Data assimilation of flow-acoustic resonance
Webadshelp[at]cfa.harvard.edu The ADS is operated by the Smithsonian Astrophysical Observatory under NASA Cooperative Agreement NNX16AC86A WebApr 10, 2024 · Cold and dense water from the North Pacific Ocean that spills through the Luzon Strait, the only deep conduit between the South China Sea (SCS) and the Pacific Ocean, renews deep-water mass ...
Data assimilation of flow-acoustic resonance
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WebOct 13, 2024 · We model the resonance mechanism underpinning generation of A1 and A2 screech tones in an under-expanded supersonic jet. Starting from the resonance model recently proposed by Mancinelli et al. (Exp. Fluids, vol. 60, 2024, p. 22), where the upstream-travelling wave is a neutrally stable guided-jet mode, we here present a more … WebAug 18, 2024 · Abstract. This paper presents an experimental investigation of the vorticity shedding and the susceptibility of acoustic resonance excitation for a square tube array with an intermediate tube spacing (i.e., pitch-to-diameter ratio (P/D) of 1.73). The tube array could be rotated about an axis normal to the flow direction so that the effect of the flow …
WebFeb 11, 2024 · Abstract. The flow-excited acoustic resonance phenomenon, which is instigated by periodic flow perturbation, leads to the generation of acute sound pressure. In this work, we investigated the characteristics of the flow-excited acoustic resonance for circular finned cylinders with different fin heights. The fin height is expressed as a … WebFeb 22, 2024 · This study aims to detect the unsteady features of the turbulent flow behind a wall-proximity rib using resolvent analysis, based on the mean flow field determined using an adjoint-based data assimilation (ABDA) model.
WebJul 9, 2010 · Here we present further evidence derived from operating experience of full size steam generator and tubular heat exchanger tube banks of which 19 experienced acoustic vibration or acoustic resonance and 27 experienced no vibration or no acoustic resonance within the operating flow range. The present data show that the decisive … WebOct 1, 2024 · In this work, the flow-induced acoustic resonance in square closed side branches is investigated experimentally to clarify the resonance mechanism. Three …
WebFeb 22, 2024 · This study aims to detect the unsteady features of the turbulent flow behind a wall-proximity rib using resolvent analysis, based on the mean flow field determined …
WebJun 14, 2024 · The data-assimilated flow-acoustic resonant fields were then comprehensively validated in terms of their acoustic fields, time-averaged flow fields, and phase-dependent flow fields. The time-averaged flow fields were obtained from planar … A data assimilation (DA) strategy was developed for accurate prediction of the … A data assimilation (DA) strategy was developed for accurate prediction of the … massy la rochelle tgvWebDec 3, 2024 · Flow–acoustic resonance in a cavity covered by a perforated plate - Volume 884. ... This list is generated based on data provided by Crossref. Bilgili, Serdar Ugarte, Orlando and Akkerman, V’yacheslav 2024. Interplay of Kelvin–Helmholtz instability with acoustics in a viscous potential flow. Physics of Fluids, Vol. 32, Issue. 8, p. 084108. massy colombiaWebDec 15, 2024 · 1. Introduction. Flow-induced acoustic resonances in closed side branches are excited by an unstable separated shear flow, in which vortex-like structures form at the upstream edge of the branch and impinge at the downstream edge (Uchiyama and Morita, 2024).When the interaction and mutual enhancement between the unstable … datetime adddays negativeWebJun 1, 2024 · This website requires cookies, and the limited processing of your personal data in order to function. By using the site you are agreeing to this as outlined in our privacy notice and cookie policy. Abstract ... Data assimilation of flow-acoustic resonance. ... massy france to parisWebJun 1, 2024 · This website requires cookies, and the limited processing of your personal data in order to function. By using the site you are agreeing to this as outlined in our … datetime add one dayWebA data assimilation (DA) strategy was developed for accurate prediction of the flow-acoustic resonant fields within a channel-branch system. The challenges of numerical … massy opera societe generaleWebMar 21, 2024 · Abstract. We measured gas flows exiting large, un-thermostated, gas-filled, pressure vessels by tracking the time-dependent pressure P (t) and resonance frequency fN (t) of an acoustic mode N of the gas remaining in each vessel. This is a proof-of-principle demonstration of a gas-flow standard that uses P (t), fN (t), and literature values of ... massy finance carilend