𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Active control of cross mode waves in rectangular ducts

✍ Scribed by In-Soo Kim; Kwang-Joon Kim


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
451 KB
Volume
8
Category
Article
ISSN
0888-3270

No coin nor oath required. For personal study only.


πŸ“œ SIMILAR VOLUMES


A TRAVELLING WAVE APPROACH TO ACTIVE NOI
✍ J. Yuan; K.-Y. Fung πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 243 KB

This paper presents a new scheme for active noise control (ANC) in ducts. It uses three pressure sensors to measure and separate the far field wave into the incident wave from the primary noise source, the reflected wave from the duct outlet, and the anti-sound wave generated by the loudspeaker. The

THE CALCULATION OF ACTIVELY ABSORBING SI
✍ JAN J. KRÜGER πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 English βš– 551 KB

Active silencers can provide effective solutions especially for the control of low-frequency noise in ducts. To evaluate the performance of this technology in the early design stages it is necessary to predict the insertion loss and adjust the silencer sufficiently precisely to the specific requirem

PROPAGATION OF FINITE AMPLITUDE ACOUSTIC
✍ M.X Deng πŸ“‚ Article πŸ“… 1998 πŸ› Elsevier Science 🌐 English βš– 199 KB

Finite amplitude acoustic waves (FAAWs) that propagate in a two-dimensional rectangular duct of semi-infinite length as a result of periodic excitation are determined by using second-order perturbation, based on the partial wave analysis method. With second-harmonic boundary and initial conditions o

ACTIVE CONTROL OF MULTI-MODAL PROPAGATIO
✍ S. Laugesen πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 793 KB

The active control of tonal noise propagating in ducts at frequencies where many modes are able to propagate is considered. The final objective of the work reported is to cancel the prominent 450-500 Hz blade passing frequency of the rotary suction fans found in chimney stacks of power stations. Thr

EXPERIMENTAL STUDIES ON FLOW IN CONVERGE
✍ Chin-Chia Su; Ray-Hong Lin πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 211 KB πŸ‘ 2 views

This paper describes the experimental examination of the pressure drop and heat transfer of the flow in convergent and divergent ducts of rectangular cross section. The aspect ratio based on the dimensions of the large end of the duct was 0β€’1. It has been found that at a given convergent or divergen