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1.

Вид документа : Статья из журнала
Шифр издания : 53/B 16
Автор(ы) : Baidakov V. G., Tipeev A. O.
Заглавие : Mechanical instability and nucleation in a Lennard-Jones fcc crystal at limiting stretching [Электронный ресурс]
Место публикации : Chemical Physics Letters. - 2016. - Vol. 643. - С. 6-9
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0009261415008489
Примечания : Bibliogr. : p. 8-9 (38 ref.). - 21.12.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): activation mechanisms--critical nuclei--crystal phase
Аннотация: The method of molecular dynamics simulation has been used to investigate the mechanism of phase decay of a Lennard-Jones fcc crystal close to the boundary of a'ideal strength'. The attainability of states where the isothermal bulk modulus KT = ρ(∂p/∂ρ)T = 0 and KT 0 has been demonstrated at negative pressures. It has been shown that the decay of the crystal phase proceeds by different activation mechanisms: (i) by the formation of voids at temperatures below that of the endpoint of the melting line and (ii) by liquid-phase critical nuclei formation above this temperature
\\\\expert2\\nbo\\Chemical Physics Letters\\2016, v. 643, p. 6-9.pdf
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2.

Вид документа : Статья из журнала
Шифр издания : 53/B 16
Автор(ы) : Baidakov V. G., Tipeev A. O.
Заглавие : Mechanical instability and nucleation in a Lennard-Jones fcc crystal at limiting stretching [Электронный ресурс]
Место публикации : Chemical Physics Letters. - 2016. - Vol. 643. - С. 6-9
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0009261415008489
Примечания : Bibliogr. : p. 8-9 (38 ref.). - 21.12.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): activation mechanisms--critical nuclei--crystal phase
Аннотация: The method of molecular dynamics simulation has been used to investigate the mechanism of phase decay of a Lennard-Jones fcc crystal close to the boundary of a'ideal strength'. The attainability of states where the isothermal bulk modulus KT = ρ(∂p/∂ρ)T = 0 and KT 0 has been demonstrated at negative pressures. It has been shown that the decay of the crystal phase proceeds by different activation mechanisms: (i) by the formation of voids at temperatures below that of the endpoint of the melting line and (ii) by liquid-phase critical nuclei formation above this temperature
\\\\expert2\\nbo\\Chemical Physics Letters\\2016, v. 643, p. 6-9.pdf
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3.

Вид документа : Статья из журнала
Шифр издания : 53/K 25
Автор(ы) : Kaverin A. M., Andbaeva V. N., Baidakov V. G.
Заглавие : Attainable superheating of the oxygen-nitrogen-helium solutions [Электронный ресурс]
Место публикации : Thermophysics and Aeromtchanics. - 2015. - Vol. 22, № 1. - С. 85-94
Систем. требования: http://www.scopus.com/record/display.uri?eid=2-s2.0-84928879846
Примечания : Bibliogr. : p. 94 (19 ref.). - 18.11.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): additive approximation --solutions--homogeneous nucleation
Аннотация: Method of measuring the lifetime of the superheated liquid was used to determine temperatures of the limit superheating of the solution of oxygen-nitrogen-helium. The method of calculating the properties of this solution (temperature of limit superheating, saturated vapor pressure, and density) based on the data on the properties of solutions of oxygen-helium and nitrogen-helium was proposed. The surface tension of the solution of oxygen-nitrogen-helium was determined in a special experimen
\\\\expert2\\nbo\\Thermophysics and Aeromechanics\\2015, V. 22, N 1. P. 85-94.pdf
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4.

Вид документа : Статья из журнала
Шифр издания : 53/B 16
Автор(ы) : Baidakov V. G., Pankov A. S.
Заглавие : Nucleation in ethane-nitrogen solutions. I. Homogeneous nucleation [Электронный ресурс]
Место публикации : International Journal of Heat and Mass Transfer. - 2015. - Vol. 86. - С. 930-935
Систем. требования: http://www.sciencedirect.com/science?_ob=ArticleListURL&_method
Примечания : Bibliogr. : p. 935 (32 ref.). - 18.11.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): classical nucleation theory --method of lifetime measurement--ethane-nitrogen solution
Аннотация: The method of lifetime measurement is used to investigate the kinetics of spontaneous boiling-up of ethane-nitrogen solutions. Superheating temperatures Tn of solutions have been determined in experiments at pressure p = 1.0, 1.6 MPa and nitrogen concentration in ethane x = 0.5, 1.5 mol% in the nucleation rate range J = 1 × 104-2 × 108 s-1 m-3. At J 3 × 106 s-1 m-3 one can observe a satisfactory agreement between experimental data and homogeneous nucleation theory with respect to the temperature dependence of the nucleation rate and a systematic disagreement in the superheating temperature. At x = 0.5 mol% attainable superheating temperatures achieved by experiment coincide within the experimental error with theoretical values, and at x = 1.5 mol% exceed them by approximately 1.7 K. It is shown that one possible reason of such "excess superheating" of a solution beyond the theoretical value of Tn may be the absence of adsorption equilibrium at the critical bubble-ambient solution interface
\\\\expert2\\nbo\\International Journal of Heat and Mass Transfer\\2015, v. 86, p.930-935.pdf
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5.

