1. |
Kiełczyński P., Ptasznik S.♦, Szalewski M.♦, Balcerzak A., Wieja K., Rostocki A.J.♦, Application of ultrasonic methods for evaluation of high-pressure physicochemical parameters of liquids,
ARCHIVES OF ACOUSTICS, ISSN: 0137-5075, DOI: 10.24425/aoa.2019.128496, Vol.44, No.2, pp.329-337, 2019Abstract: An emerging ultrasonic technology aims to control high-pressure industrial processes that use liquids at pressures up to 800 MPa. To control these processes it is necessary to know precisely physicochemical properties of the processed liquid (e.g., Camelina sativa oil) in the high-pressure range. In recent years, Camelina sativa oil gained a significant interest in food and biofuel industries. Unfortunately, only a very few data characterizing the high-pressure behavior of Camelina sativa oil is available. The aim of this paper is to investigate high pressure physicochemical properties of liquids on the example of Camelina sativa oil, using efficient ultrasonic techniques, i.e., speed of sound measurements supported by parallel measurements of density. It is worth noting that conventional low-pressure methods of measuring physicochemical properties of liquids fail at high pressures. The time of flight (TOF) between the two selected ultrasonic impulses was evaluated with a cross-correlation method. TOF measurements enabled for determination of the speed of sound with very high precision (of the order of picoseconds). Ultrasonic velocity and density measurements were performed for pressures 0.1–660 MPa, and temperatures 3–30 °C. Isotherms of acoustic impedance Za, surface tension σ and thermal conductivity k were subsequently evaluated. These physicochemical parameters of Camelina sativa oil are mainly influenced by changes in the pressure p, i.e., they increase about two times when the pressure increases from atmospheric pressure (0.1 MPa) to 660 MPa at 30 °C. The results obtained in this study are novel and can be applied in food,and chemical industries. Keywords: ultrasonic methods, speed of sound, acoustic impedance, surface tension, thermal conductivity, physicochemical properties Affiliations:
Kiełczyński P. | - | IPPT PAN | Ptasznik S. | - | Air Force Institute of Technology (PL) | Szalewski M. | - | other affiliation | Balcerzak A. | - | IPPT PAN | Wieja K. | - | IPPT PAN | Rostocki A.J. | - | Warsaw University of Technology (PL) |
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2. |
Kiełczyński P., Szalewski M.♦, Balcerzak A., Wieja K., Rostocki A.♦, Ptasznik S.♦, Evaluation of High-Pressure Thermophysical Parameters of the Diacylglycerol (DAG) Oil Using Ultrasonic Waves,
Food and Bioprocess Technology, ISSN: 1935-5130, DOI: 10.1007/s11947-016-1827-6, Vol.10, No.2, pp.358-369, 2017Abstract: Modeling of high-pressure technological processes in the food industry requires knowledge of thermophysical parameters of processed foodstuffs in a broad range of pressures and temperatures. However, the high-pressure thermophysical parameters of foodstuffs are very rarely published in the literature. Therefore, further research is necessary to achieve a deeper insight into the biophysical and thermophysical phenomena under pressure to provide better control of technological processes and optimize the effects of pressure. The essential goal of this work is to evaluate the impact of high pressure and temperature on the thermophysical parameters of liquid foodstuffs on the example of diacylglycerol (DAG) oil (which attracted recently a considerable attention from research and industrial communities due to its remarkable benefits for health), using ultrasonic wave velocity and density measurements. Isotherms of adiabatic and isothermal compressibility, isobaric thermal expansion coefficient, internal pressure, and thermal pressure coefficient versus pressure were evaluated, based on the measurement of the compressional ultrasonic wave velocity and density of DAG oil at high pressures (up to 500 MPa) and at various temperatures. The adiabatic compressibility is affected mostly by the changes of pressure, i.e., it grows about four times when the pressure increases from the atmospheric pressure (0.1 MPa) to 400 MPa at a temperature of 50 °C. By contrast, the internal pressure is a pronounced function of the temperature, i.e., it increases six times when the temperature rises from 20 to 50 °C at a pressure of a 