Researching of acoustic waves in plasma-liquid system with pulsed discharge
The research results of acoustic signals generation by microsecond pulse discharger in cylindrical plasma-liquid system are presented. It was investigated that the gas dissolved in liquid and the duration of electrolysis phase have influence on the amplitude of the acoustic signals. The cylinder rad...
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| Опубліковано в: : | Вопросы атомной науки и техники |
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| Дата: | 2015 |
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2015
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| Цитувати: | Researching of acoustic waves in plasma-liquid system with pulsed discharge / V.V. Iukhymenko, V.O. Shapoval, V.Ya. Chernyak, E.V. Martysh, O.A. Fedorovich, M.Yu. Tolstyh // Вопросы атомной науки и техники. — 2015. — № 1. — С. 194-196. — Бібліогр.: 2 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1859639685688590336 |
|---|---|
| author | Iukhymenko, V.V. Shapoval, V.O. Chernyak, V.Ya. Martysh, E.V. Fedorovich, O.A. Tolstyh, M.Yu. |
| author_facet | Iukhymenko, V.V. Shapoval, V.O. Chernyak, V.Ya. Martysh, E.V. Fedorovich, O.A. Tolstyh, M.Yu. |
| citation_txt | Researching of acoustic waves in plasma-liquid system with pulsed discharge / V.V. Iukhymenko, V.O. Shapoval, V.Ya. Chernyak, E.V. Martysh, O.A. Fedorovich, M.Yu. Tolstyh // Вопросы атомной науки и техники. — 2015. — № 1. — С. 194-196. — Бібліогр.: 2 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | The research results of acoustic signals generation by microsecond pulse discharger in cylindrical plasma-liquid system are presented. It was investigated that the gas dissolved in liquid and the duration of electrolysis phase have influence on the amplitude of the acoustic signals. The cylinder radius and height were 135 and 10 mm respectively. Discharge was generated between two electrodes located on the cylinder axis.
Представлены результаты исследования генерации акустических сигналов импульсным разрядом микросекундной длительности в плазменно-жидкостной системе цилиндрической геометрии. Исследовалось влияние газа в жидкости и длительности фазы электролиза на амплитуду акустических сигналов. Радиус цилиндра 135 мм, высота 10 мм. Разряд генерировался между двумя электродами, расположенными на оси цилиндра.
Представлено результати дослідження генерації акустичних сигналів імпульсним розрядом мікросекундної тривалості в плазмово-рідинній системі циліндричної геометрії. Досліджувався вплив газу в рідині та тривалості фази електролізу на амплітуду акустичних сигналів. Радіус циліндру 135 мм, висота 10 мм. Розряд генерувався між двома електродами, розташованими на вісі циліндру.
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| first_indexed | 2025-12-07T13:20:57Z |
| format | Article |
| fulltext |
ISSN 1562-6016. ВАНТ. 2015. №1(95)
194 PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. 2015, № 1. Series: Plasma Physics (21), p. 194-196.
RESEARCHING OF ACOUSTIC WAVES IN PLASMA-LIQUID SYSTEM
WITH PULSED DISCHARGE
V.V. Iukhymenko
1
, V.O. Shapoval
1
, V.Ya. Chernyak
1
, E.V. Martysh
1
, O.A. Fedorovich
2
,
M.Yu. Tolstyh
2
1
Taras Shevchenko National University of Kyiv, Ukraine;
2
Institute for Nuclear Research of National Academy of Sciences of Ukraine, Kyiv, Ukraine
E-mail: yvitaliy@ukr.net, chernyak_v@ukr.net
The research results of acoustic signals generation by microsecond pulse discharger in cylindrical plasma-liquid
system are presented. It was investigated that the gas dissolved in liquid and the duration of electrolysis phase have
influence on the amplitude of the acoustic signals. The cylinder radius and height were 135 and 10 mm respectively.
Discharge was generated between two electrodes located on the cylinder axis.
PACS: 50., 52., 52.50.Dg
INTRODUCTION
Plasma chemistry consider plasma as a chemical
active medium, which activity is provided by high
temperatures and high concentrations of reactive
components. The price for such high plasma activity is a
low selectivity of plasma-chemical transformations.
The need for increasing the plasma chemistry
selectivity becomes stronger by the transition from
chemical industry to "green chemistry". The chemical
yield effectiveness is evaluated at this new conception
as the exclusion of hazardous waste and using of non-
toxic substances [1].
