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Hace 4 días · The present paper is a follow up of a previous study on the effect of streaky-generating cylindrical tabs located on the inner surface of a round nozzle on jet aeroacoustics (Amaral et al., AIAA AVIATION 2023 Forum, p. 4516, 2023). The aim is to identify coherent structures through stereoscopic particle image velocimetry (stereo PIV) measurements obtained in cross-stream planes parallel to the ...
Hace 5 días · Plumes of smoke billow skywards as Ukraine’s defenders attempt to hold back the Russian advance Credit: Peter Jordan. Since then, missiles strikes and bombing raids have flattened many buildings ...
Hace 4 días · Historisch alles andere als korrekt, aber mit reichlich rabenschwarzem Humor betreibt Peter Jordan in »Marie Antoinette oder Kuchen für alle!« Geschichtsrevisionismus der unterhaltsamsten Art und lässt dabei gar nicht mal so versteckt zahlreiche Gegenwartsbezüge durchschimmern.
Hace 4 días · Wavepacket models are computed for perfectly-expanded twin jets by means of plane-marching parabolized stability equations (PM-PSE) and compared against coherent structures educed from high-speed Schlieren visualizations using SPOD. The eduction of coherent structures directly from Schlieren images in high-speed jets can be problematic, as the density gradient fluctuations recovered by the ...
Hace 4 días · AIAA 2024-3201. Upstream-travelling guided jet waves have been shown to be one of the key elements in many resonance processes underpinned in high-speed jets. Despite its importance, many of its characteristics, including how these waves are generated and how it can travel subsonically, have not been detailed in the literature.
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Hace 3 días · The webcam in St. Peter-Ording - Erlebnis-Promenade – local information and the latest Feratel live-cams in St. Peter-Ording - Erlebnis-Promenade show the current weather, and the conditions at that location.
