Zobrazeno 1 - 10
of 37
pro vyhledávání: '"V. N. Nikolaevskii"'
Autor:
V. A. Babkin, V. N. Nikolaevskii
Publikováno v:
Journal of Engineering Physics and Thermophysics. 84:430-439
Based on the model of anisotropic wall turbulence in the near-wall layer and the momentum model in the flow core, velocity profiles in the entire region of the turbulent flow of an incompressible fluid in a circular pipe and plane channel have been o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::478391f22671cdf7e1f758c0775c5240
https://doi.org/10.1007/s10891-011-0489-5
https://doi.org/10.1007/s10891-011-0489-5
Publikováno v:
Izvestiya, Physics of the Solid Earth. 46:1095-1104
A mathematical model of elastoplastic rock deformation, under which brittle failure and shear slippages occur on the microscopic level and cataclastic flow on the macrolevel, is formulated. Since the model allows for the motion of a fluid in the pore
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db6dade932fac27960711581695b2766
https://doi.org/10.1134/s1069351310120062
https://doi.org/10.1134/s1069351310120062
Autor:
V. N. Nikolaevskii, S. Z. Dunin
Publikováno v:
Acoustical Physics. 51:S61-S66
A nonlinear equation is obtained for waves propagating in porous media of arbitrary consolidation (relative rigidity) saturated with live (i.e., air-bearing) oil. The equation describes the evolution of fast and slow Biot-Frenkel longitudinal acousti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa7e00ca301b7754c07e9000c5e0b69e
https://doi.org/10.1134/1.2133954
https://doi.org/10.1134/1.2133954
Autor:
V. N. Nikolaevskii, G. S. Stepanova
Publikováno v:
Acoustical Physics. 51:S131-S139
At the first stage of seismic action, the attenuation of acoustic waves in real (porous, creviced) rocks is always related to the energy pumping to high-frequency (ultrasonic) modes, and only at the next stage are these waves converted into chaotic t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::035864614e7e78edfd1ec0953eba1392
https://doi.org/10.1134/1.2133961
https://doi.org/10.1134/1.2133961
Publikováno v:
Fluid Dynamics. 38:293-302
Sludge injection, i. e., injection of a mixture of water and solid particles (rock waste or drilling cuttings), can be interpreted as the penetration of a plastic mass into an elastoplastic water-pressurized stratum under the action of high gradients
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::beafd9fd6d82541a7664c51c4b5a7c32
https://doi.org/10.1023/a:1024281321151
https://doi.org/10.1023/a:1024281321151
Autor:
S. A. Arsen'ev, V. N. Nikolaevskii
Publikováno v:
Atomic Energy. 90:366-373
A moment theory of vortex turbulence, including equations of conservation of mass, momentum, and angular momentum and moment of inertia of rotating, elliptic, mesoscale vortices filling a turbulent flow is developed. The vortices give rise to mixing
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b20d5415a4719e27727fd0229bf1b87
https://doi.org/10.1023/a:1011368307538
https://doi.org/10.1023/a:1011368307538
Autor:
V. N. Nikolaevskii, D. N. Mikhailov
Publikováno v:
Fluid Dynamics. 35:715-724
The influence of nonequilibrium effects developing due to the formation of an emulsion of each phase (gas bubbles in the water and water dust in the gas) on the flow dynamics is investigated with reference to the displacement of water by a gas. The n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f16757359b2afc7104e4635a653b251e
https://doi.org/10.1023/a:1026694932697
https://doi.org/10.1023/a:1026694932697
Autor:
O.Yu. Dinariev, V. N. Nikolaevskii
Publikováno v:
International Journal of Solids and Structures. 35:4575-4586
A Cosserat model is developed in nonlinear form to describe the appearance of lower frequencies in seismic waves spectra. As in the Ericksen theory of liquid crystals, elastic and viscous rheological elements are combined to get sensible results. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f5e917646b5230f2058ac639213418c
https://doi.org/10.1016/s0020-7683(98)00084-5
https://doi.org/10.1016/s0020-7683(98)00084-5
Autor:
S. B. Grafutko, V. N. Nikolaevskii
Publikováno v:
Fluid Dynamics. 33:745-752
The problem of sand production (dilatant-plastic reservoir fragmentation) in the process of pumping-out fluid through an uncased borehole is considered. Taking the dilatant change in reservoir porosity into account makes it possible to find a relatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::836f50b1734f8a74b02520c05a9780ad
https://doi.org/10.1007/bf02698625
https://doi.org/10.1007/bf02698625
Publikováno v:
Fluid Dynamics. 28:803-807
The mathetical model of porous medium anisotropy induced by an intense flow is discussed. The model is based on the orientation and deformation of the particles of the elastic matrix. The governing law of flow with induced anisotropy is analyzed and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92e5c42b7fc57be287bb7caa759ec4c6
https://doi.org/10.1007/bf01049782
https://doi.org/10.1007/bf01049782