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  • 1
    Electronic Resource
    Electronic Resource
    Self-consistent model of the Rayleigh–Taylor instability in ablatively accelerated laser plasma (1994)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 1 (1994), S. 2976-2986 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A self-consistent approach to the problem of the growth rate of the Rayleigh–Taylor instability in laser accelerated targets is developed. The analytical solution of the problem is obtained by solving the complete system of the hydrodynamical equations which include both thermal conductivity and energy release due to absorption of the laser light. The developed theory provides a rigorous justification for the supplementary boundary condition in the limiting case of the discontinuity model. An analysis of the suppression of the Rayleigh–Taylor instability by the ablation flow is done and it is found that there is a good agreement between the obtained solution and the approximate formula σ = 0.9(square root of)gk − 3u1k, where g is the acceleration, u1 is the ablation velocity. This paper discusses different regimes of the ablative stabilization and compares them with previous analytical and numerical works.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.870538
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    On the stability of combustion and laser-produced ablation fronts (1993)
    New York, NY : American Institute of Physics (AIP)
    Physics of Fluids 5 (1993), S. 3822-3824 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A correct approach to the problem of a reduction of the growth rate of the Rayleigh–Taylor (RT) instability in an ablation wave is demonstrated in this paper by considering a slow combustion wave in a gravitational field. It is shown that both the supplementary condition required in the model of discontinuity and the reduction of the instability growth rate can be obtained only by solving the complete system of equations, including the equation of thermal conductivity and energy release which are responsible for the wave propagation and the finite thickness of the wave front. The point is that there is no stabilization of the growth rate of RT instability by a mass flow in the limit of zero thickness of the wave front. The reduction of the growth rate can be obtained rigorously for a finite thickness of the wave front only.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.860601
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Mechanical equipment of the Vilyui No. 3 hydroelectric station (1989)
    Springer
    Power technology and engineering 23 (1989), S. 620-627 
    Details
    ISSN: 1570-1468
    Source: Springer Online Journal Archives 1860-2000
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Conclusions A thorough study of the project made it possible: 1. To unify elements of the set of mechanical equipment, which in turn led to an increase of its reliability, reduction of the time, labor intensity, and cost of manufacturing and installing the equipment, and improvement in the quality of manufacture and assembly as a result of the economically advantageous use of special assembly jigs. Thus, elimination of the use of specially manufactured bulkhead gates of the intake and draft tubes and emergency-guard gates of the bottom outlet saves 420,000 rubles and 450 tons of metal. 2. To use a new design of the linings, which reduced the amount of field welding and welding deformations in the structures, eliminated labor-intensive manual operations on installing anchor rods on the assembled linings and thereby increased the factory readiness of the linings for assembly, reduced the consumption of metal; and the presence of cutoffs in the anchor ribs improved the concreting conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01427534
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  • 4
    Electronic Resource
    Electronic Resource
    First HF radar measurements of summer mesopause echoes at SURA (1997)
    Springer
    Annales geophysicae 15 (1997), S. 935-941 
    Details
    ISSN: 0992-7689
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract HF sounding of the mesosphere was first carried out at SURA in summer 1994 at frequencies in the range 8–9 MHz using one of the sub-arrays of the SURA heating facility. The observations had a range resolution of 3 km. Almost all measurements indicated the presence of strong radar returns from altitudes between 83 and 90 km with features very similar to VHP measurements of mesopause summer echoes at mid-latitudes and polar mesopause summer echoes. In contrast to VHP observations, HF mesopause echoes are almost always present.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s00585-997-0935-z
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  • 5
    Electronic Resource
    Electronic Resource
    On the dynamics of a curved deflagration front (1997)
    Springer
    Journal of experimental and theoretical physics 84 (1997), S. 281-288 
    Details
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An equation describing evolution of a curved deflagration front of finite thickness is obtained for the case of an arbitrary equation of state of the “fuel”, an arbitrary type of energy release and an arbitrary type of thermal conduction. The equation is complemented by conservation laws for the mass flux and the momentum flux through the deflagration front of finite thickness. As an illustration of the method, the growth rates and the cutoff wavelengths for the linear stage of the flame instability are calculated for the case of a flame in an ideal gaseous fuel and for the case of a thermonuclear deflagration propagating in a strongly degenerate matter of white dwarfs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.558133
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