200 MPa. To perform numerical calculations, it was convenient to introduce a Tammann–Tait type equation of state to approximate the measured density isotherms of the investigated DAG oil. The results obtained in this paper can be applied in modeling and optimization of high-pressure technological processes and processing of foodstuffs. Evaluation of high-pressure isotherms of the considered thermophysical parameters of the DAG oil is an original authors' contribution to the state-of-the-art. Keywords: high-pressure food processing, diacylglycerols, thermophysical parameters, isothermal compressibility, isobaric thermal expansion coefficient, ultrasonic methods Affiliations:
Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | other affiliation | Balcerzak A. | - | IPPT PAN | Wieja K. | - | IPPT PAN | Rostocki A. | - | Warsaw University of Technology (PL) | Ptasznik S. | - | Air Force Institute of Technology (PL) |
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3. |
Kiełczyński P., Ptasznik S.♦, Szalewski M.♦, Balcerzak A., Wieja K., Rostocki A.J.♦, Thermophysical properties of rapeseed oil methyl esters (RME) at high pressures and various temperatures evaluated by ultrasonic methods,
Biomass and Bioenergy, ISSN: 0961-9534, DOI: 10.1016/j.biombioe.2017.09.015, Vol.107, pp.113-121, 2017Abstract: Investigation of the high-pressure thermophysical properties of biofuels, e.g., bulk modulus, Surface tension, and viscosity is of paramount importance in fuel injection systems in diesel engines. Another crucial and dangerous phenomenon that may occur in biofuels at high pressures is phase transition (solidification), which can drastically increase the viscosity of the biofuel. This effect may hamper proper operation of the engine, especially under cold-start conditions. Unfortunately, the availability of highpressure thermophysical properties of biofuels is still limited. The goal of this paper is to investigate the impact of high pressures on thermophysical properties of biofuels on the example of rapeseed fatty acid methyl esters (RME) in a wide range of pressures (0:1 to 250 MPa) and temperatures (5 to 20 _C). To this end we employed innovative ultrasonic techniques, i.e., the Bleustein-Gulyaev surface acoustic waves for measuring RME viscosity, and ultrasonic bulk compressional waves for measuring sound velocity in RME and consequently evaluating RME thermophysical parameters, e.g., bulk modulus and surface tension. The viscosity of the measured RME displayed an abrupt increase at pressures: 260 MPa (t Ľ 20 _C), 230 MPa (t Ľ 15 _C), 190 MPa (t Ľ 10 _C), and 130 MPa (t Ľ 5 _C). Evidently it was a signature of the phase transition (solidification) occurring in the RME. The discovered high viscosity high-pressure phase in RME can be very detrimental for operation of modern common rail Diesel engines. Therefore, the results of research presented in this paper should be interesting for engineers and designers working with modern common rail Diesel engines using biofuels. Keywords: Biofuels, Methyl esters, Phase transitions, Viscosity, Speed of sound, Ultrasonic methods, High pressure Affiliations:
Kiełczyński P. | - | IPPT PAN | Ptasznik S. | - | Air Force Institute of Technology (PL) | Szalewski M. | - | other affiliation | Balcerzak A. | - | IPPT PAN | Wieja K. | - | IPPT PAN | Rostocki A.J. | - | Warsaw University of Technology (PL) |
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4. |
Kiełczyński P., Szalewski M., Balcerzak A., Wieja K., Rostocki A.J.♦, Siegoczyński R.M.♦, Ultrasonic Evaluation of Thermodynamic Parameters of Liquids Under High Pressure,
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, ISSN: 0885-3010, DOI: 10.1109/TUFFC.2015.007053, Vol.62, No.6, pp.1122-1131, 2015Abstract: In many technological processes (e.g., in the chemical, petrochemical, food, and plastics industries), liquids are subjected to high pressures and temperatures. Therefore, knowledge of their thermodynamic properties is essential for understanding, design, and control of the process technology. Direct evaluation of the thermodynamic parameters of liquids under high pressure, using conventional methods, is very difficult. Therefore, the application of these methods in industrial conditions, particularly in on-line control of the technological parameters of liquids, is practically impossible. Ultrasonic