The processes in supercritical fluids have
perspectives in motion towards green chemistry. Water
mixes unlimitedly in supercritical condition with
oxygen, hydrogen and hydrocarbons, facilitating their
interaction with each other – oxidation reactions are
very fast in supercritical water (H2Osc). One of the most
interesting supercritical water applications is effective
chemical warfare agents decomposition [2]. These
supercritical conditions in liquids can be created in
plasma-liquid systems with pulsed discharge. The
pulsed electrical discharge in the liquid comes up with
new related factors: strong ultraviolet radiation and
presence of acoustic or shock waves. In addition,
acoustic oscillations can be used in such systems as an
additional mechanism of action for chemical
transformations.
Perhaps the most promising method of using
acoustic waves is their generation by axial pulsed
electric discharge with following reflection from a
perfect cylindrical surface, which can provide better
compression symmetry for convergent acoustic waves,
in the gas and liquid phases. This work is devoted to
such approach investigation.
1. EXPERIMENTAL SET-UP
The experimental set-up schematic in Fig. 1 is
shown. The main part of the system is cylinder with
height H = 10 mm and radius R = 135 mm. The cylinder
is filled with distilled water (1) as a working liquid. The
electrodes (2) are placed perpendicular to the cylinder
axis. These electrodes are made of copper with diameter
10 mm and have the conical shape. Discharge (3)
between electrodes is ignited. The piezoceramic
pressure sensor (4) is installed at 40 mm distance from
the cylinder lateral surface and registers acoustic wave
formed due to electric discharge. The cylinder (5) wall
thickness is 50 mm.
Fig. 1. Plasma-liquid system with a pulse discharge:
1 – liquid; 2 – electrodes; 3 – discharge;
4 – piezoceramic pressure sensor; 5 – cylinder wall
Researches were carried out for discharge current
and acoustic signal (first and second reflected acoustic
waves) depending on accumulated energy in the
capacitor, the angle of system inclination and gas
presence in the liquid.
Capacitor bank has a constant capacitance of
C = 67.5 nF. The charged capacitor energy was varied
by charging voltage. Voltage varied in the range from
20 to 70 kV. Energy changed in range from 13.5 to
165 J respectively. The Rogowski coil for current
measuring was used. In each experiment 6
measurements for statistics were performed.
ISSN 1562-6016. ВАНТ. 2015. №1(95) 195
2. RESULTS AND DISCUSSION
The electrolysis phase is always presented in
plasma-liquid systems during pulsed discharges study.
If this phase is continued long enough the most energy
is dissipated, so the energy per pulse is reduced. This
leads to the fact that the second acoustic signal wave
diverging significantly less than the first and the
amplitude of the first acoustic wave becomes smaller.
The long electrolysis phase duration is, probably,
due to the large electrodes surface contact with liquid.
Duration of electrolysis phase also depends on the liquid
conductivity and dissolved gases in it. The performed
research deals with these factors impact on acoustic
signals which is generated in the system (convergent
and divergent acoustic waves).
The conical shape electrodes were used for reducing
of surface contact with liquid. The increasing of
distance between the electrodes is also possible at this
condition. The discharge current and the acoustic signal
forms for these electrodes are shown at Fig. 2 (the
distance between the electrodes is 1.5 mm, the capacitor
voltage is 35 kV).
Fig. 2. Oscillograms of current (a) and acoustic
signal (b) (1 first divergent acoustic wave; 2 second
divergent acoustic wave), d = 1.5 mm, U = 35 kV,
C = 67.5 nF, distillate, cylinder positioned an angle 67°
Electrodes geometry change gave results. The
electrolysis phase duration became commensurate to the
current pulse duration (less energy is dissipated
uselessly). But the second divergent acoustic wave
amplitude remained small.
The usage of distilled water as a working liquid with
a low content of dissolved gases was next step for
increasing the amplitude of the second acoustic wave.
The discharge current and the acoustic signal forms are
shown on Fig. 3 for cone shape electrodes and distilled
water with a low content of dissolved gases. Distance
between electrodes – 1.5 mm, the capacitor voltage –
35 kV.
Using the distilled water with a low content of
dissolved gases was able to get a second acoustic splash
with larger amplitude. However, the amplitude of the
second acoustic wave is still smaller than the amplitude
of the first one.
