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 1-10    11-12 
1.

Вид документа : Статья из журнала
Шифр издания : 53/O-66
Автор(ы) : Gurashkin A. L, Yampol'skiy A. D., Starostin A.A., Skripov P. V.
Заглавие : Optical studies of the initial stage of spontaneous boiling-up [Электронный ресурс]
Место публикации : Technical Physics Letters . - 2013. - Vol.39, №8. - С. 751-754
Систем. требования: http://download.springer.com/static/pdf/21/art%253A10.1134%252FS1063785013080208.pdf?auth66=1405843459_a0b6041355d78d293ef65dc76e597501&ext=.pdf
Примечания : Библиогр.: с. 754 (11 ref.). - 18.07.2014
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): liquid boiling-up --fiber-optic reflectometry--optical studies
Аннотация: Spontaneous liquid boiling-up is studied using the technique of fiber-optic reflectometry. The speed of the experimental technique (10 MS/s) and small dimensions of the measurement area (9 μm) have opened new possibilities for monitoring the initial stage of boiling-up. When using a double-probe scheme, the fact of measuring the prognostic signal at different times by two sensitive elements of the optical probes was discovered. Based on the experimental results, a hypothesis was formulated regarding the local character of the appearance of the perturbation source generating the observed signal in a superheated liquid. An estimate was obtained for the rate of perturbation propagation in a wide variation range of the degree of liquid superheating
\\\\expert2\\NBO\\Technical Physics Letters (Письма в ЖТФ)\\2013, v. 39, N. 8, p.751.pdf
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2.

Вид документа : Статья из журнала
Шифр издания : 53/E 97
Автор(ы) : Gurashkin A. L, Starostin A.A., Uimin A.A., Yampol'skiy A. D., Ermakov G. V., Skripov P. V.
Заглавие : Experimental determination of superheated liquid density by the optical fiber method
Место публикации : Journal of Engineering Thermophysics. - 2013. - Vol.22, №3. - С. 194-202
Примечания : Bibliogr. : p. 202 (21 ref.)
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): optical fiber method--superheated liquid density --liquid-vapor
Аннотация: An experimental approach to determination of the density of liquid superheated with respect to the liquid-vapor equilibrium temperature, including the range of high degrees of superheating, is developed. The approach is based on application of an optical fiber method combined with a pure bubble chamber. Performance of the method for investigation of the refractive index and density for superheated liquids as functions of temperature and pressure is illustrated in experiments with n-hexane as a reference substance for thermophysical measurements. The relative density measurements are performed with a resolution up to 10-4 at a characteristic time of 1 ms. For absolute measurements, the setup should be calibrated by the known data on the liquid density for the saturation line
\\\\expert2\\NBO\\Journal of Engineering Thermophysics\\2013, V.22, N 3. P. 194-202.pdf
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3.

Вид документа : Статья из журнала
Шифр издания : 53/O-66
Автор(ы) : Gurashkin A. L, Yampol'skiy A. D., Starostin A.A., Skripov P. V.
Заглавие : Optical studies of the initial stage of spontaneous boiling-up [Электронный ресурс]
Место публикации : Technical Physics Letters . - 2013. - Vol.39, №8. - С. 751-754
Систем. требования: http://download.springer.com/static/pdf/21/art%253A10.1134%252FS1063785013080208.pdf?auth66=1405843459_a0b6041355d78d293ef65dc76e597501&ext=.pdf
Примечания : Библиогр.: с. 754 (11 ref.). - 18.07.2014
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): liquid boiling-up --fiber-optic reflectometry--optical studies
Аннотация: Spontaneous liquid boiling-up is studied using the technique of fiber-optic reflectometry. The speed of the experimental technique (10 MS/s) and small dimensions of the measurement area (9 μm) have opened new possibilities for monitoring the initial stage of boiling-up. When using a double-probe scheme, the fact of measuring the prognostic signal at different times by two sensitive elements of the optical probes was discovered. Based on the experimental results, a hypothesis was formulated regarding the local character of the appearance of the perturbation source generating the observed signal in a superheated liquid. An estimate was obtained for the rate of perturbation propagation in a wide variation range of the degree of liquid superheating
\\\\expert2\\NBO\\Technical Physics Letters (Письма в ЖТФ)\\2013, v. 39, N. 8, p.751.pdf
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4.

