標題: Titlebook: Aero- and Hydro-Acoustics; IUTAM Symposium, Eco Geneviève Comte-Bellot,John E. Ffowcs Williams Conference proceedings 1986 Springer-Verlag [打印本頁] 作者: 阿諛奉承 時間: 2025-3-21 19:30
書目名稱Aero- and Hydro-Acoustics影響因子(影響力)
書目名稱Aero- and Hydro-Acoustics影響因子(影響力)學科排名
書目名稱Aero- and Hydro-Acoustics網絡公開度
書目名稱Aero- and Hydro-Acoustics網絡公開度學科排名
書目名稱Aero- and Hydro-Acoustics被引頻次
書目名稱Aero- and Hydro-Acoustics被引頻次學科排名
書目名稱Aero- and Hydro-Acoustics年度引用
書目名稱Aero- and Hydro-Acoustics年度引用學科排名
書目名稱Aero- and Hydro-Acoustics讀者反饋
書目名稱Aero- and Hydro-Acoustics讀者反饋學科排名
作者: 兇殘 時間: 2025-3-21 23:54 作者: blackout 時間: 2025-3-22 03:47 作者: Infelicity 時間: 2025-3-22 06:48
An Experimental Study of the Influence of Mean Flow on Acoustic Dissipation by Vorticity Production r confines itself to the first - namely the interaction of separated mean flow at a trailing edge with the reciprocating potential flow generated by two upstream sound sources with a controlled phase relationship.作者: Rebate 時間: 2025-3-22 10:34
Cluster and Group Synchrony: The Theoryterm. For that reason, the objective of this paper is to indicate the fundamental limitations of Active Noise Control-those of acoustic principle and of controllability — as well as the areas where major advances in technology will be needed to overcome current problems.作者: annexation 時間: 2025-3-22 13:45 作者: chronology 時間: 2025-3-22 18:54
Active Noise Controlterm. For that reason, the objective of this paper is to indicate the fundamental limitations of Active Noise Control-those of acoustic principle and of controllability — as well as the areas where major advances in technology will be needed to overcome current problems.作者: IOTA 時間: 2025-3-23 01:05 作者: Ingest 時間: 2025-3-23 01:45
The Surplus and Class Structure here the mean loading effects scale on the airfoil total lift. Calculations are presented which illustrate that, at high frequencies, moderate levels of airfoil steady loading can dramatically increase the noise produced by airfoil convected gust interactions.作者: forbid 時間: 2025-3-23 06:53 作者: indecipherable 時間: 2025-3-23 11:40
https://doi.org/10.1007/978-1-349-09231-4 the remaining two cases, a vortex ring passes by a sharp edge of a flat plate, its width being comparable with the vortex size for the one case and semi-infini te for the other. This work presents a basis of comparison between the observations and the theoretical predictions.作者: MUTED 時間: 2025-3-23 14:52 作者: browbeat 時間: 2025-3-23 20:26 作者: Malcontent 時間: 2025-3-24 02:16 作者: 宇宙你 時間: 2025-3-24 05:28 作者: anarchist 時間: 2025-3-24 09:46 作者: 敵意 時間: 2025-3-24 13:12 作者: 同謀 時間: 2025-3-24 15:29 作者: set598 時間: 2025-3-24 20:45
Acoustic Waves Emitted by Vortex-Body Interactionthe vortex-body system. In the first case, a vortex ring passes near by a circular cylinder whose axis is set at right angles to the vortex motion. In the remaining two cases, a vortex ring passes by a sharp edge of a flat plate, its width being comparable with the vortex size for the one case and s作者: Dignant 時間: 2025-3-24 23:19
Non-Steady Flow Over a Trailing Edge — An Experimental Studyfield is obtained as close as 0.2 mm away from the wall and we are able to resolve the Stokes layer of the incoming flow. The perturbation of the shear-layer is discussed and the vorticity in the downstream region is evaluated from the velocity field. Additionally the displacement of the separation 作者: RADE 時間: 2025-3-25 07:11 作者: 行為 時間: 2025-3-25 10:45 作者: sclera 時間: 2025-3-25 14:01 作者: 輕快走過 時間: 2025-3-25 16:46
Acoustic Pressure and Intensity Distributions in Finite Length Active Noise Control Systemsontours and maps of intensity vectors yields results which are in good accord with experimental findings. It appears that a reduction in the level of reflections in cancelling source location is acheived when a lining covers one wall in the duct. Suitable adjustment of the internal source impedances作者: inclusive 時間: 2025-3-25 21:53
