... Navier-Stokes Based Models in Computational Aeroacoustics . ... The same high accuracy numerical scheme is proposed for the numerical implementation of all the models. It is illustrated that a good efficiency of predictions is provided not only by the scheme accuracy, but also by such computational properties as differential model accuracy and round off errors. The following particular aspects are discussed: the influence of nonlinear effects and the treatment of very small perturbations. ...
. AUTHOR : Nazarenko A. A. 1. ааа Hydrodynamic Sound Generation and Intensification Problem of Some Technological Processes in Power Acoustic Fields . A.F.Nazarenko, A.A.Nazarenko (Odessa State Polytechnic University, Odessa, Ukraine) .
. AUTHOR : Nazarenko A. F. 1. ааа Hydrodynamic Sound Generation and Intensification Problem of Some Technological Processes in Power Acoustic Fields . A.F.Nazarenko, A.A.Nazarenko (Odessa State Polytechnic University, Odessa, Ukraine) .
. AUTHOR : Neis U. 1. ааа The Effect of Ultrasound on Particulate Matter, Especially Micro-Organisms in Complex Water and Waste Water Media . U.Neis (Technical University Hamburg-Harburg, Department of Sanitary and Environmental Engineering, Hamburg, Germany) .
. AUTHOR : Nemeth S. 1. ааа Improving NO Reduction Efficiency by Acoustic Oscillations . S.Nemeth, S.V.Komarov, M.Hirasawa (Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan) .
. AUTHOR : Neshadim M. V. 1. ааа System of Maxwell Equations in Inhomogeneous Medium and Its Equivalents Transformations . M.V.Neshadim, M.V.Neshchadim (Sobolev Institute of Mathematics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia) .
. AUTHOR : Neshchadim M. V. 1. ааа System of Maxwell Equations in Inhomogeneous Medium and Its Equivalents Transformations . M.V.Neshadim, M.V.Neshchadim (Sobolev Institute of Mathematics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia) .
... New Properties of Sound Waves in Nonequilibrium Media with the Negative Second Viscosity . ... In a wide class of nonequilibrium media (e.g. nonisothermal plasmas, chemical and optical active gases, reactors, atmospheric condensation) the second (bulk) viscosity coefficient can become negative due to positive feedback between the sound disturbance and the nonequilibrium heating . ...
. AUTHOR : Nigmatulin R. 1. ааа Dynamics of Collapsing Bubbles: Sonoluminescence and Bubble Fusion . R.Nigmatulin, I.S.Akhatov, A.S.Topolnikov, R.K.Bolotnova (Institute of Mechanics, Ufa Branch of the Russian Academy of Sciences, Ufa, Russia); R.T.Lahey, Jr. (Rensselaer Polytechnic Institute, Troy, NY, USA); R.P.Taleyarkhan (Oak Ridge National Laboratory, Oak Ridge, TN, USA.) .
. AUTHOR : Nikitenko S. I. 1. ааа Ultrasonic Cleaning of Internal Spaces in Parts of Complex Geometrical Form . V.Abramov, V.V.Artemev, S.I.Nikitenko (Institute of General and Inorganic Chemistry of RAS, Moscow, Russia) .
. AUTHOR : Nikitina N. 1. ааа Nondestructive Stress State Evaluation Using Acoustoelasticity Phenomenon . N.Nikitina (Nizhny Novgorod Branch of Blagonravov Mechanical Engineering Research Institute of Russian Academy of Sciences, Nizhny Novgorod, Russia) .
. Abstract . Noether and Master Symmetries for the Toda Lattice . P.Damianou, C.Sophocleous (University of Cyprus, Nicosia, Cyprus) . e-mail: email@example.com . In this paper we examine the interelation between Noether symmetries, master symmetries and recursion operators for a well-known classical mechanical system, the Toda lattice. Topics include, invariants, higher Poisson brackets and various relations they satisfy. These results may be used for other integrable systems as well. Section : 12
... Non-Uniform Retarded Time Grid Algorithms for the KZK Nonlinear Parabolic Wave Equation . ... Am., 97, 906-917 (1995)] discuss a FDTD implementation of the KZK equation on a uniform retarded time grid for cylindrically symmetric sources. The implementation of a non-uniform retarded time grid over the conventional uniform retarded time grid will be discussed. The non-uniform time grid provides a significant reduction in memory requirements and leads to substantial reduction in computation time. ...
... Non-Uniqueness of Solutions to Nonlinear Elasticity Equations and Its Reason . ... The self-similar arbitrary discontinuity disintegration problem and piston-problem are considered in framework of non-linear elasticity theory. ... The anisotropy can be a media property or can depend on previous deformations in the discontinuity plane. ... A sufficient criterion of the non-uniqueness of solution is found for an arbitrary hyperbolic system of the conservation laws. ...