Fluid-Structure-Sound Interactions and Control

Fluid-Structure-Sound Interactions and Control
Author: Yu Zhou
Publisher: Springer
Total Pages: 382
Release: 2018-05-15
Genre: Technology & Engineering
ISBN: 9811075425

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This book presents the proceedings of the Symposium on Fluid-Structure-Sound Interactions and Control (FSSIC), (held in Tokyo on Aug. 21-24, 2017), which largely focused on advances in the theory, experiments on, and numerical simulation of turbulence in the contexts of flow-induced vibration, noise and their control. This includes several practical areas of application, such as the aerodynamics of road and space vehicles, marine and civil engineering, nuclear reactors and biomedical science, etc. Uniquely, these proceedings integrate acoustics with the study of flow-induced vibration, which is not a common practice but can be extremely beneficial to understanding, simulating and controlling vibration. The symposium provides a vital forum where academics, scientists and engineers working in all related branches can exchange and share their latest findings, ideas and innovations – bringing together researchers from both east and west to chart the frontiers of FSSIC.

Advances in Aerospace Technologies

Advances in Aerospace Technologies
Author: Devabrata Sahoo
Publisher: CRC Press
Total Pages: 263
Release: 2024-10-23
Genre: Technology & Engineering
ISBN: 8770046387

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This book features the recent technological advances made in the broad domain of aerospace engineering. Aerospace engineering covers a wide range of areas on which research is being done, including subsonic aerodynamics, high speed aerodynamics, unsteady aerodynamics, wind tunnel testing, computational fluid dynamics, and more. The authors also review recent technological advancements done in aerospace engineering and provide information about all the important domains and problems of interest in the field. The various important problem areas covered within the book include satellites, supersonic/hypersonic inlets, advanced composite structures, spiked bodies, delta wings, green propellant, satellite designing, satellite trajectory control, industry 4.0 in aerospace etc. In addition, the advancements done in the areas of introducing artificial intelligence in to the aerospace domain is also covered.

The Aeronautical Journal

The Aeronautical Journal
Author:
Publisher:
Total Pages: 700
Release: 2005
Genre: Aeronautics
ISBN:

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A Comprehensive Study of Vortex Breakdown Flow Mechanisms: Computational Investigation and Preliminary Control

A Comprehensive Study of Vortex Breakdown Flow Mechanisms: Computational Investigation and Preliminary Control
Author:
Publisher:
Total Pages: 170
Release: 2004
Genre:
ISBN:

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A modified vortex filament method is used to simulate the evolution of the transient formation of vortex breakdown. The method supports previous studies, illustrating that vortex breakdown. The method supports previous studies, illustrating that vortex breakdown is initiated by a negative vorticity gradient which triggers an inviscid self-induction feedback mechanism and when subsequently subjected to viscous effects, results in steady state vortex breakdown. The results of the method are first validated experimentally with numerous past dye flow visualization and particle image velocimetry investigations, and then used to qualitatively investigate the self-induction flow mechanisms during the formative stages of stages of transient breakdown. As a complement to the qualitative investigation, a quantitative analysis is performed, which yields a local and dynamical relationship relating the azimuthal vorticity gradient at a particular location to the curvature of the instantaneous streamline, projected onto the meridional plane, at the same location. This relationship further shows that once radial expansion commences in the region of negative azimuthal vorticity, it continues to expand such that the meridional streamline becomes more curved with time, supporting that the negative vorticity gradient not only initiates the radial expansion, but also, feeds its subsequent growth. On the contrary, in the region of a positive gradient, the streamline continues to flatten fostering radial contraction of the vortex tube, which provides a closure to expansion. In attempt to suppress breakdown in two preliminary control simulations, this positive azimuthal vorticity gradient is then introduced to the vortex flow just prior to breakdown. Results from these control simulations illustrated a temporal and spatial delay in breakdown as well as exhibiting flow behavior associated with complete elimination of breakdown.

Aerospace America

Aerospace America
Author:
Publisher:
Total Pages: 646
Release: 1999
Genre: Aeronautics
ISBN:

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