Вид документа : Статья из журнала
Шифр издания : 53/B 16
Автор(ы) : Baidakov V. G., Pankov A. S.
Заглавие : Nucleation in ethane–nitrogen solutions. II. Heterogeneous and initiated nucleation [Электронный ресурс]
Место публикации : International Journal of Heat and Mass Transfer. - 2015. - Vol. 86. - С. 936-942
Систем. требования: http://www.sciencedirect.com/science/article/pii/S0017931015003312
Примечания : Bibliogr. : p. 942 (18 ref.). - 18.11.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): nucleation --method of continuous pressure lowering--heterogeneous nucleation --superheating
Аннотация: The method of continuous pressure decrease has been used to investigate limiting (attainable) stretches of ethane–nitrogen solutions. Experiments were conducted at temperatures of 260, 266, 270, and 276 K and at nitrogen concentrations in the solution of 0.5 and 1.5 mol%. Pressure decrease rates were taken in the range 0.01–0.1 MPa/s. Distribution functions of liquid boiling-up events in dependence on pressure have been obtained allowing one to determine the most probable (attainable) pressures of liquid boiling-up and the nucleation rate. The results are interpreted in terms of nucleation thermodynamics and kinetics in liquids on a solid surface containing inclusions that initiate the boiling-up processes. It is shown that for realizing homogeneous nucleation it is not necessarily required that the wettability is close to the ideal one. The reasons for the discrepancy between experimental data and predictions of homogeneous nucleation theory at nucleation rates J 3 × 106 s−1 m−3 are discussed.
\\\\expert2\\nbo\\International Journal of Heat and Mass Transfer\\2015, v. 86, p.936-942.pdf
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6.

Вид документа : Статья из журнала
Шифр издания : 53/B 16
Автор(ы) : Baidakov V. G., Kaverin A. M., Grishina K. A.
Заглавие : Surface tension of dimethyl ether in the temperature range 120–214 K [Электронный ресурс]
Место публикации : Russian Journal of Physical Chemistry A. - 2015. - Vol. 89, № 5. - С. 782-785
Систем. требования: http://link.springer.com/article/10.1134/S0036024415050076
Примечания : Bibliogr. : p. 785 (14 ref.). - 18.11.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): capillary constant --dimethyl ether--surface tension
Аннотация: The capillary constant a 2 was measured by the differential capillary method of surface tension measurement. The surface tension σ of dimethyl ether was calculated. The experiments were performed both above the triple point temperature (T t = 131.66 K) and below it in the range in which the coexisting liquid and gas are metastable. Equations that approximate the temperature dependences of a 2 and σ were suggested. The excess surface entropy and energy were determined. The surface entropy had a maximum at T ≈ 190 K.
\\\\expert2\\nbo\\Russian Journal of Physical Chemistry A, Focus on Chemistry\\2015, V.89, N 1, p.782-785.pdf
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7.

Вид документа : Статья из журнала
Шифр издания : 53/B 16
Автор(ы) : Baidakov V. G.
Заглавие : Surface tension of cavitation pockets according to data of computer simulation of nucleation in a stretched fluid [Электронный ресурс]
Место публикации : Colloid Journal (Translation of Kolloidnyi Zhurnal). - 2015. - Vol. 77, № 2. - С. 119-124
Систем. требования: http://link.springer.com/article/10.1134/S1061933X15020027
Примечания : Bibliogr. : p. 124 (40 ref.). - 18.11.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): critical cavitation pockets-- lennard-jones fluid
Аннотация: Surface tension γ and effective radius R of critical cavitation pockets in a stretched Lennard-Jones fluid have been determined from the data on pocket formation work W *. The W * value has been calculated in terms of the stationary homogeneous nucleation theory from the results of molecular dynamics simulation of the parameters of cavitation process in a range of reduced temperatures T* = k B T/ɛ = 0.35–0.8. The calculated data have been approximated by the extended Tolman equation, which, in addition to linear correction (∼δ∞/R), takes into account the quadratic correction (∼l 2/R 2) for curvature to the surface tension of a critical pocket. It has been shown that parameter δ∞ is negative and amounts to a few tenths of an atom diameter, with the value of l being substantially dependent on temperature and reaching the diameter of a Lennard-Jones atom at the upper boundary of the considered temperature range.
\\\\expert2\\nbo\\Colloid Journal\\2015, V.77, N2,119.pdf
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8.