Вид документа : Статья из журнала
Шифр издания : 53/E 97
Автор(ы) : Gurashkin A. L, Starostin A.A., Uimin A.A., Yampol'skiy A. D., Ermakov G. V., Skripov P. V.
Заглавие : Experimental determination of superheated liquid density by the optical fiber method
Место публикации : Journal of Engineering Thermophysics. - 2013. - Vol.22, №3. - С. 194-202
Примечания : Bibliogr. : p. 202 (21 ref.)
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): optical fiber method--superheated liquid density --liquid-vapor
Аннотация: An experimental approach to determination of the density of liquid superheated with respect to the liquid-vapor equilibrium temperature, including the range of high degrees of superheating, is developed. The approach is based on application of an optical fiber method combined with a pure bubble chamber. Performance of the method for investigation of the refractive index and density for superheated liquids as functions of temperature and pressure is illustrated in experiments with n-hexane as a reference substance for thermophysical measurements. The relative density measurements are performed with a resolution up to 10-4 at a characteristic time of 1 ms. For absolute measurements, the setup should be calibrated by the known data on the liquid density for the saturation line
\\\\expert2\\NBO\\Journal of Engineering Thermophysics\\2013, V.22, N 3. P. 194-202.pdf
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5.

Вид документа : Статья из журнала
Шифр издания : 53/C 73
Автор(ы) : Gurashkin A. L, Starostin A.A., Ermakov G. V., Skripov P. V.
Заглавие : Communication: high speed optical investigations of a character of boiling-up onset
Место публикации : Journal of Chemical Physics. - 2012. - Vol.136, №2. - С. 021102
Примечания : Bibliogr. : p.
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): boiling--heat trahsfer--micro-optics
Аннотация: In this communication, we discuss the phenomenon of attainable superheat of liquid and the peculiarities of its release by spontaneous boiling-up. We have combined the apparatus for superheating, namely, bubble chamber, with a high speed micro-optical method for detailed monitoring of the initial stage of boiling-up. In experiments on the isothermal pressure drop, it was found that the boiling-up onset of n-hexane is accompanied by characteristic step signal. The signal has proved to be typical of the heterogeneous character of boiling-up onset in a whole range of superheating degrees. The performance of the method for investigation of the refractive index and density for superheated liquids as functions of temperature and pressure has been revealed. The experimental error is estimated to be 0.1%.
\\\\expert2\\NBO\\Journal of Chemical Physics\\2012, V.136, p.021102.pdf
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6.

Вид документа : Статья из журнала
Шифр издания : 53/C 73
Автор(ы) : Gurashkin A. L, Starostin A.A., Ermakov G. V., Skripov P. V.
Заглавие : Communication: high speed optical investigations of a character of boiling-up onset
Место публикации : Journal of Chemical Physics. - 2012. - Vol.136, №2. - С. 021102
Примечания : Bibliogr. : p.
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): boiling--heat trahsfer--micro-optics
Аннотация: In this communication, we discuss the phenomenon of attainable superheat of liquid and the peculiarities of its release by spontaneous boiling-up. We have combined the apparatus for superheating, namely, bubble chamber, with a high speed micro-optical method for detailed monitoring of the initial stage of boiling-up. In experiments on the isothermal pressure drop, it was found that the boiling-up onset of n-hexane is accompanied by characteristic step signal. The signal has proved to be typical of the heterogeneous character of boiling-up onset in a whole range of superheating degrees. The performance of the method for investigation of the refractive index and density for superheated liquids as functions of temperature and pressure has been revealed. The experimental error is estimated to be 0.1%.
\\\\expert2\\NBO\\Journal of Chemical Physics\\2012, V.136, p.021102.pdf
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7.

Вид документа :
Шифр издания : 53/H 62
Автор(ы) : Ermakov G. V., Lipnyagov E. V., Perminov S. A., Gurashkin A. L
Заглавие : Heterogeneous boiling-up of superheated liquid at achievable superheat threshold
Место публикации : Journal of Chemical Physics. - 2009. - Vol.131, №3. - С. 031102
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): homogeneous nucleation--boiling-up--liquid
Аннотация: The classical theory of homogeneous nucleation describes well the superheat threshold observed in experiments. It may be assumed therefore that homogeneous boiling-up of a liquid takes place in experiments, and the theory has been verified experimentally well. The streak photography used in this study showed that boiling-up of a superheated liquid at the threshold of the achievable superheat occurs at a limited number of surface fluctuation centers in a vessel, rather than in the bulk as one would expect with homogeneous nucleation. Thus, the homogeneous theory, which rather accurately describes the heterogeneous threshold of the achievable superheat, obviously is not confirmed in
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8.

