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Общее количество найденных документов : 208
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1.
Инвентарный номер: нет.
   


   
    1/f noise and self-organized criticality in crisis regimes of heat and mass transfer / V. N. Skokov, V. P. Koverda, A. V. Reshetnikov, V. P. Skripov, N. A. Mazheiko, A. V. Vinogradov // International Journal of Heat and Mass Transfer. - 2003. - Vol. 46, № 10. - С. 1879-1883
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
1/f-NOISE -- FLUCTUATIONS -- FLICKER NOISE
Аннотация: Thermal fluctuations under the transition from nucleate to film boiling of water on a wire heater and fluctuations of jet form during an outflow of superheated liquid from a pressure vessel were experimentally investigated. It has been found that power spectrum of the fluctuations has got a low frequency component corresponding to a 1/f law (flicker noise).??The effect given is connected with the occurrence of nonequilibrium phase transitions in the systems: a crisis of heat transfer under the transition from nucleate to film boiling and a crisis of a flow in boiling-up of superheated liquid jet??

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2.
Инвентарный номер: нет.
   


   
    1/f noise and self-organized criticality in crisis regimes of heat and mass transfer / V. N. Skokov, V. P. Koverda, A. V. Reshetnikov, V. P. Skripov, N. A. Mazheiko, A. V. Vinogradov // International Journal of Heat and Mass Transfer. - 2003. - Vol. 46, № 10. - С. 1879-1883
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
1/f-NOISE -- FLUCTUATIONS -- FLICKER NOISE
Аннотация: Thermal fluctuations under the transition from nucleate to film boiling of water on a wire heater and fluctuations of jet form during an outflow of superheated liquid from a pressure vessel were experimentally investigated. It has been found that power spectrum of the fluctuations has got a low frequency component corresponding to a 1/f law (flicker noise).??The effect given is connected with the occurrence of nonequilibrium phase transitions in the systems: a crisis of heat transfer under the transition from nucleate to film boiling and a crisis of a flow in boiling-up of superheated liquid jet??

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3.
Инвентарный номер: нет.
   
   A 10


   
    A method of controlled pulse heating: Applications / P. V. Skripov, A. A. Smotritskiy, A. A. Starostin, A. V. Shishkin // Journal of Engineering Thermophysics. - 2007. - Vol.16, №3. - С. 155-163
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
THERMOPHYSICAL PROPERTIES -- THERMAL STABILIZATION -- HIGH-MOLECULAR FLUIDS
Аннотация: This paper is devoted to the state-of-the-art and technical potentials of the pulse heating method for the thin wire probe created in the Ural thermophysical school for studying the kinetics of spontaneous boiling and the related phenomenon of liquid attainable superheating. Special attention is paid to the search for technical means for controlling the power of the probe heating in a pulse experiment with the thermophysical properties of the substance taken into account. Applications of three particular cases are considered: techniques for the constant heating power, the thermal stabilization of the pulse-heated probe, and cooling of the shock-heated probe for investigating the behavior of multicomponent and high-molecular fluids essentially superheated above the temperature of phase equilibrium and/or temperature of molecule thermodestruction in a quasi-static process. Opportunities for application of the method are presented, in particular, for fast detection of volatile admixtures (including their traces) in high-molecular fluids, e.g., in oils of power equipment

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4.
Инвентарный номер: нет.
   
   A 10


   
    A method of controlled pulse heating: Applications / P. V. Skripov, A. A. Smotritskiy, A. A. Starostin, A. V. Shishkin // Journal of Engineering Thermophysics. - 2007. - Vol.16, №3. - С. 155-163
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
THERMOPHYSICAL PROPERTIES -- THERMAL STABILIZATION -- HIGH-MOLECULAR FLUIDS
Аннотация: This paper is devoted to the state-of-the-art and technical potentials of the pulse heating method for the thin wire probe created in the Ural thermophysical school for studying the kinetics of spontaneous boiling and the related phenomenon of liquid attainable superheating. Special attention is paid to the search for technical means for controlling the power of the probe heating in a pulse experiment with the thermophysical properties of the substance taken into account. Applications of three particular cases are considered: techniques for the constant heating power, the thermal stabilization of the pulse-heated probe, and cooling of the shock-heated probe for investigating the behavior of multicomponent and high-molecular fluids essentially superheated above the temperature of phase equilibrium and/or temperature of molecule thermodestruction in a quasi-static process. Opportunities for application of the method are presented, in particular, for fast detection of volatile admixtures (including their traces) in high-molecular fluids, e.g., in oils of power equipment

