Localized structures and pattern formation in acoustic resonator containing viscous fluid

• Autores: Isabel Pérez Arjona, Víctor Espinosa Roselló, Víctor José Sánchez Morcillo, J. A. Martínez Mora
• Localización: Tecniacústica 2008: conferencias y comunicaciones de Acústica 2008. V Congreso Ibérico de Acústica y Tecniacustica 2008; 39.º Congreso Español de Acústica. Coímbra, Portugal. octubre, 2008, 2008
• Idioma: inglés
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• Resumen

  • We report on a new type of localized structure, an ultrasonic cavity soliton, supported by large aspect-ratio acoustic resonators containing viscous media. These states of the acoustic and thermal fields are robust structures, existing whenever a spatially uniform solution and a periodic pattern coexist. We derive the equations which describe the system including spatial effects. The spatio-temporal dynamics of the system is analyzed from the microscopic model, and the results are in good agreement with the numerical results, such as with previous experimental works.