Fig. 3. Oscillograms of current (a) and acoustic
signal (b) (1 first divergent acoustic wave; 2 second
divergent acoustic wave), d = 1.5 mm, U = 35 kV,
C = 67.5 nF, distilled water with a low content of
dissolved gases, cylinder positioned an angle 67°
This can be explained by the fact that large amount
of gas is released during the generation of pulsed
discharges in plasma-liquid systems. The first
convergent and second divergent acoustic waves
propagation front is discomposed by this gas. As a
result, the amplitude of the second acoustic wave is less
than the first one.
Fig. 4. Oscillograms of current (a) and acoustic signal
(b) (1 first divergent acoustic wave; 2 second
divergent acoustic wave), d = 1.5 mm, U = 40 kV,
C = 67.5 nF, distilled water with a low content of
dissolved gases, cylinder in a horizontal position
Fig. 5. Oscillograms of current (a) and acoustic signal
(b) (1 first divergent acoustic wave; 2 − second
divergent acoustic wave), d = 1.5 mm, U = 40 kV,
C = 67.5 nF, distilled water with a low content of
dissolved gases, cylinder positioned an angle 45°
1 2
a
b
1 2
a
b
1 2
a
b
1 2
a
b
196 ISSN 1562-6016. ВАНТ. 2015. №1(95)
To avoid the negative impact of the gas produced in
the system the approach to come it out have to be used.
First experiments were carried out at 67 system
inclination angle to avoid the cavities with air when
system was filled by liquid. The series of experiments
were carried out to determine the optimum inclination
angle and provide the best outlet for generated gas.
Measuring was carried out (Figs. 4-6) for acoustic
signals in the plasma-liquid system of cylindrical
geometry depending on the system inclination angle.
Fig.6. Oscillograms of current (a) and acoustic signal
(b) (1 first divergent acoustic wave; 2 second
divergent acoustic wave), d = 1.5 mm, U = 40 kV,
C = 67.5 nF, distillate with a low content of dissolved
gases, cylinder positioned an angle 90°
Current and acoustic signals oscillograms were
measured at 40 kV charging voltage and distance
between electrodes of 1.5 mm. It is clear from the
presented results that the largest amplitude of the second
divergent acoustic wave is reached at a vertical location
of the cylindrical system. At such system position there
was a possibly to obtain the amplitude of the second
acoustic wave even bigger than the amplitude of the
first acoustic wave.
CONCLUSIONS
1. Electrolysis does not influence on amplitude of the
divergent acoustic waves if electrolysis phase duration
is comparable to current pulse duration.
2. The first and second acoustic wave amplitudes are the
same when distilled water with a low content of
dissolved gases is used as working liquid and plasma-
liquid system with cylindrical geometry has the vertical
position.
ACKNOWLEDGEMENTS
This work was partially supported by Ministry of
Education and Science of Ukraine, National Academy
of Sciences of Ukraine, Taras Shevchenko National
University of Kyiv.
REFERENCES
1. R.A.C. Sheldon. Catalytic conversions in water and
supercritical carbon dioxide from the perspective of
sustainable development // Russian Chemical Journal.
2004, v. 48, № 6, p. 74-83.
2. R.W. Shaw. Modelling the design and operation of
reactors for chemical weapon agent destruction // Abstr.
of the CB MTS IV, Spiez, 28 Apr.-05 May, ASA. 2002,
p. 44.
Article received 10.10.2014
ИССЛЕДОВАНИЕ АКУСТИЧЕСКИХ ВОЛН В ПЛАЗМЕННО-ЖИДКОСТНОЙ СИСТЕМЕ
С ИМПУЛЬСНЫМ РАЗРЯДОМ
В.В. Юхименко, В.А. Шаповал, В.Я. Черняк, Е.В. Мартыш, О.А. Федорович, М.Ю. Толстых
Представлены результаты исследования генерации акустических сигналов импульсным разрядом
микросекундной длительности в плазменно-жидкостной системе цилиндрической геометрии. Исследовалось
влияние газа в жидкости и длительности фазы электролиза на амплитуду акустических сигналов. Радиус
цилиндра 135 мм, высота 10 мм. Разряд генерировался между двумя электродами, расположенными на оси
цилиндра.