methods (e.g., sound speed measurements) are very suitable for this purpose because of their simplicity and accuracy. The sound velocity is closely related to numerous thermodynamic properties of liquids. The objective of this paper is to address the influence of temperature and pressure on the thermodynamic parameters of liquids, using the example of diacylglycerol (DAG) oil, employing ultrasonic methods. In this paper, we present ultrasonic velocity and density measurements (performed by the authors) in DAG oil over a range of pressures and temperatures. On the basis of experimental results (the sound velocity and liquid density versus pressure and temperature) a series of DAG oil thermodynamic parameters such as specific heat ratio, intermolecular free path length, Van der Waals constant b, surface tension, and effective Debye temperature were evaluated as functions of pressure and temperature. Keywords: Thermodynamical properties of liquid, High pressure food processing, ultrasonic methods, sound velocity, surface tension Affiliations:
Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | IPPT PAN | Balcerzak A. | - | IPPT PAN | Wieja K. | - | IPPT PAN | Rostocki A.J. | - | Warsaw University of Technology (PL) | Siegoczyński R.M. | - | Warsaw University of Technology (PL) |
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5. |
Kiełczyński P., Szalewski M., Balcerzak A., Wieja K., Rostocki A.J.♦, Siegoczyński R.M.♦, Ptasznik S.♦, Application of ultrasonic wave celerity measurement for evaluation of physicochemical properties of olive oil at high pressure and various temperatures,
LWT-FOOD SCIENCE AND TECHNOLOGY, ISSN: 0023-6438, DOI: 10.1016/j.lwt.2014.01.027, Vol.57, pp.253-259, 2014Abstract: High-pressure processing is a powerful technology for food preservation. The knowledge of foods properties in the high-pressure range is important to develop and optimize such processes by means of mathematical modeling and simulation. Ultrasonic methods are rapid, non-invasive and can be used to characterize foods like edible oils (e.g., composition, purity, and quality assessment). In this paper, they were applied for the investigation of physicochemical properties of olive oil at high pressure at different temperatures. The sound wave velocity was measured by the pulse-transmission method and the corresponding oil density was additionally determined from the monitoring of sample volume change. Measurements were conducted in the pressure range up to 600 MPa, for temperatures from 20 to 50°C. Intermolecular free length, isothermal and adiabatic compressibility versus pressure were calculated using measured sound speed and density isotherms. Discontinuities in the measured isotherms of sound speed and density versus pressure indicate the presence of liquid-to-solid phase transitions. The kinetics of the liquid-to-solid phase transition was also investigated. The transformation times of olive oil augment with increasing temperature. This study can be broadened to other liquid foodstuffs to investigate the influence of temperature on their physicochemical properties at high pressure. Keywords: Physicochemical properties, Intermolecular free length, Ultrasonic velocity, High-pressure food processing, Olive oils Affiliations:
Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | IPPT PAN | Balcerzak A. | - | IPPT PAN | Wieja K. | - | IPPT PAN | Rostocki A.J. | - | Warsaw University of Technology (PL) | Siegoczyński R.M. | - | Warsaw University of Technology (PL) | Ptasznik S. | - | Air Force Institute of Technology (PL) |
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6. |
Kiełczyński P., Szalewski M., Balcerzak A., Wieja K., Malanowski A.♦, Kościesza R.♦, Tarakowski R.♦, Rostocki A.J.♦, Siegoczyński R.M.♦, Determination of physicochemical properties of diacylglycerol oil at high pressure by means of ultrasonic methods,
Ultrasonics, ISSN: 0041-624X, DOI: 10.1016/j.ultras.2014.06.013, Vol.54, No.8, pp.2134-2140, 2014Abstract: The purpose of the paper is to address, using ultrasonic methods, the impact of temperature and pressure on the physicochemical properties of liquids on the example of diacylglycerol (DAG) oil. The paper presents measurements of sound velocity, density and volume of DAG oil sample in the pressure range from atmospheric pressure up to 0.6 GPa and at temperatures ranging from 20 to 50°C.