The Active Minimization of Harmonic Enclosed Sound Fieldsomplex strengths of a number of “secondary sources” of sound introduced into the enclosure. For a given number and location of secondary sources, there is a unique set of complex source strengths which minimises this potential energy. This analysis is applied to the case of a lightly damped enclosur作者: 針葉 時間: 2025-3-26 00:44
Sound Generation in the Ocean Under a Turbulent Airflowor various features in the problem of sound generation in the ocean. Some particular situations are examined in detail. It is shown that, whenever the ocean surface is non-linearly deformed, any quadrupole radiations become negligible; the most significant sound arises from surface motions. This sur作者: 啟發(fā) 時間: 2025-3-26 05:25 作者: 猜忌 時間: 2025-3-26 09:27 作者: 傲慢人 時間: 2025-3-26 15:23 作者: NICE 時間: 2025-3-26 17:59
The Political Economy of the USSRlicit and exact analytical solution for a diffraction problem in linear wave theory, relating to a plane wave incident upon a thin opaque semi-infinite screen with a straight edge; afterwards, Macdonald, Herglotz and others derived the corresponding solution for a point source and a wedge formed by 作者: 牽連 時間: 2025-3-26 22:14
Der koordinationsorientierte Ansatzood agreement with meassurements. The theory is also applied to examine the sound generation mechanism advocated by Brekhovskikh. It is shown that, theoretically, the sound calculated according to Brekhovskikh’s theory overwhelms the aerial turbulence radiation when the gravity surface waves have wa作者: 不自然 時間: 2025-3-27 03:51
https://doi.org/10.1007/978-3-322-97814-1 impulsive blade-vortex interaction loading (including transonic effects), and broadband noise due to loading from inflow turbulence and self generated turbulence. The state- of-the-art of predicting noise from practical configurations is assessed.作者: Delirium 時間: 2025-3-27 07:42 作者: EXUDE 時間: 2025-3-27 10:24 作者: 威脅你 時間: 2025-3-27 16:41
Diffraction and Radiationlicit and exact analytical solution for a diffraction problem in linear wave theory, relating to a plane wave incident upon a thin opaque semi-infinite screen with a straight edge; afterwards, Macdonald, Herglotz and others derived the corresponding solution for a point source and a wedge formed by 作者: 名次后綴 時間: 2025-3-27 19:09 作者: 預防注射 時間: 2025-3-28 00:27
Noise of High Speed Surfaces impulsive blade-vortex interaction loading (including transonic effects), and broadband noise due to loading from inflow turbulence and self generated turbulence. The state- of-the-art of predicting noise from practical configurations is assessed.作者: eardrum 時間: 2025-3-28 04:02 作者: gospel 時間: 2025-3-28 10:09
Modelling of Trailing Edge Flow Tones in Elastic Structuresel development involve the use of measured nonlinear “wake impedances” by the forced motion of trailing edges, the development of a mathematical model for the response of blade structures that are coupled to the wake dynamics, and finally the testing of the modeling against measured flow-induced vib作者: BARB 時間: 2025-3-28 14:12 作者: incision 時間: 2025-3-28 16:10
Der koordinationsorientierte AnsatzA theory of acoustic radiation from large-scale vortex disturbances in axisymmetric shear flow at low Mach number is proposed.作者: 偏離 時間: 2025-3-28 22:04
Source Identification Techniques — A Critical EvaluationExperimental methods aimed at source identification continue to evolve. In the last decade, computers, programmable or dedicated, have provided the experimenter with unprecedented data processing capabilities. Highlights of several techniques are presented along with comments regarding limitations and characteristic results.作者: 注意力集中 時間: 2025-3-29 02:03 作者: 是比賽 時間: 2025-3-29 06:14
