Rudenko, Oleg Vladimirovich

Father - Vladimir Grigoryevich, a native of Tbilisi, lost his parents early, was brought up in an orphanage from two years old, participated in the Great Patriotic War , after its completion he worked as a production engineer. Mother - Alexandra Petrovna, originally from Kharkov , worked as an accountant.

O. V. Rudenko graduated from high school with a gold medal . Having won the Republican Physics Olympiad , after leaving school he left for Moscow and entered the Faculty of Physics of Moscow State University without a competition. He graduated from the university in 1971 . He defended his candidate dissertation “Related problems of nonlinear acoustics and hydrodynamics” ahead of schedule in 1973 . In 1974 he was hired at Moscow State University as a junior research fellow. In 1977 he was involved in teaching. He gave lectures on the courses " Electrodynamics ", " Wave Theory ", " Dynamics of Continuous Media ", in addition, he conducted seminars on radiophysical disciplines.

In 1977, under the leadership of R.V. Khokhlov, he organized an experimental laboratory of nonlinear and laser acoustics, located in the nonlinear optics building of Moscow State University. In 1981 he defended his doctoral dissertation on the topic “Interaction of modulated weakly dispersing waves of high intensity”. Two years later he received the academic title of assistant professor .

In 1987, he left the established laboratory and transferred to the post of head of the Department of Acoustics. From 1990 to 1997, he combined this position with the leadership of the Department of Radiophysics and Electronics of Moscow State University. In 1990, an experimental group was created at the department, which continued the work of O. V. Rudenko in the field of nonlinear and laser acoustics.

In 1997, he was elected a corresponding member of the RAS . In 2002-2014, he was chairman of the Expert Council on Physics of the Higher Attestation Commission . In 2016, he was appointed a member of the Presidium of the Higher Attestation Commission. From 1997 to 2003 served as Chairman of the Physics Expert Council and Deputy Chairman of the RFBR Fund Council.

In 2008 he was elected a full member of the Russian Academy of Sciences.

He began his scientific career in the third year of the university under the guidance of R.V. Khokhlov . By the time he graduated, he already had 10 publications. His thesis was recognized as the best at Moscow State University and subsequently received the first prize at the All-Union Competition and was awarded the medal of the USSR Ministry of Higher Education.

In graduate school, he studied the problems of the theory of nonlinear waves, as well as laser photochemistry and the problem of creating gamma-ray lasers . The results of the PhD thesis formed the basis of a new discipline - nonlinear acoustics. Rudenko created the theory of unsteady flows of Eckart , the theory of “acoustic wind”, explaining the dependence of the characteristics and characteristics of the water flow depending on time and wave strength. He also showed that the Landau solution for a flooded jet can be used to explain the excitation of "wind" when a fluid moves under the influence of radiation pressure. Rudenko predicted the phenomenon of self-reflection of acoustic waves that occurs during the formation of a shock wave , which subsequently splits into two, one of which runs back. This effect was discovered experimentally and found its application in acoustic diagnostics. Rudenko also obtained some exact self-similar solutions to equations such as the Burgers equation .

A number of important scientific results were published in the first monograph by O. V. Rudenko, “Theoretical Foundations of Nonlinear Acoustics,” written in collaboration with S. I. Soluyan. For the first time, the mathematical apparatus of nonlinear acoustics, developed by R. V. Khokhlov, was sequentially presented in it. In particular, the theory of intense diffracting beams was given on the basis of the equation, which O. V. Rudenko proposed to call the Khokhlov-Zabolotskaya equation (now it is also known as the KZ equation). In the same monograph, which became a classic, a new integro-differential equation was proposed to describe the propagation of waves in dispersive media with memory. A general approach to the problems of nonlinear interaction of nondispersive waves and waves with weak dispersion was also formulated there. For the first time in this monograph, a frequency-time description of fields was applied to solve problems of parametric action, which turned out to be extremely convenient for strongly nonlinear regimes containing discontinuities .

In the mid-1970s, O. V. Rudenko in a series of works developed the theory of nonlinear transformation of spectra . These works became the basis of such directions as statistical nonlinear acoustics, laser optoacoustics, and nonlinear hydroacoustics .

Under the leadership of Rudenko, a number of world-class experiments were carried out at Moscow State University, in which such effects as thermal self-action of ultrasound , a decrease in nonlinear absorption with the introduction of additional linear losses, bistability of resonators, asymmetric distortion of shock waves were discovered. His experimental group developed methods of laser-acoustic diagnostics.

Working at the Department of Acoustics, Rudenko and his experimental group managed to discover a new effect of nonlinear interaction of acoustic waves: thermal self-focusing of sawtooth waves in a non-absorbing medium. His group also found a physical limit restricting the fields in energy concentrators. Under the guidance of Rudenko, the world's first laser-acoustic lithotripter , a device for contactless destruction of kidney stones, was also created there .

