Vibration and Sound Energy Flow in Three‐Dimensional Boxlike Structures

1982 ◽  
Vol 72 (6) ◽  
pp. 2038-2038
Author(s):  
Gopal Prasad Mathur
Keyword(s):  
Energy Flow ◽  
Three Dimensional ◽  
Sound Energy

Acoustical Design Study on Application of Absorption Materials

2014 ◽  
Vol 711 ◽  
pp. 546-549
Author(s):  
Wei Lin ◽  
Wei Hwa Chiang
Keyword(s):  
Computer Simulation ◽  
Energy Distribution ◽  
Ray Tracing ◽  
Impulse Response ◽  
Background Noise ◽  
Three Dimensional ◽  
Design Phase ◽  
Design Study ◽  
Sound Energy ◽  
Reinforcement System

Taipei Top Church Auditorium is a hall primarily intended for praise and worship. A three dimensional ray tracing computer simulation was used to provide sound energy distribution on the audience area of the hall, realistic design have been performed. The volume of the hall is 24600m3, which is occupied for 2200 people and equipped the hall with acoustical curtains by modifying its acoustical characteristics. Objective measurements of impulse response are reported, and background noise control and noise isolation are also be considered in the design phase. Reinforcement system is conducted to meet all the activity for the acoustical environments.

The interaction of a vortex with a boundary layer

1994 ◽  
Vol 98 (978) ◽  
pp. 311-318
Author(s):  
C.P. Yeung ◽  
L.C. Squire
Keyword(s):  
Boundary Layer ◽  
Kinetic Energy ◽  
Turbulent Kinetic Energy ◽  
Energy Flow ◽  
Three Dimensional ◽  
Turbulent Energy ◽  
Test Surface ◽  
Vortex System ◽  
Single Vortex ◽  
Boundary Layer Interaction

SummaryThe three-dimensional vortex/boundary layer interaction of a type which may occur on a high-lift aerofoil has been studied. The experimental configuration simulates the trailing vortex system generated by two differentially-deflected slats which interact with an otherwise two-dimensional boundary layer developed on the wing surface under a nominal zero pressure gradient. The mean and turbulent flowfields are measured by a triple hot-wire system. The measurements show that the trailing vortex system includes the vortex sheets shed from the slats and the single vortex formed at the discontinuity between them. The single vortex moves sideways and interacts with the boundary layer as it develops downstream. During the interaction with the boundary layer, the low momentum, high turbulent-kinetic energy flow carrying negative longitudinal vorticity is entrained from the boundary layer and rolled into the vortex at the line of lateral convergence on the test surface. Likewise, at the line of lateral divergence, the high momentum, low turbulent kinetic energy flow carried by the vortex impinges on the boundary layer, suppressing the turbulent energy level and the growth of the boundary layer.

The Acoustic Wattmeter, an Instrument for Measuring Sound Energy Flow

1941 ◽  
Vol 12 (3) ◽  
pp. 473-473 ◽  
Author(s):  
C. W. Clapp ◽  
F. A. Firestone
Keyword(s):  
Energy Flow ◽  
Sound Energy

Estimation of vibrational energy flow by sound energy in a vibrating rectangular plate

1996 ◽  
Vol 100 (4) ◽  
pp. 2596-2596
Author(s):  
Noritoshi Nakagawa ◽  
Akihiko Higashi ◽  
Yasuhisa Sekiguchi
Keyword(s):  
Rectangular Plate ◽  
Energy Flow ◽  
Vibrational Energy ◽  
Sound Energy ◽  
Vibrational Energy Flow

scholarly journals A study of the impact noise of machines. 3rd report. Analysis of transient sound energy flow.

1988 ◽  
Vol 54 (500) ◽  
pp. 866-873
Author(s):  
Noritoshi NAKAGAWA ◽  
Takuzo IWATSUBO ◽  
Shinsuke SAHARA
Keyword(s):  
Energy Flow ◽  
Sound Energy ◽  
Impact Noise ◽  
Report Analysis ◽  
The Impact

scholarly journals Analysis of Energy Flow and Barrier Rib Height Effect using Ray-Optics Incorporated Three-dimensional PDP Cell

2001 ◽  
Vol 2 (4) ◽  
pp. 46-51
Author(s):  
Woo Joon Chung ◽  
Dong Cheol Jeong ◽  
Ki-Woon Whang ◽  
Jae-Hyeung Park ◽  
Byoungho Lee
Keyword(s):  
Energy Flow ◽  
Three Dimensional ◽  
Ray Optics ◽  
Barrier Rib

scholarly journals Analysis of Energy Flow and Barrier Rib Height Effect using Ray-Optics Incorporated Three-dimensional PDP Cell

2001 ◽  
Vol 2 (4) ◽  
pp. 46-51 ◽  
Author(s):  
Woo Joon Chung ◽  
Dong Cheol Jeong ◽  
Ki-Woon Whang ◽  
Jae-Hyeung Park ◽  
Byoungho Lee
Keyword(s):  
Energy Flow ◽  
Three Dimensional ◽  
Ray Optics ◽  
Barrier Rib

The Acoustic Wattmeter, an Instrument for Measuring Sound Energy Flow

1941 ◽  
Vol 13 (2) ◽  
pp. 124-136 ◽  
Author(s):  
C. W. Clapp ◽  
F. A. Firestone
Keyword(s):  
Energy Flow ◽  
Sound Energy
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