Numerical studies are being conducted related to the propagation of nonlinear waves in randomly inhomogeneous media. In particular, the sonic boom wave from a supersonic aircraft after passing through the atmospheric turbulent layer near the ground acquires a random character and its characteristics must be described statistically. Modeling based on the KZK equation for large random realizations of the acoustic field makes it possible to predict the statistical characteristics of the noise level.
LIMU tasks
- propagation of pulsed signals in nonlinear media with regular and random inhomogeneities
- reflection of nonlinear waves containing shocks from rigid boundaries
- nonlinear methods for calibration of broadband microphones
Activity types
- numerical modeling
Contacts
[1] Irregular reflection of spark-generated shock pulses from a rigid surface: Mach-Zehnder interferometry measurements in air / M. M. Karzova, T. Lechat, S. Ollivier et al. // Journal of the Acoustical Society of America. — 2019. — Vol. 145, no. 1. — P. 26–35. DOI: 10.1121/1.5084266
[2] Effect of surface roughness on nonlinear reflection of weak shock waves / M. Karzova, T. Lechat, S. Ollivier et al. // Journal of the Acoustical Society of America. — 2019. — Vol. 146, no. 5. — P. EL438–EL443. DOI: 10.1121/1.5133737
[3] Characterization of spark-generated N-waves in air using an optical Schlieren method / M. M. Karzova, P. V. Yuldashev, V. A. Khokhlova et al. // Journal of the Acoustical Society of America. — 2015. — Vol. 137, no. 6. — P. 3244–3252. DOI: 10.1121/1.4921026
[4] Mach stem formation in reflection and focusing of weak shock acoustic pulses / M. M. Karzova, V. A. Khokhlova, E. Salze et al. // Journal of the Acoustical Society of America. — 2015. — Vol. 137, no. EL436. — P. 436–442. DOI: 10.1121/1.4921681
[5] Mach-Zehnder interferometry method for acoustic shock wave measurements in air and broadband calibration of microphones / P. Yuldashev, M. Karzova, V. Khokhlova et al. // Journal of the Acoustical Society of America. — 2015. — Vol. 137, no. 6. — P. 3314–3324. DOI: 10.1121/1.4921549
[6] Application of a mach–zehnder interferometer to the observation of mach stem formation when a shock wave is reflected from a rigid surface / M. M. Karzova, P. V. Yuldashev, V. A. Khokhlova et al. // Bulletin of the Russian Academy of Sciences: Physics. — 2015. — Vol. 79, no. 10. — P. 1293–1295. DOI: 10.3103/S1062873815100123
[7] Nonlinear propagation of spark-generated N-waves in air: Modeling and measurements using acoustical and optical methods / P. Yuldashev, S. Ollivier, M. Averiyanov et al. // Journal of the Acoustical Society of America. — 2010. — Vol. 128, no. 6. — P. 3321–3333. DOI: 10.1121/1.3505106
[8] Kinetic approach to the description of one-dimensional acoustic turbulence / Rudenko O. V., Khokhlova V. A. // Soviet Physics Acoustics-Ussr. — 1988. — Vol. 34, no. 3. — P. 289–293.
[9] Kinetics of one-dimensional sawtooth waves / Rudenko O. V., Khokhlova V. A. // Soviet Physics Acoustics-Ussr. — 1991. — Vol. 37, no. 1. — P. 90–93.