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 Найдено в других БД:Каталог книг и продолжающихся изданий (7)Труды Института высокотемпературной электрохимии УрО РАН (7)Труды сотрудников Института органического синтеза УрО РАН (1)Труды сотрудников Института химии твердого тела УрО РАН (13)Расплавы (1)Библиометрия (1)
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Общее количество найденных документов : 82
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1.
Инвентарный номер: нет.
   
   V 70

    Vinogradov, A. V.
    Spectral Characteristics of Fluctuations in Ultrasonic Cavitation of Water and Glycerin / A. V. Vinogradov // Heat Transfer Research. - 2008. - Vol.39, №6. - С. 519-527
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
FLUCTUATION -- ACOUSTIC CAVITATION -- GLYCERIN
Аннотация: The results of experimental investigation of the dynamics of fluctuations in acoustic cavitation of water and glycerin are presented. Near the radiator surface the structures in interacting vapor-gas bubbles having the form of fractal clusters were formed. Using the method of photometric scanning of transmitted laser radiation, the dynamics of fluctuations was investigated. In the transient regime the range of the power of fluctuations changed inversely proportional to frequency. The distributions of local fluctuations differ from Gaussian ones and reveal the properties of scale invariance. The qualitative behavior of the frequency dependence of the spectral density of fluctuations on change in the power of an ultrasonic radiator was investigated. It is shown that the raise of the high-frequency boundary of the flicker behavior point to the buildup of instability and may serve as a precursor of possible large-scale overshoots

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2.
Инвентарный номер: нет.
   
   V 70

    Vinogradov, A. V.
    Spectral Characteristics of Fluctuations in Ultrasonic Cavitation of Water and Glycerin / A. V. Vinogradov // Heat Transfer Research. - 2008. - Vol.39, №6. - С. 519-527
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
FLUCTUATION -- ACOUSTIC CAVITATION -- GLYCERIN
Аннотация: The results of experimental investigation of the dynamics of fluctuations in acoustic cavitation of water and glycerin are presented. Near the radiator surface the structures in interacting vapor-gas bubbles having the form of fractal clusters were formed. Using the method of photometric scanning of transmitted laser radiation, the dynamics of fluctuations was investigated. In the transient regime the range of the power of fluctuations changed inversely proportional to frequency. The distributions of local fluctuations differ from Gaussian ones and reveal the properties of scale invariance. The qualitative behavior of the frequency dependence of the spectral density of fluctuations on change in the power of an ultrasonic radiator was investigated. It is shown that the raise of the high-frequency boundary of the flicker behavior point to the buildup of instability and may serve as a precursor of possible large-scale overshoots

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3.
Инвентарный номер: нет.
   
   T 82

   
    Transient behavior of superheated water jets boiling [Электронный ресурс] / A. V. Reshetnikov, K. A. Busov, N. A. Mazheiko, V. N. Skokov, V. P. Koverda // Thermophysics and Aeromtchanics. - 2012. - Vol.19, №2. - P329-336
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
1/f FLUCTUATIONS -- JET FORMS -- NUCLEATION FREQUENCY
Аннотация: Superheated water flowing out from high-pressure chamber through short cylindrical and slot channel has been studied experimentally. Relation of vaporization mechanisms in superheated liquid (boiling in single, not interacting centers, intense heterogeneous vaporization, and homogeneous fluctuating nucleation) and respective forms of superheated water jets has been determined. Temperature intervals with transient behavior of boiling have been determined. It is shown that at transient behavior of boiling the amplitude of pulsations of jet parameters increases, and in the spectra of pulsation power, the low-frequency component 1/f appears

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4.
Инвентарный номер: нет.
   
   T 82

   
    Transient behavior of superheated water jets boiling [Электронный ресурс] / A. V. Reshetnikov, K. A. Busov, N. A. Mazheiko, V. N. Skokov, V. P. Koverda // Thermophysics and Aeromtchanics. - 2012. - Vol.19, №2. - P329-336
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
1/f FLUCTUATIONS -- JET FORMS -- NUCLEATION FREQUENCY
Аннотация: Superheated water flowing out from high-pressure chamber through short cylindrical and slot channel has been studied experimentally. Relation of vaporization mechanisms in superheated liquid (boiling in single, not interacting centers, intense heterogeneous vaporization, and homogeneous fluctuating nucleation) and respective forms of superheated water jets has been determined. Temperature intervals with transient behavior of boiling have been determined. It is shown that at transient behavior of boiling the amplitude of pulsations of jet parameters increases, and in the spectra of pulsation power, the low-frequency component 1/f appears

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5.
Инвентарный номер: нет.
   
   S 81

   
    Static and dynamic stability of levitated ball above ring in MTG HTS-magnet systems / Ye. V. Postrekhin, L. W. Zhou, G. Liu, C. B. Cai, S. M. Gong, Y. X. Fu // Physica C. - 1997. - Vol.282-287, Pt.4. - С. 2649-2650
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
MAGNET SYSTEMS -- MTG -- HTS-MAGNET SYSTEMS
Аннотация: Superconducting levitating and rotating systems such as a levitated superconducting ball above a permanent ring magnet, and a levitated ball magnet above a superconducting MTG ring, have been investigated. It is shown that the dependence of the levitating force versus distance between levitated ball and ring has hysteresis and several maxima. Under AC magnetic field, the levitated ball sample oscillates stably at certain conditions. Amplitude-frequency curve has several maxima. At certain frequencies of AC magnetic field, the levitated ball begins to spin. The criteria of superconducting materials that suitable for stable gyro systems are given

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6.
Инвентарный номер: нет.
   