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5.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable superheat in cryogenic and low-boiling - point (volatile) liquids [Text] / V. G. Baidakov // Fluid Mechanics - Soviet Research. - 1987. - V. 16, N 2. - P62
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ПЕРЕГРЕВ ЖИДКОСТЕЙ -- ЖИДКОСТИ КРИОГЕННЫЕ -- КРИОГЕННЫЕ ЖИДКОСТИ -- ЖИДКОСТИ ИСПАРЯЕМЫЕ -- ИСПАРЯЕМЫЕ ЖИДКОСТИ -- ПЕРЕГРЕВ ДОСТИЖИМЫЙ -- ДОСТИЖИМЫЙ ПЕРЕГРЕВ -- ТЕПЛОФИЗИКА

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6.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable superheat in cryogenic and low-boiling - point (volatile) liquids [Text] / V. G. Baidakov // Fluid Mechanics - Soviet Research. - 1987. - V. 16, N 2. - P62
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ПЕРЕГРЕВ ЖИДКОСТЕЙ -- ЖИДКОСТИ КРИОГЕННЫЕ -- КРИОГЕННЫЕ ЖИДКОСТИ -- ЖИДКОСТИ ИСПАРЯЕМЫЕ -- ИСПАРЯЕМЫЕ ЖИДКОСТИ -- ПЕРЕГРЕВ ДОСТИЖИМЫЙ -- ДОСТИЖИМЫЙ ПЕРЕГРЕВ -- ТЕПЛОФИЗИКА

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7.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable Superheat of Argon-Helium, Argon-Neon Solutions [Text] / V. G. Baidakov, A. M. Kaverin, V. N. Andbaeva // Journal of Physical Chemistry B. - 2008. - Vol. 112, № 41. - P12973-12975
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ARGON
Аннотация: The method of lifetime measurement has been used to investigate the kinetics of spontaneous boiling-up of superheated argonhelium and argon?neon solutions. Experiments were made at a pressure of p = 1.5 MPa and concentrations up to 0.33 mol% in the range of nucleation rates from 104 to 108 s1 m3. The homogeneous nucleation regime has been distinguished. With good agreement between experimental data and homogeneous nucleation theory in temperature and concentration dependences of the nucleation rate, a systematic underestimation by 0.250.34 K has been revealed in superheat temperatures over the saturated line attained by experiment as compared with theoretical values calculated in a macroscopic approximation. The revealed disagreement between theory and experiment is connected with the dependence of the properties of new-phase nuclei on their size.

\\EXPERT2\NBO\Journal of Physical Chemistry B\2008, v.112, p.12973.pdf
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8.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable Superheat of Argon-Helium, Argon-Neon Solutions [Text] / V. G. Baidakov, A. M. Kaverin, V. N. Andbaeva // Journal of Physical Chemistry B. - 2008. - Vol. 112, № 41. - P12973-12975
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ARGON
Аннотация: The method of lifetime measurement has been used to investigate the kinetics of spontaneous boiling-up of superheated argonhelium and argon?neon solutions. Experiments were made at a pressure of p = 1.5 MPa and concentrations up to 0.33 mol% in the range of nucleation rates from 104 to 108 s1 m3. The homogeneous nucleation regime has been distinguished. With good agreement between experimental data and homogeneous nucleation theory in temperature and concentration dependences of the nucleation rate, a systematic underestimation by 0.250.34 K has been revealed in superheat temperatures over the saturated line attained by experiment as compared with theoretical values calculated in a macroscopic approximation. The revealed disagreement between theory and experiment is connected with the dependence of the properties of new-phase nuclei on their size.

\\EXPERT2\NBO\Journal of Physical Chemistry B\2008, v.112, p.12973.pdf
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9.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable superheating of liquefied gases and their solutions (Review Article) [Electronic resource] / V. G. Baidakov // Low Temperature Physics . - 2013. - Vol.39, №8. - P643-664. - Bibliogr. : p. 663-664 (80 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
KINETICS -- BOILING-UP -- QUANTUM NUCLEATION
Аннотация: This review addresses the kinetics of spontaneous boiling-up of liquefied gases and their solutions. It discusses the theories of thermal and quantum nucleation in metastable liquids. The experimental methods for studying the nucleation kinetics are outlined. The experimental data on the attainable superheating temperature for cryogenic liquids and solutions of liquefied gases are presented in a wide range of pressures, including negative ones. The properties of new-phase nuclei near the boundary of attainable superheating are discussed. The kinetics of initiated and heterogeneous nucleation is considered. The experimental data on detection of quantum tunneling of nuclei are presented. The experimental data are compared with the theories of thermal and quantum nucleation

