Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Flow-induced noise"”.
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Flow -Induced Noise in Heat Exchangers
"Measurements of the flow-induced noise produced by plate heat exchangers, arrays of cylinders, cylinders in tandem, side by side cylinders, single cylinders of constant diameter and ""hourglass"" shaped cylinders inside a rectangular duct have been made. The acoustic field in parts of the duct in …
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Investigation of refrigerant flow-induced noise characteristics and mitigation approaches
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-12-01
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Flow Induced Noise from Turbulent Flow over Steps and Gaps
… existence of small surface discontinuities on a flow surface generate significant pressure fluctuations which can manifest as radiated far field sound and affect the fluctuating near wall pressure field exerted on the flow surface. A significant amount of research has been performed on various …
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Reducing mechanical and flow-induced noise in the surface suspended acoustic receiver
… of the SSAR exhibited very poor signal-to-noise ratios in the frequency band of the hydrophones. This thesis details efforts to reduce the hydrophone noise level by combining the analysis of experimental data with the results from numerical models. Experiments were conducted to quantify …
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Computation and control of flow-induced noise behind a circular cylinder using an acoustic analogy approach
… have allowed the prediction of far-field noise through the use of Computational Fluid Dynamics (CFD) data as near-field sound sources. One of the most useful analytical methods, used for the computation of noise, is Lighthill's acoustic analogy. The latter will be used in the present …
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Quantification and analysis methods aimed at the reduction of flow induced noise in the expansion device
Embargo set by: Colleen Fallaw for item 102686 Lift date: 2019-08-10T21:25:30Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system
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A source-extraction based coupling method for computational aeroacoustics
… equations is derived by decomposing all flow variables into their dominant part and their fluctuating part, and neglecting some small-magnitude terms, and further simplified into a set of isentropic perturbation equations. Accompanying the derivation of the acoustic perturbation …
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Effect of self-excited acoustic perturbations on flow characteristics around rectangular cylinders with varied geometrical aspects
… crucial role of incidence angles in modulating flow structures, vortex generation, and wake dynamics. The combined effect of a small angle of incidence and self-excited acoustic resonance was found to have an added streamwise length effect. This research emphasizes the significant influence of …