The Political Economy of the USSRource < e.g., the shadow of an object interposed in a beam of light >; and is manifest by a non-zero level of excitation in such regions. This, and the kindred phenomena of reflection and refraction, is explicable by means of superposed wave functions that are separately linked with the primary or g作者: 暫時過來 時間: 2025-3-29 07:22
The Surplus and Class StructureThe analysis is based on Rapid Distortion Theory. High frequency gusts, whose wavelengths are short compared to the airfoil chord, are considered. The noise generation is shown to be concentrated near the airfoil leading edge. The level of the generated noise is increased by airfoil mean loading, wi作者: 晚來的提名 時間: 2025-3-29 11:52 作者: PSA-velocity 時間: 2025-3-29 18:20
Adaptive Time-Delayed Feedback Controlfield is obtained as close as 0.2 mm away from the wall and we are able to resolve the Stokes layer of the incoming flow. The perturbation of the shear-layer is discussed and the vorticity in the downstream region is evaluated from the velocity field. Additionally the displacement of the separation 作者: 有毛就脫毛 時間: 2025-3-29 21:56
Synchronization in Complex Networksduces unsteady vortex shedding at the edge and the vorticity is convected away into regions where it is unable to interact significantly with the sound, and where its energy is ultimately dissipated as heat. The U.K. Science and Engineering Research Council is supporting an experimental study at Sou作者: 施舍 時間: 2025-3-30 03:31
Cluster and Group Synchrony: The Theorye concept does not necessarily violate the Laws of Physics, the topic has suddenly become accepted and respectable. Indeed, the possibility now arises of its being regarded as a universal panacea for all noise control problems, with equally dangerous effects on its rational development for the long 作者: Bombast 時間: 2025-3-30 04:21
Eckhard Frischbier,Holger Pfeifferperformance introduced by some of the features that are likely to be inherent in real systems. These include the limitations on the control system caused by finite computational power and the need for the controller to be causal. We also consider the effect of noise corruption of the sensor signal a作者: Allergic 時間: 2025-3-30 10:21 作者: 后退 時間: 2025-3-30 14:36 作者: 薄膜 時間: 2025-3-30 19:00
Der koordinationsorientierte Ansatzor various features in the problem of sound generation in the ocean. Some particular situations are examined in detail. It is shown that, whenever the ocean surface is non-linearly deformed, any quadrupole radiations become negligible; the most significant sound arises from surface motions. This sur作者: Gobble 時間: 2025-3-30 21:30
https://doi.org/10.1007/978-3-322-97814-1ct to the fluid (e.g., loudspeakers), or 3) by surfaces moving with respect to the fluid. This paper discusses the last case. The noise radiated can be either due to the motion of the volume of the body directly, due to the steady or unsteady forces on its surfaces from their motion relative to the 作者: MULTI 時間: 2025-3-31 01:31
https://doi.org/10.1007/978-3-322-97814-1op engines. If this proves to be the case, public acceptance and thus the ultimate success of the ATP will depend on the degree to which the passenger cabin can be isolated from propeller noise. This raises the possibility that much of the gain in fuel efficiency anticipated for the ATP-powered tran作者: PAGAN 時間: 2025-3-31 06:19
https://doi.org/10.1007/978-3-642-48209-0ntense audible tones and shortened fatigue life. Historically, most researches on such turbo-blade “singing” have focussed on the prediction of the vortex shedding frequency and on the reduction of offending vibration levels by reshaping the trailing edges. The associated control measures effectivel作者: COMMA 時間: 2025-3-31 11:38