\\\\expert2\\NBO\\Low Temperature Physics\\2013, v.39, N 8, p.643-664.pdf
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10.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable superheating of liquefied gases and their solutions (Review Article) [Electronic resource] / V. G. Baidakov // Low Temperature Physics . - 2013. - Vol.39, №8. - P643-664. - Bibliogr. : p. 663-664 (80 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
KINETICS -- BOILING-UP -- QUANTUM NUCLEATION
Аннотация: This review addresses the kinetics of spontaneous boiling-up of liquefied gases and their solutions. It discusses the theories of thermal and quantum nucleation in metastable liquids. The experimental methods for studying the nucleation kinetics are outlined. The experimental data on the attainable superheating temperature for cryogenic liquids and solutions of liquefied gases are presented in a wide range of pressures, including negative ones. The properties of new-phase nuclei near the boundary of attainable superheating are discussed. The kinetics of initiated and heterogeneous nucleation is considered. The experimental data on detection of quantum tunneling of nuclei are presented. The experimental data are compared with the theories of thermal and quantum nucleation

\\\\expert2\\NBO\\Low Temperature Physics\\2013, v.39, N 8, p.643-664.pdf
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11.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable superheating of liquefied gases and their solutions : review [Electronic resource] / V. G. Baidakov // Fizika Nizkikh Temperatur. - 2013. - Vol.39, №8. - P835-862. - Bibliogr. : p. 861-862 (87 ref)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CAVITATION -- CRYOGENIC LIQUIDS -- META-STABLE STATE
Аннотация: The review is mainly concerned with the kinetics of spontaneous boiling-up of liquefied gases and their solutions. It examines the theories of thermofluctuation and quantum nucleation in metastable liquids. The methods of experimental investigation of nucleation kinetics are given. The experimental data on temperature of attainable superheating of cryogenic liquids and solutions of liquefied gases are presented for a wide range of pressures, including negative ones. The properties of new-phase nuclei near the attainable super-heating boundary are discussed. The kinetics of initiated and heterogeneous nucleation is considered. The experimental data on detection of quantum tunneling of nuclei are given. Experimental data are compared with the theories of thermofluctuation and quantum nucleation

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12.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable superheating of liquefied gases and their solutions : review [Electronic resource] / V. G. Baidakov // Fizika Nizkikh Temperatur. - 2013. - Vol.39, №8. - P835-862. - Bibliogr. : p. 861-862 (87 ref)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
CAVITATION -- CRYOGENIC LIQUIDS -- META-STABLE STATE
Аннотация: The review is mainly concerned with the kinetics of spontaneous boiling-up of liquefied gases and their solutions. It examines the theories of thermofluctuation and quantum nucleation in metastable liquids. The methods of experimental investigation of nucleation kinetics are given. The experimental data on temperature of attainable superheating of cryogenic liquids and solutions of liquefied gases are presented for a wide range of pressures, including negative ones. The properties of new-phase nuclei near the attainable super-heating boundary are discussed. The kinetics of initiated and heterogeneous nucleation is considered. The experimental data on detection of quantum tunneling of nuclei are given. Experimental data are compared with the theories of thermofluctuation and quantum nucleation

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13.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable Superheating of Liquid Helium–Oxygen Solutions / V. G. Baidakov, A. M. Kaverin // High Temperature. - 2000. - Vol.38, №6. - С. 852-859
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATION -- THEORY OF HOMOGENEOUS NUCLEATION -- BOILING
Аннотация: The results are given of experimental investigations of the kinetics of nucleation in gas-saturated helium-oxygen solutions. The temperature dependences of the mean lifetime of solution in the metastable (superheated) state are determined for fixed values of pressure of 1.171 and 1.667 MPa and for several values of concentration. The experimental data are compared with the theory of homogeneous nucleation in a macroscopic approximation with due regard for the dependence of the properties of the nuclei on their size. The dimensional effect is included within van der Waals' gradient expansion. The problems associated with the construction of the kinetic theory of boiling of gas-saturated solutions are discussed, and good agreement is ascertained between the experimental data and the theory of nucleation when the latter includes the dimensional effect

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14.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable Superheating of Liquid Helium–Oxygen Solutions / V. G. Baidakov, A. M. Kaverin // High Temperature. - 2000. - Vol.38, №6. - С. 852-859
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATION -- THEORY OF HOMOGENEOUS NUCLEATION -- BOILING
Аннотация: The results are given of experimental investigations of the kinetics of nucleation in gas-saturated helium-oxygen solutions. The temperature dependences of the mean lifetime of solution in the metastable (superheated) state are determined for fixed values of pressure of 1.171 and 1.667 MPa and for several values of concentration. The experimental data are compared with the theory of homogeneous nucleation in a macroscopic approximation with due regard for the dependence of the properties of the nuclei on their size. The dimensional effect is included within van der Waals' gradient expansion. The problems associated with the construction of the kinetic theory of boiling of gas-saturated solutions are discussed, and good agreement is ascertained between the experimental data and the theory of nucleation when the latter includes the dimensional effect