Long-term cooperation of Rudenko and other physicists at Moscow State University with mathematicians led to the creation of a universal software package for the problems of nonlinear physics NACSI .

In the first half of the 1990s, at the suggestion of O. V. Rudenko, a series of works was carried out to predict the level of noise and sound shocks from new generation supersonic aircraft .

In 1998, Rudenko published an article on remote monitoring of shear wave generation under the influence of radiation pressure from modulated ultrasound. This work formed the basis of a wide class of instruments for the diagnosis of soft tissues, in particular, cancerous tumors. In the future, Rudenko also paid considerable attention to biomedical tasks. In particular, his studies contributed to an understanding of the mechanisms of the immune response to cancer cells, leading to the disappearance of metastases.

Part of the work of Rudenko is devoted to geophysics . Thus, he explained the presence of sound resonances in recording the response of the Elbrus volcano to seismic signals of various sources, and showed that the presence of these resonances indicates an imminent volcanic eruption. Coma this Rudenko developed the theory of nonlinearity of granular media saturated with liquids, and also predicted the resonant excitation and waveguide propagation of internal waves in the ocean. He constructed the theory of giant nonlinearities of structurally inhomogeneous media and found the limit of this nonlinearity.

OV V. Rudenko found a number of exact solutions of the equations of mathematics ^[3] . In particular, a fourth-order differential equation that describes waves in a scattering medium is proposed and solved. He proposed an original method for solving problems by complicating them. This method contradicts standard methods, usually based on simplification of equations, however, it allows obtaining equations with new symmetries .

• O.V. Rudenko, S.I. Soluyan. Theoretical foundations of nonlinear acoustics. - M .: Nauka , 1975 .-- 287 p.
• OV Rudenko, SI Soluian. Theoretical foundations of nonlinear acoustics. - Consultants Bureau, 1977. - 274 p. - ISBN 0-30-610933-6 .
• M. B. Vinogradova, O. V. Rudenko, A. P. Sukhorukov . Theory of waves. - M .: Nauka , 1979.- 384 p.
• B.K. Novikov, O.V. Rudenko, V.I. Timoshenko. Nonlinear sonar. - L .: Shipbuilding, 1981. - 264 p.
• O. A. Vasilieva, A. A. Karabutov, E. A. Lapshin, O. V. Rudenko. Interaction of one-dimensional waves in media without dispersion. - M .: Publishing house of Moscow State University, 1983. - 150 p.
• BK Novikov, OV Rudenko, VI Timoshenko. Nonlinear Underwater Acoustics. - Acoustical Society of America translation book , 1987 .-- 261 p. - ISBN 0-88-318522-9 .
• M. B. Vinogradova, O. V. Rudenko, A. P. Sukhorukov . Theory of waves. - 2nd, rev. and additional .. - M .: Nauka , 1990 .-- 432 p. - ISBN 5-02-014050-3 .
• S.N. Gurbatov , O.V. Rudenko. Acoustics in tasks. - M .: Science . Fizmatlit , 1996 .-- 336 p. - ISBN 5-02-014742-7 .
• O. V. Rudenko, S. N. Gurbatov , K. M. Hedberg. Nonlinear acoustics in tasks and examples. - M .: Fizmatlit , 2007 .-- 176 p. - 1,500 copies - ISBN 5-9221-0761-5 .

• USSR State Prize (1985) - for a series of works "Creating the foundations of nonlinear acoustics and its applications"
• Prize to them. M.V. Lomonosova (1991) - for work on the creation of a laser-acoustic lithotripter
• State Prize of the Russian Federation (1997) - for the series of works “Dynamics of intense noise waves and nonlinear structures in dispersion-free media”
• Prize of the publishing house MAIK-Nauka (1998) - for the article that formed the basis for the development of soft tissue diagnostic devices
• Medal of the Order "For Merit to the Fatherland", II degree (2005)
• Honorary Worker of Higher Professional Education of the Russian Federation (2005).
• Order of Friendship (2015) - for achievements in the development of education, scientific and pedagogical activity, a great contribution to the training of qualified specialists ^[4]
• Emeritus Professor of Moscow University (2018).

• A.F. Andreev and others Oleg Vladimirovich Rudenko (on the occasion of his 60th birthday) (Russian) // Uspekhi Fiz . - 2007 .-- T. 177 . - S. 1385 .
• M.S. Aksentieva et al. Oleg Vladimirovich Rudenko (on the occasion of his 70th birthday) (Russian) // Usp . - 2017 .-- T. 187 . - S. 1143-1144 .

• Profile of Oleg Vladimirovich Rudenko on the official website of the RAS
• Page on the site "Annals of Moscow University"
• Historical background on the website of the Archive of the Russian Academy of Sciences