Вид документа :
Шифр издания : 53/H 62
Автор(ы) : Ermakov G. V., Lipnyagov E. V., Perminov S. A., Gurashkin A. L
Заглавие : Heterogeneous boiling-up of superheated liquid at achievable superheat threshold
Место публикации : Journal of Chemical Physics. - 2009. - Vol.131, №3. - С. 031102
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): homogeneous nucleation--boiling-up--liquid
Аннотация: The classical theory of homogeneous nucleation describes well the superheat threshold observed in experiments. It may be assumed therefore that homogeneous boiling-up of a liquid takes place in experiments, and the theory has been verified experimentally well. The streak photography used in this study showed that boiling-up of a superheated liquid at the threshold of the achievable superheat occurs at a limited number of surface fluctuation centers in a vessel, rather than in the bulk as one would expect with homogeneous nucleation. Thus, the homogeneous theory, which rather accurately describes the heterogeneous threshold of the achievable superheat, obviously is not confirmed in
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9.

Вид документа :
Шифр издания : 53/E 70
Автор(ы) : Ermakov G. V., Gurashkin A. L
Заглавие : Description of heterogeneous boiling up of superheated liquid
Место публикации : Journal of Engineering Thermophysics. - 2007. - Vol.16, №4. - С. 231-235
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): boiling--superheated n-hexane --heterogeneous boiling
Аннотация: The results of measurements of the average expectation time of boiling up of strongly superheated n-hexane in structures from different finely dispersed powders whose smallest size is about 10 nm by using isotherms and isobars are presented. As was proposed by Academician V.P. Skripov, isotherm sections with the heterogeneous boiling up mechanism were processed with the help of Zhurkov’s formula, which is based on the thermofluctuation hypothesis of solid body strength. Thus, temperature dependences of the characteristic volume, whose excess leads to the system division into macroscopic phases, have been found for the systems studied. An approach dealing with the boiling up of superheated liquid as a fluctuation in a locally isolated microvolume is used to describe the isobars. To calculate the work of formation of the characteristic volume, its values obtained at the processing of isotherms are used. The system of equations for the temperature dependence of the average expectation time of n-hexane boiling up in isobars has three empirical constants. A rather accurate description of isobars is obtained at a proper choice of these constants. The result obtained confirms that the idea of Academician V.P. Skripov is successful
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10.

Вид документа :
Шифр издания : 53/E 70
Автор(ы) : Ermakov G. V., Gurashkin A. L
Заглавие : Description of heterogeneous boiling up of superheated liquid
Место публикации : Journal of Engineering Thermophysics. - 2007. - Vol.16, №4. - С. 231-235
ББК : 53
Предметные рубрики: ФИЗИКА
Ключевые слова (''Своб.индексиров.''): boiling--superheated n-hexane --heterogeneous boiling
Аннотация: The results of measurements of the average expectation time of boiling up of strongly superheated n-hexane in structures from different finely dispersed powders whose smallest size is about 10 nm by using isotherms and isobars are presented. As was proposed by Academician V.P. Skripov, isotherm sections with the heterogeneous boiling up mechanism were processed with the help of Zhurkov’s formula, which is based on the thermofluctuation hypothesis of solid body strength. Thus, temperature dependences of the characteristic volume, whose excess leads to the system division into macroscopic phases, have been found for the systems studied. An approach dealing with the boiling up of superheated liquid as a fluctuation in a locally isolated microvolume is used to describe the isobars. To calculate the work of formation of the characteristic volume, its values obtained at the processing of isotherms are used. The system of equations for the temperature dependence of the average expectation time of n-hexane boiling up in isobars has three empirical constants. A rather accurate description of isobars is obtained at a proper choice of these constants. The result obtained confirms that the idea of Academician V.P. Skripov is successful
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 1-10    11-12 
 
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