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 … WebAs shown in Fig. 2.32, acoustic resonances are classified into two types depending on the acoustic mode shape; Fig. 2.32(a) shows the form of the first type of excitation where the acoustic resonant modes are dominant in the direction perpendicular both to the gas flow and the tube axes. The second type is shown in Fig. 2.32(b).In this case, the acoustic …
Data assimilation and resolvent analysis of turbulent flow behind …
WebACOUSTIC-INDUCED VIBRATION AIV refers to structural vibration excited by intense acoustic pressure in a piping system with vapor flow. The acoustic pressure is usually created from pressure-reducing devices due to high pressure drops and mass flows of vapor services. These acoustic energies excite the pipe wall circumferentially due to WebOct 18, 2016 · The acoustic data assimilation (ADA), which melds instant observed data of different natures and various physical models, has recently been developed as a new … black and grey fireplace
Data assimilation of flow-acoustic resonance. - Abstract
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 … WebTo accurately predict the characteristics of the three-dimensional flow fields of rotors, the constants of the shear stress transport model were optimized via data assimilation (DA) using the ... WebJan 5, 2010 · Flow-Excited Acoustic Resonance in Industry. The excitation mechanism of acoustic resonances has long been recognized, but the industry continues to be plagued by its undesirable consequences; manifested in severe vibration and noise problems in a wide range of industrial applications. This paper focuses on the nature of the acoustic … black and grey fish