title: Nonlinear frequency mixing in a resonant cavity: numerical simulations in a bubbly liquid.
abstract: The study of nonlinear frequency mixing for acoustic standing waves in a resonator cavity is presented. Two high frequencies are mixed in a highly nonlinear bubbly liquid filled cavity that is resonant at the difference frequency. The analysis is carried out through numerical experiments, and both linear and nonlinear regimes are compared. The results show highly efficient generation of the difference frequency at high excitation amplitude. The large acoustic nonlinearity of the bubbly liquid that is responsible for the strong difference-frequency resonance also induces significant enhancement of the parametric frequency mixing effect to generate second harmonic of the difference frequency.
authors: Universidad Rey Juan Carlos, Tulipán s/n, 28933 Móstoles, Madrid, Spain. Electronic address: christian.vanhille@urjc.es.
authors: Christian
authors: C
authors: Vanhille
authors: Consejo Superior de Investigaciones Científicas, Serrano 144, 28006 Madrid, Spain. Electronic address: ccampos@ia.cetef.csic.es.
authors: Cleofé
authors: C
authors: Campos-Pozuelo
authors: Los Alamos National Laboratory, MPA-11, Los Alamos, NM 87545, USA. Electronic address: sinha@lanl.gov.
authors: Dipen N
authors: DN
authors: Sinha
mesh_terms: D003198:Computer Simulation; D045423:Microbubbles; D017711:Nonlinear Dynamics; D013016:Sound; D014732:Vibration; D014872:Water Movements
keywords: Bubbly liquids; Nonlinear acoustics; Nonlinear frequency mixing; Numerical simulations; Standing waves