Российский фонд
фундаментальных
исследований

Физический факультет
МГУ им. М.В.Ломоносова
 

B

Badiey M.

 

Кацнельсон Б.Г., Переселков С.А., Badiey M., Lynch J., Siegmann W. «Пространственно-временная изменчивость звукового поля в океанических волноводах, вызванная внутренними волнами на шельфе. теория и эксперимент (SWARM'95)» Волновые процессы в неоднородных и нелинейных средах. Материалы семинаров научно-образовательного центра, с. 222-242 (2003)

Волновые процессы в неоднородных и нелинейных средах. Материалы семинаров научно-образовательного центра, с. 222-242 (2003) | Рубрики: 07.02 07.03

Bai Yuzhu

 

Chen Yong, Chen Xiaoqian, Huang Yiyong, Bai Yuzhu, Hu Dengpeng, Fei Shaoming «Study of thermoviscous dissipation on axisymmetric wave propagating in a shear pipeline flow confined by rigid wall. Part I. Theoretical formulation» Акустический журнал, 62, № 1, с. pp27-37 (2016)

Axisymmetric acoustic wave propagation in a shear pipeline flow confined by a rigid wall is studied in the two-part paper. The effects of viscous friction and thermal conduction on the acoustic wave propagating in the liquid and perfect gas are respectively analyzed under different configurations of acoustic frequency and shear flow profile. In Part 1 of this paper, mathematical models of non-isentropic and isentropic acoustic waves are formulated based on the conservation of mass, momentum and energy for both liquid and perfect gas. Meanwhile, comprehensive solutions based on the Fourier-Bessel theory are provided, which gives a general methodology of iteratively calculating features of the acoustic wave. Numerical comparisons with previous simplified models verify the validity of the proposed models and solutions.

Акустический журнал, 62, № 1, с. pp27-37 (2016) | Рубрика: 04.09

Chen Xiaoqian, Chen Yong, Huang Yiyong, Bai Yuzhu, Hu Dengpeng, Fei Shaoming «Study of thermoviscous dissipation on axisymmetric wave propagating in a shear pipeline flow confined by rigid wall. Part II. Numerical study» Акустический журнал, 62, № 2, с. pp143-150 (2016)

Axisymmetric acoustic wave propagating in a shear pipeline flow confined by a rigid wall is studied in the two-part paper. The effects of viscous friction and thermal conduction on the acoustic wave propagating in the liquid and perfect gas are respectively analyzed under different configurations of acoustic frequency and shear mean flow. In Part 2 of this paper, comprehensive analysis of the effects of shear mean flow and acoustic frequency on the features (relative phase velocity and attenuation coefficient) of the acoustic wave are numerically addressed in cases of water and perfect gas respectively. Comparisons between the non-isentropic and isentropic models are provided in details. Meanwhile, discussions of the thermoviscous effects on the acoustic wave between water and perfect gas are given.

Акустический журнал, 62, № 2, с. pp143-150 (2016) | Рубрика: 04.09

Blachere E.

 

Мещеряков Р.В., Сизов А.Г., Blachere E., Caplat M., Литвак М.М. «Акустическая камера для проверки слуха» Доклады Томского государственного университета систем управления и радиоэлектроники, 2, № 2, с. 212-216 (2010)

Рассматриваются вопросы создания акустической камеры для проверки слуха. Приводится информация по составу материалов, расположению акустической системы.

Доклады Томского государственного университета систем управления и радиоэлектроники, 2, № 2, с. 212-216 (2010) | Рубрики: 13.06 14.01 15.01

Blokhin A.M.

 

Blokhin A.M., Krymskikh D.A. «The stability of numerical boundary treatment for finite-difference splitting scheme for the acoustics equations system» Вычислительные технологии, 3, № 1, с. 40-54 (1998)

Different questions on influence of boundary conditions on stability of the finite-difference splitting scheme are considered in the paper on the example of the initial value and initial-boundary value problems for the acoustics equations system. This scheme is often used for numerical approximations to solutions of aerodynamics problems. It is shown that stability of this scheme depends not only upon the type of the problem (the initial value problem or the initial-boundary value problem) but on its dimension too.

Вычислительные технологии, 3, № 1, с. 40-54 (1998) | Рубрики: 04.01 04.12