ДОСЛІДЖЕННЯ АКУСТИЧНИХ ХВИЛЬ В ПЛАЗМОВО-РІДИННІЙ СИСТЕМІ З ІМПУЛЬСНИМ
РОЗРЯДОМ
В.В. Юхименко, В.О. Шаповал, В.Я. Черняк, Є.В. Мартиш, О.А. Федорович, М.Ю. Толстих
Представлено результати дослідження генерації акустичних сигналів імпульсним розрядом
мікросекундної тривалості в плазмово-рідинній системі циліндричної геометрії. Досліджувався вплив газу в
рідині та тривалості фази електролізу на амплітуду акустичних сигналів. Радіус циліндру 135 мм, висота
10 мм. Розряд генерувався між двома електродами, розташованими на вісі циліндру.
1
2
a
b
|
| id | nasplib_isofts_kiev_ua-123456789-82237 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-07T13:20:57Z |
| publishDate | 2015 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Iukhymenko, V.V. Shapoval, V.O. Chernyak, V.Ya. Martysh, E.V. Fedorovich, O.A. Tolstyh, M.Yu. 2015-05-27T04:55:42Z 2015-05-27T04:55:42Z 2015 Researching of acoustic waves in plasma-liquid system with pulsed discharge / V.V. Iukhymenko, V.O. Shapoval, V.Ya. Chernyak, E.V. Martysh, O.A. Fedorovich, M.Yu. Tolstyh // Вопросы атомной науки и техники. — 2015. — № 1. — С. 194-196. — Бібліогр.: 2 назв. — англ. 1562-6016 PACS: 50., 52., 52.50.Dg https://nasplib.isofts.kiev.ua/handle/123456789/82237 The research results of acoustic signals generation by microsecond pulse discharger in cylindrical plasma-liquid system are presented. It was investigated that the gas dissolved in liquid and the duration of electrolysis phase have influence on the amplitude of the acoustic signals. The cylinder radius and height were 135 and 10 mm respectively. Discharge was generated between two electrodes located on the cylinder axis. Представлены результаты исследования генерации акустических сигналов импульсным разрядом микросекундной длительности в плазменно-жидкостной системе цилиндрической геометрии. Исследовалось влияние газа в жидкости и длительности фазы электролиза на амплитуду акустических сигналов. Радиус цилиндра 135 мм, высота 10 мм. Разряд генерировался между двумя электродами, расположенными на оси цилиндра. Представлено результати дослідження генерації акустичних сигналів імпульсним розрядом мікросекундної тривалості в плазмово-рідинній системі циліндричної геометрії. Досліджувався вплив газу в рідині та тривалості фази електролізу на амплітуду акустичних сигналів. Радіус циліндру 135 мм, висота 10 мм. Розряд генерувався між двома електродами, розташованими на вісі циліндру. This work was partially supported by Ministry of Education and Science of Ukraine, National Academy of Sciences of Ukraine, Taras Shevchenko National University of Kyiv. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники Низкотемпературная плазма и плазменные технологии Researching of acoustic waves in plasma-liquid system with pulsed discharge Исследование акустических волн в плазменно-жидкостной системе Дослідження акустичних хвиль в плазмово-рідинній системі з імпульсним розрядом Article published earlier |
| spellingShingle | Researching of acoustic waves in plasma-liquid system with pulsed discharge Iukhymenko, V.V. Shapoval, V.O. Chernyak, V.Ya. Martysh, E.V. Fedorovich, O.A. Tolstyh, M.Yu. Низкотемпературная плазма и плазменные технологии |
| title | Researching of acoustic waves in plasma-liquid system with pulsed discharge |
| title_alt | Исследование акустических волн в плазменно-жидкостной системе Дослідження акустичних хвиль в плазмово-рідинній системі з імпульсним розрядом |
| title_full | Researching of acoustic waves in plasma-liquid system with pulsed discharge |
| title_fullStr | Researching of acoustic waves in plasma-liquid system with pulsed discharge |
| title_full_unstemmed | Researching of acoustic waves in plasma-liquid system with pulsed discharge |
| title_short | Researching of acoustic waves in plasma-liquid system with pulsed discharge |
| title_sort | researching of acoustic waves in plasma-liquid system with pulsed discharge |
| topic | Низкотемпературная плазма и плазменные технологии |
| topic_facet | Низкотемпературная плазма и плазменные технологии |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/82237 |
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