Вид документа : Статья из журнала
Шифр издания : 53/B 16
Автор(ы) : Baidakov V. G., Tipeev A. O.
Заглавие : Nucleation of liquid droplets and voids in a stretched Lennard-Jones fcc crystal [Электронный ресурс]
Место публикации : Journal of Chemical Physics. - 2015. - Vol. 143, № 12. - С. 124501/1-124501/11
Систем. требования: http://scitation.aip.org/content/aip/journal/jcp/143/12/10.1063/1.4931108
Примечания : 19.11.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): molecular dynamics simulation--metastable lennard-jones
Аннотация: The method of molecular dynamics simulation has been used to investigate the phase decay of a metastable Lennard-Jones face-centered cubic crystal at positive and negative pressures. It is shown that at high degrees of metastability, crystal decay proceeds through the spontaneous formation and growth of new-phase nuclei. It has been found that there exists a certain boundary temperature. Below this temperature, the crystal phase disintegrates as the result of formation of voids, and above, as a result of formation of liquid droplets. The boundary temperature corresponds to the temperature of cessation of a crystal–liquid phase equilibrium when the melting line comes in contact with the spinodal of the stretched liquid. The results of the simulations are interpreted in the framework of classical nucleation theory. The thermodynamics of phase transitions in solids has been examined with allowance for the elastic energy of stresses arising owing to the difference in the densities of the initial and the forming phases. As a result of the action of elastic forces, at negative pressures, the boundary of the limiting superheating (stretching) of a crystal approaches the spinodal, on which the isothermal bulk modulus of dilatation becomes equal to zero. At the boundary of the limiting superheating (stretching), the shape of liquid droplets and voids is close to the spherical one
\\\\expert2\\nbo\\Journal of Chemical Physics\\2015, v.143, p.124501.pdf
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9.

Вид документа : Статья из журнала
Шифр издания : 53/B 16
Автор(ы) : Baidakov V. G., Pankov A. S.
Заглавие : Nucleation in ethane-nitrogen solutions. I. Homogeneous nucleation [Электронный ресурс]
Место публикации : International Journal of Heat and Mass Transfer. - 2015. - Vol. 86. - С. 930-935
Систем. требования: http://www.sciencedirect.com/science?_ob=ArticleListURL&_method
Примечания : Bibliogr. : p. 935 (32 ref.). - 18.11.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): classical nucleation theory --method of lifetime measurement--ethane-nitrogen solution
Аннотация: The method of lifetime measurement is used to investigate the kinetics of spontaneous boiling-up of ethane-nitrogen solutions. Superheating temperatures Tn of solutions have been determined in experiments at pressure p = 1.0, 1.6 MPa and nitrogen concentration in ethane x = 0.5, 1.5 mol% in the nucleation rate range J = 1 × 104-2 × 108 s-1 m-3. At J 3 × 106 s-1 m-3 one can observe a satisfactory agreement between experimental data and homogeneous nucleation theory with respect to the temperature dependence of the nucleation rate and a systematic disagreement in the superheating temperature. At x = 0.5 mol% attainable superheating temperatures achieved by experiment coincide within the experimental error with theoretical values, and at x = 1.5 mol% exceed them by approximately 1.7 K. It is shown that one possible reason of such "excess superheating" of a solution beyond the theoretical value of Tn may be the absence of adsorption equilibrium at the critical bubble-ambient solution interface
\\\\expert2\\nbo\\International Journal of Heat and Mass Transfer\\2015, v. 86, p.930-935.pdf
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10.

Вид документа : Статья из журнала
Шифр издания : 53/B 16
Автор(ы) : Baidakov V. G.
Заглавие : Surface tension of cavitation pockets according to data of computer simulation of nucleation in a stretched fluid [Электронный ресурс]
Место публикации : Colloid Journal (Translation of Kolloidnyi Zhurnal). - 2015. - Vol. 77, № 2. - С. 119-124
Систем. требования: http://link.springer.com/article/10.1134/S1061933X15020027
Примечания : Bibliogr. : p. 124 (40 ref.). - 18.11.15
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): critical cavitation pockets-- lennard-jones fluid
Аннотация: Surface tension γ and effective radius R of critical cavitation pockets in a stretched Lennard-Jones fluid have been determined from the data on pocket formation work W *. The W * value has been calculated in terms of the stationary homogeneous nucleation theory from the results of molecular dynamics simulation of the parameters of cavitation process in a range of reduced temperatures T* = k B T/ɛ = 0.35–0.8. The calculated data have been approximated by the extended Tolman equation, which, in addition to linear correction (∼δ∞/R), takes into account the quadratic correction (∼l 2/R 2) for curvature to the surface tension of a critical pocket. It has been shown that parameter δ∞ is negative and amounts to a few tenths of an atom diameter, with the value of l being substantially dependent on temperature and reaching the diameter of a Lennard-Jones atom at the upper boundary of the considered temperature range.
\\\\expert2\\nbo\\Colloid Journal\\2015, V.77, N2,119.pdf
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