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15.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable superheating of solutions of cryogenic liquids / V. G. Baidakov // Journal of Engineering Thermophysics. - 2007. - Vol.16, №3. - С. 109-118
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
BOILING-UP -- CRYOGENIC LIQUIDS -- KRAMERS-ZELDOVICH METHOD
Аннотация: The kinetics of spontaneous boiling-up of superheated binary solutions of cryogenic liquids is studied. Within the framework of the Kramers-Zeldovich method, an expression is obtained for the steady state rate of homogeneous nucleation in a solution that takes into account free-molecular and diffusion regimes of the substance supply to a growing bubble. Viscous and inertial forces are also taken into account in the study of the nucleus growth dynamics. The work of critical nucleus formation is determined within the framework of the Gibbs and van der Waals capillarity theories. The dependence of the surface tension of critical bubbles in the solution on their size is investigated. The temperature of attainable superheating and nucleation rates in superheated solutions of cryogenic liquids with complete or partial solubility of the components are determined by a method of lifetime measurement. The experiments were conducted in a wide range of pressures and solution concentrations. The measurement results are compared with the theory of homogeneous nucleation taking or not taking into account the size effect in nucleation. It has been found that, by taking into account the size dependence of the surface tension of a nucleus, better agreement between the theory and experiment is obtained. The boundary of essential instability of the solution, that is, the diffusion spinodal, is computed

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16.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Attainable superheating of solutions of cryogenic liquids / V. G. Baidakov // Journal of Engineering Thermophysics. - 2007. - Vol.16, №3. - С. 109-118
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
BOILING-UP -- CRYOGENIC LIQUIDS -- KRAMERS-ZELDOVICH METHOD
Аннотация: The kinetics of spontaneous boiling-up of superheated binary solutions of cryogenic liquids is studied. Within the framework of the Kramers-Zeldovich method, an expression is obtained for the steady state rate of homogeneous nucleation in a solution that takes into account free-molecular and diffusion regimes of the substance supply to a growing bubble. Viscous and inertial forces are also taken into account in the study of the nucleus growth dynamics. The work of critical nucleus formation is determined within the framework of the Gibbs and van der Waals capillarity theories. The dependence of the surface tension of critical bubbles in the solution on their size is investigated. The temperature of attainable superheating and nucleation rates in superheated solutions of cryogenic liquids with complete or partial solubility of the components are determined by a method of lifetime measurement. The experiments were conducted in a wide range of pressures and solution concentrations. The measurement results are compared with the theory of homogeneous nucleation taking or not taking into account the size effect in nucleation. It has been found that, by taking into account the size dependence of the surface tension of a nucleus, better agreement between the theory and experiment is obtained. The boundary of essential instability of the solution, that is, the diffusion spinodal, is computed

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17.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Boiling-Up Kinetics of Solutions of Cryogenic Liquids / V. G. Baidakov // Nucleation Theory and Applications. - Dubna : JINR, 2002. - С. 19-87. - Bibliogr. : p. 83-87 (77 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
BOILING-UP -- METHOD KRAMER-ZELDOVICH -- NUCLEATION KINETICS

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18.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Boiling-Up Kinetics of Solutions of Cryogenic Liquids / V. G. Baidakov // Nucleation Theory and Applications. - Dubna : JINR, 2002. - С. 19-87. - Bibliogr. : p. 83-87 (77 ref.)
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
BOILING-UP -- METHOD KRAMER-ZELDOVICH -- NUCLEATION KINETICS

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19.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Boiling-Up Kinetics of Solutions of Cryogenic Liquids / V. G. Baidakov, J. W. P. Schmelzer // Nucleation Theory and Applications. - Berlin : Wiley-VCH Verlag, 2005. - С. 126-175
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATION KINETICS -- DIFFUSION TENSOR OF NUCLEI -- NUCLEATION RATES

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20.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Boiling-Up Kinetics of Solutions of Cryogenic Liquids / V. G. Baidakov, J. W. P. Schmelzer // Nucleation Theory and Applications. - Berlin : Wiley-VCH Verlag, 2005. - С. 126-175
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
NUCLEATION KINETICS -- DIFFUSION TENSOR OF NUCLEI -- NUCLEATION RATES

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