799> ?p ?o ?g. }

• W2589156799 endingPage "480" @default.
• W2589156799 startingPage "435" @default.
• W2589156799 abstract "The dynamics of small-amplitude perturbations, as well as the regime of fully developed nonlinear propagating waves, is investigated for pulsatile channel flows. The time-periodic base flows are known analytically and completely determined by the Reynolds number $Re$ (based on the mean flow rate), the Womersley number $Wo$ (a dimensionless expression of the frequency) and the flow-rate waveform. This paper considers pulsatile flows with a single oscillating component and hence only three non-dimensional control parameters are present. Linear stability characteristics are obtained both by Floquet analyses and by linearized direct numerical simulations. In particular, the long-term growth or decay rates and the intracyclic modulation amplitudes are systematically computed. At large frequencies (mainly $Wogeqslant 14$ ), increasing the amplitude of the oscillating component is found to have a stabilizing effect, while it is destabilizing at lower frequencies; strongest destabilization is found for $Wosimeq 7$ . Whether stable or unstable, perturbations may undergo large-amplitude intracyclic modulations; these intracyclic modulation amplitudes reach huge values at low pulsation frequencies. For linearly unstable configurations, the resulting saturated fully developed finite-amplitude solutions are computed by direct numerical simulations of the complete Navier–Stokes equations. Essentially two types of nonlinear dynamics have been identified: ‘cruising’ regimes for which nonlinearities are sustained throughout the entire pulsation cycle and which may be interpreted as modulated Tollmien–Schlichting waves, and ‘ballistic’ regimes that are propelled into a nonlinear phase before subsiding again to small amplitudes within every pulsation cycle. Cruising regimes are found to prevail for weak base-flow pulsation amplitudes, while ballistic regimes are selected at larger pulsation amplitudes; at larger pulsation frequencies, however, the ballistic regime may be bypassed due to the stabilizing effect of the base-flow pulsating component. By investigating extended regions of a multi-dimensional parameter space and considering both two-dimensional and three-dimensional perturbations, the linear and nonlinear dynamics are systematically explored and characterized." @default.
• W2589156799 created "2017-03-03" @default.
• W2589156799 creator A5039594516 @default.
• W2589156799 creator A5074241330 @default.
• W2589156799 date "2017-02-21" @default.
• W2589156799 modified "2023-10-16" @default.
• W2589156799 title "Linear and nonlinear dynamics of pulsatile channel flow" @default.
• W2589156799 cites W1968016957 @default.
• W2589156799 cites W1971175032 @default.
• W2589156799 cites W1979782602 @default.
• W2589156799 cites W1980296470 @default.
• W2589156799 cites W1986607790 @default.
• W2589156799 cites W1988854358 @default.
• W2589156799 cites W1989815111 @default.
• W2589156799 cites W1992686274 @default.
• W2589156799 cites W1992687507 @default.
• W2589156799 cites W1996938095 @default.
• W2589156799 cites W2002821933 @default.
• W2589156799 cites W2004328766 @default.
• W2589156799 cites W2007054262 @default.
• W2589156799 cites W2007759363 @default.
• W2589156799 cites W2009847214 @default.
• W2589156799 cites W2028965154 @default.
• W2589156799 cites W2034600979 @default.
• W2589156799 cites W2056558384 @default.
• W2589156799 cites W2058014080 @default.
• W2589156799 cites W2062016636 @default.
• W2589156799 cites W2067479032 @default.
• W2589156799 cites W2071115178 @default.
• W2589156799 cites W2077716317 @default.
• W2589156799 cites W2080515599 @default.
• W2589156799 cites W2097025985 @default.
• W2589156799 cites W2098607650 @default.
• W2589156799 cites W2103574066 @default.
• W2589156799 cites W2104102786 @default.
• W2589156799 cites W2111640952 @default.
• W2589156799 cites W2126023041 @default.
• W2589156799 cites W2130411680 @default.
• W2589156799 cites W2134688511 @default.
• W2589156799 cites W2135313034 @default.
• W2589156799 cites W2135852481 @default.
• W2589156799 cites W2142120035 @default.
• W2589156799 cites W2149920541 @default.
• W2589156799 cites W2151115468 @default.
• W2589156799 cites W2154443739 @default.
• W2589156799 cites W2159869034 @default.
• W2589156799 cites W2160014985 @default.
• W2589156799 cites W2161667832 @default.
• W2589156799 cites W2166394880 @default.
• W2589156799 cites W2253336600 @default.
• W2589156799 cites W2334624764 @default.
• W2589156799 cites W4206029394 @default.
• W2589156799 cites W576668418 @default.
• W2589156799 doi "https://doi.org/10.1017/jfm.2017.58" @default.
• W2589156799 hasPublicationYear "2017" @default.
• W2589156799 type Work @default.
• W2589156799 sameAs 2589156799 @default.
• W2589156799 citedByCount "20" @default.
• W2589156799 countsByYear W25891567992018 @default.
• W2589156799 countsByYear W25891567992020 @default.
• W2589156799 countsByYear W25891567992021 @default.
• W2589156799 countsByYear W25891567992022 @default.
• W2589156799 countsByYear W25891567992023 @default.
• W2589156799 crossrefType "journal-article" @default.
• W2589156799 hasAuthorship W2589156799A5039594516 @default.
• W2589156799 hasAuthorship W2589156799A5074241330 @default.
• W2589156799 hasBestOaLocation W25891567992 @default.
• W2589156799 hasConcept C120665830 @default.
• W2589156799 hasConcept C121332964 @default.
• W2589156799 hasConcept C158622935 @default.
• W2589156799 hasConcept C164705383 @default.
• W2589156799 hasConcept C180205008 @default.
• W2589156799 hasConcept C182748727 @default.
• W2589156799 hasConcept C196558001 @default.
• W2589156799 hasConcept C24872484 @default.
• W2589156799 hasConcept C38349280 @default.
• W2589156799 hasConcept C55649039 @default.
• W2589156799 hasConcept C57879066 @default.
• W2589156799 hasConcept C62520636 @default.
• W2589156799 hasConcept C71924100 @default.
• W2589156799 hasConcept C74650414 @default.
• W2589156799 hasConcept C79191276 @default.
• W2589156799 hasConceptScore W2589156799C120665830 @default.
• W2589156799 hasConceptScore W2589156799C121332964 @default.
• W2589156799 hasConceptScore W2589156799C158622935 @default.
• W2589156799 hasConceptScore W2589156799C164705383 @default.
• W2589156799 hasConceptScore W2589156799C180205008 @default.
• W2589156799 hasConceptScore W2589156799C182748727 @default.
• W2589156799 hasConceptScore W2589156799C196558001 @default.
• W2589156799 hasConceptScore W2589156799C24872484 @default.
• W2589156799 hasConceptScore W2589156799C38349280 @default.
• W2589156799 hasConceptScore W2589156799C55649039 @default.
• W2589156799 hasConceptScore W2589156799C57879066 @default.
• W2589156799 hasConceptScore W2589156799C62520636 @default.
• W2589156799 hasConceptScore W2589156799C71924100 @default.
• W2589156799 hasConceptScore W2589156799C74650414 @default.
• W2589156799 hasConceptScore W2589156799C79191276 @default.
• W2589156799 hasLocation W25891567991 @default.

• next