Zobrazeno 1 - 10
of 95
pro vyhledávání: '"A. S. Morgans"'
Autor:
Renaud Gaudron, Aimee S. Morgans
Publikováno v:
Data-Centric Engineering, Vol 3 (2022)
Predicting the occurrence of thermoacoustic instabilities is of major interest in a variety of engineering applications such as aircraft propulsion, power generation, and industrial heating. Predictive methodologies based on a physical approach have
Externí odkaz:
https://doaj.org/article/5310f3d7e4fd489d906ba7e06e7abf5a
Autor:
Renaud Gaudron, Aimee S. Morgans
Publikováno v:
INTER-NOISE and NOISE-CON Congress and Conference Proceedings. 265:582-591
Thermoacoustic instabilities are an undesirable physical phenomenon that can occur in a wide range of combustors such as gas turbines, rocket engines, and boilers. These instabilities are typically loud, vibration-inducing, and can increase parietal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ea05eb06e3df261498332b03915cbdd
https://doi.org/10.3397/in_2022_0079
https://doi.org/10.3397/in_2022_0079
Autor:
Philipp Brokof, Juan Guzmán-Iñigo, Aimee S. Morgans, Min Son, Wolfgang Armbruster, Justin S. Hardi
Injection coupling is a well-known cause of high-frequency combustion instability in hydrogen/liquid oxygen ([Formula: see text]) rocket engines. This type of instability is commonly explained by the two-way coupling between the dynamics of the combu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c9d2df2cf8ba021c0a8de9061259fbb
http://hdl.handle.net/10044/1/104990
http://hdl.handle.net/10044/1/104990
Autor:
D. Ahmed, A. S. Morgans
Publikováno v:
Physical Review Fluids. 7
The turbulent wake behind a square-back Ahmed body in close proximity to the ground exhibits bimodal switching. This manifests as the center of the wake switching between one of two asymmetric positions, either horizontally or vertically. Switches oc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e3b07edc283962c33621170f8ae90ea
https://doi.org/10.1103/physrevfluids.7.084401
https://doi.org/10.1103/physrevfluids.7.084401
Autor:
Xiao Hu, Aimee S. Morgans
Publikováno v:
Journal of Fluid Mechanics. 944
The unsteady wind loading on high-rise buildings has the potential to influence strongly their structural performance in terms of serviceability, habitability and occupant comfort. This paper investigates numerically the flow structures around a cano
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df9dd2edf25e958f468fb030cfddc5e6
https://doi.org/10.1017/jfm.2022.467
https://doi.org/10.1017/jfm.2022.467
Publikováno v:
The Journal of the Acoustical Society of America. 151(2)
The generic problem of low-frequency acoustic radiation through quiescent air from a circular pipe that is inclined with respect to its exit flange is studied in this work. The exit flange is taken to extend as an infinite plane away from the pipe op
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cca287746ae71e30be4b2a0249d633d8
https://pubmed.ncbi.nlm.nih.gov/35232074
https://pubmed.ncbi.nlm.nih.gov/35232074
Publikováno v:
International Journal of Aeroacoustics
For a single-component perfect gas, entropy perturbations are associated with the difference between the overall density fluctuation and that coming from the acoustic perturbation. Entropy perturbations can generate sound when accelerated/decelerated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbaf2d0fccea2a4470c4db8afbaea777
In this work, we investigate both numerically and theoretically the sound generated by entropy waves passing through sudden area expansions. The numerical approach is based on a triple decomposition of the flow variables into a steady mean, a small-a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfa47055941d24780a9ed902bc17633d
http://arxiv.org/abs/2111.13043
http://arxiv.org/abs/2111.13043
Publikováno v:
Journal of Fluid Mechanics
This article presents a modelling approach to predict the low-frequency sound generated by entropy fluctuations interacting with isolated aerofoils. A model of the acoustic field is obtained based on a linearisation of the compressible Euler equation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5038fa4a7f50359827b3054c6e704aa7
https://doi.org/10.1017/jfm.2021.569
https://doi.org/10.1017/jfm.2021.569
Publikováno v:
Journal of Sound and Vibration. 456:137-161
Thermoacoustic instabilities in annular gas turbine combustors often involve modes which vary in both the longitudinal and circumferential directions. Recent experimental studies show that during limit cycle oscillations, different thermoacoustic mod
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1d89f509bc8426a11b2cda68224bd78
https://doi.org/10.1016/j.jsv.2019.04.025
https://doi.org/10.1016/j.jsv.2019.04.025