   S 81

   
    Static and dynamic stability of levitated ball above ring in MTG HTS-magnet systems / Ye. V. Postrekhin, L. W. Zhou, G. Liu, C. B. Cai, S. M. Gong, Y. X. Fu // Physica C. - 1997. - Vol.282-287, Pt.4. - С. 2649-2650
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
MAGNET SYSTEMS -- MTG -- HTS-MAGNET SYSTEMS
Аннотация: Superconducting levitating and rotating systems such as a levitated superconducting ball above a permanent ring magnet, and a levitated ball magnet above a superconducting MTG ring, have been investigated. It is shown that the dependence of the levitating force versus distance between levitated ball and ring has hysteresis and several maxima. Under AC magnetic field, the levitated ball sample oscillates stably at certain conditions. Amplitude-frequency curve has several maxima. At certain frequencies of AC magnetic field, the levitated ball begins to spin. The criteria of superconducting materials that suitable for stable gyro systems are given

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7.
Инвентарный номер: нет.
   
   S 68

    Smolyak, B. M.
    Influence of a variable magnetic field on the stability of the magnetic suspension of high-T-c superconductors [] / B. M. Smolyak, M. V. Babanov, G. V. Ermakov // Technical Physics. - 1997. - V.42, Is.12. - С. 1455-1456
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
FIELD VARIABLE -- FIELD MAGNETIC -- SUSPENSION MAGNETIC -- SUPERCONDUCTORS HIGH-T-C -- LEVITATION -- COLLAPSE -- AMPLITUDE CRITICAL -- FREQUENCY
Аннотация: The resonant oscillation of superconductors by a variable magnetic held during hard levitation and the collapse of levitation are investigated. The critical amplitude and the frequency of the variable held are calculated

\\\\Expert2\\NBO\\Technical Physics\\1997, v.42, N 12, p.1455.pdf
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8.
Инвентарный номер: нет.
   
   S 68

    Smolyak, B. M.
    Influence of a variable magnetic field on the stability of the magnetic suspension of high-T-c superconductors [] / B. M. Smolyak, M. V. Babanov, G. V. Ermakov // Technical Physics. - 1997. - V.42, Is.12. - С. 1455-1456
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
FIELD VARIABLE -- FIELD MAGNETIC -- SUSPENSION MAGNETIC -- SUPERCONDUCTORS HIGH-T-C -- LEVITATION -- COLLAPSE -- AMPLITUDE CRITICAL -- FREQUENCY
Аннотация: The resonant oscillation of superconductors by a variable magnetic held during hard levitation and the collapse of levitation are investigated. The critical amplitude and the frequency of the variable held are calculated

\\\\Expert2\\NBO\\Technical Physics\\1997, v.42, N 12, p.1455.pdf
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9.
Инвентарный номер: нет.
   
   S 68

    Smolyak, B. M.
    The effect of ac magnetic fields on the lifting power of levitating superconductors / B. M. Smolyak, G. V. Ermakov, L. I. Chubraeva // Superconductor Science and Technology. - 2007. - Vol.20, №4. - С. 406-411
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LEVITATION FORCE -- SUPERCONDUCTING SUSPENSION -- LIFTING FORCE
Аннотация: This study deals with the decrease in the levitation force under the action of an ac field up to the frequency at which oscillations of the superconducting suspension are limited by inertia. The lifting force was measured as a function of the ac field amplitude and the exposure time. It was shown that the force quickly decreased at the moment the ac field was applied and then continued diminishing, but at a lower rate. A qualitative model was proposed, taking into account two effects of the ac field on the magnetization of the levitating superconductor: a complete destruction of the critical state in some section of the superconductor (to a depth λac) and the initiation of a faster magnetic relaxation in the region where the induction gradient is preserved

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10.
Инвентарный номер: нет.
   
   S 68

    Smolyak, B. M.
    The effect of ac magnetic fields on the lifting power of levitating superconductors / B. M. Smolyak, G. V. Ermakov, L. I. Chubraeva // Superconductor Science and Technology. - 2007. - Vol.20, №4. - С. 406-411
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LEVITATION FORCE -- SUPERCONDUCTING SUSPENSION -- LIFTING FORCE
Аннотация: This study deals with the decrease in the levitation force under the action of an ac field up to the frequency at which oscillations of the superconducting suspension are limited by inertia. The lifting force was measured as a function of the ac field amplitude and the exposure time. It was shown that the force quickly decreased at the moment the ac field was applied and then continued diminishing, but at a lower rate. A qualitative model was proposed, taking into account two effects of the ac field on the magnetization of the levitating superconductor: a complete destruction of the critical state in some section of the superconductor (to a depth λac) and the initiation of a faster magnetic relaxation in the region where the induction gradient is preserved

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