scholarly journals Numerical Analysis of Acoustic Propagation inside Multiple Liquids

2018 ◽  
Author(s):  
Shervin Foroughi ◽  
Vahid Karamzadeh ◽  
Mohsen Habibi ◽  
Muthukumaran Packirisamy
Keyword(s):  
Numerical Analysis ◽  
Acoustic Propagation

Numerical Analysis of Long Range Acoustic Propagation Based on Wide Angle Parabolic Wave Equation

1997 ◽  
Vol 36 (Part 1, No. 5B) ◽  
pp. 3336-3339 ◽  
Author(s):  
Tetsuo Anada ◽  
Taro Fujii ◽  
Koji Morita ◽  
Takenobu Tsuchiya ◽  
Nobuyuki Endoh
Keyword(s):  
Wave Equation ◽  
Numerical Analysis ◽  
Long Range ◽  
Acoustic Propagation ◽  
Wide Angle

scholarly journals Régularisation de l'équation de Galbrun pour l'aéroacoustique en régime transitoire

2006 ◽  
Vol Volume 5, Special Issue TAM... ◽  
Author(s):  
Anne Sophie Bonnet-Bendhia ◽  
Kamel Berriri ◽  
Patrick Joly
Keyword(s):  
Numerical Analysis ◽  
Finite Elements ◽  
Variational Formulation ◽  
Acoustic Propagation ◽  
Well Posedness ◽  
Nous Proposons ◽  
Régime Transitoire ◽  
Nous Montrons ◽  
International Audience ◽  
Éléments Finis

International audience In this paper we are interested in the mathematical and numerical analysis of the timedependent Galbrun equation in a rigid duct. This equation modelizes the acoustic propagation in presence of flow. We prove the well-posedness of the problem for a subsonic uniform flow. Besides, we propose a regularized variational formulation of the problem suitable for an approximation by Lagrange finite elements. Dans ce papier, nous nous intéressons à l'analyse mathématique et à l'approximation numérique de l'équation de Galbrun en régime transitoire dans un conduit rigide. Cette équation modélise la propagation d'ondes acoustiques en présence d écoulement. Nous montrons pour un écoulement porteur uniforme subsonique que ce modèle a une solution unique. En outre, nous proposons une formulation variationnelle régularisée qui se prête à une approximation par éléments finis de Lagrange.

Design of Longitudinal-Torsional Vibration Stepped Horn with Multiple Diagonal Slits

2013 ◽  
Vol 312 ◽  
pp. 51-54 ◽  
Author(s):  
Chuan Shao Liu ◽  
Hao Qiong Wu ◽  
Ao Mei Luo
Keyword(s):  
Numerical Analysis ◽  
Resonant Frequency ◽  
Torsional Vibration ◽  
Longitudinal Vibration ◽  
Structural Parameters ◽  
Acoustic Propagation ◽  
Ultrasonic Machining ◽  
Acoustic System ◽  
Analysis Method ◽  
Numerical Analysis Method

Based on the theory of acoustic propagation, the realization mechanism of longitudinal-torsional vibration (LTV) by converter of cylinder with multiple diagonal slits (MDS) under single excitation was studied. The influences of composite stepped horns structural parameters on resonant frequency were studied by numerical analysis method, and the horn (resonant frequency about 20kHz) with LTV was designed. The results show that LTV could be realized under single excitation of longitudinal vibration when resonant frequency is 20498Hz, and the amplitude varied periodically. The results can be applied in the design of acoustic system in ultrasonic machining with LTV.

Numerical analysis of strain gradient effects in periodic media

2001 ◽  
Vol 11 (PR5) ◽  
pp. Pr5-153-Pr5-160 ◽  
Author(s):  
R. H.J. Peerlings ◽  
N. A. Fleck
Keyword(s):  
Numerical Analysis ◽  
Strain Gradient ◽  
Periodic Media ◽  
Strain Gradient Effects ◽  
Gradient Effects
Sign in / Sign up

Export Citation Format

Share Document