Sound speed measurements were performed in an ultrasonic setup with a DAG oil sample located in the high-pressure chamber. An ultrasonic method that uses cross-correlation method to determine the time-of-flight of the ultrasonic pulses through the liquid was employed to measure the sound velocity in DAG oil. This method is fast and reliable tool for measuring sound velocity. The DAG oil density at high pressure was determined from the monitoring of sample volume change. The adiabatic compressibility and isothermal compressibility have been calculated on the basis of experimental data. Discontinuities in isotherms of the sound speed versus pressure point to the existence of phase transitions in DAG oil. The ultrasonic method presented in this study can be applied to investigate the physicochemical parameters of other liquids not only edible oils. Keywords: Ultrasonic methods, Sound velocity, Phase transitions, High pressure food processing, Physicochemical parameters Affiliations:
Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | IPPT PAN | Balcerzak A. | - | IPPT PAN | Wieja K. | - | IPPT PAN | Malanowski A. | - | other affiliation | Kościesza R. | - | other affiliation | Tarakowski R. | - | other affiliation | Rostocki A.J. | - | Warsaw University of Technology (PL) | Siegoczyński R.M. | - | Warsaw University of Technology (PL) |
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7. |
Kiełczyński P., Szalewski M., Balcerzak A., Wieja K., Rostocki A.J.♦, Siegoczyński R.M.♦, Thermodynamic Method for Measuring the B/A Nonlinear Parameter Under High Pressure,
ENGINEERING TRANSACTIONS (ROZPRAWY INŻYNIERSKIE), ISSN: 0867-888X, Vol.62, No.1, pp.5-15, 2014Abstract: The nonlinearity parameter B/A is a measure of the nonlinearity of the equation of state for a fluid. The nonlinearity parameter B/A is a physical parameter often used in acoustics, from underwater acoustics to biology and medicine. It can provide information about structural properties of the medium, internal pressure and inter-molecular spacing. The thermodynamic method has been applied for determination of B/A parameter in diacylglycerol (DAG) oil as a function of pressure at various temperatures. Isotherms of the density and phase velocity of longitudinal ultrasonic wave as a function of pressure have been measured. Using the thermo- dynamic method along with measured isotherms of sound speed and density, the nonlinearity parameter B/A (for DAG oil) was evaluated as a function of pressure (up to 220 MPa) at various temperatures ranging from 20 to 50◦C.
Keywords: Nonlinearity parameter B/A, thermodynamic method, high pressure, longitudinal ultrasonic wave velocity Affiliations:
Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | IPPT PAN | Balcerzak A. | - | IPPT PAN | Wieja K. | - | IPPT PAN | Rostocki A.J. | - | Warsaw University of Technology (PL) | Siegoczyński R.M. | - | Warsaw University of Technology (PL) |
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8. |
Rostocki A.J.♦, Tarakowski R.♦, Kiełczyński P., Szalewski M., Balcerzak A., Ptasznik S.♦, The Ultrasonic Investigation of Phase Transition in Olive Oil up to 0,7 GPa,
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, ISSN: 0003-021X, DOI: 10.1007/s11746-013-2223-2, Vol.90, No.6, pp.813-818, 2013Abstract: This paper presents measurements of sound velocity and attenuation in olive oil, with known chemical composition, as a function of pressure, within the range of pressure up to 0.7 GPa. Dependencies of sound velocity, relative ultrasonic wave attenuation, volume, and adiabatic compressibility on pressure show discontinuities. This proves the existence of the first order phase transition in olive oil (liquid to solid-like phase transition). Rapid and large changes in relative attenuation testify to the existence of a phase transition in olive oil. Moreover, the kinetics of phase transition was also investigated. Measurement of acoustic wave velocity and relative attenuation in olive oil during the phase transition and in the high-pressure phase is a novelty. The results obtained can be useful in the development of new methods in food (edible oils) control, processing, and preservation. Keywords: Vegetable oils, Sound velocity, Triacylglycerols, Phase transition, High pressure Affiliations:
Rostocki A.J. | - | Warsaw University of Technology (PL) | Tarakowski R. | - | other affiliation | Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | IPPT PAN | Balcerzak A. | - | IPPT PAN | Ptasznik S. | - | Air Force Institute of Technology (PL) |
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9. |
Malanowski A.♦, Rostocki A.J.♦, Kiełczyński P., Szalewski M., Balcerzak A., Kościesza R.♦, Tarakowski R.♦, Ptasznik S.♦, Siegoczyński R.M.♦, Viscosity and compressibility of diacylglycerol under high pressure,
HIGH PRESSURE RESEARCH, ISSN: 0895-7959, DOI: 10.1080/08957959.2013.775649, Vol.33, No.1, pp.178-183, 2013Abstract: The influence of high pressure on viscosity and compressibility of diacylglycerol (DAG) oil has been presented in this paper. The investigated DAG oil was composed of 82% of DAGs and 18% TAGs (triacylglycerols). The dynamic viscosity of DAG was investigated as a function of the pressure up to 400 MPa. The viscosity was measured by means of the surface acoustic wave method, where the acoustic waveguides were used as sensing elements. As the pressure was rising, the larger ultrasonic wave attenuation was observed, whereas amplitude decreased with the liquid viscosity augmentation. Measured changes of physical properties were most significant in the pressure range near the phase transition. Deeper understanding of DAG viscosity and compressibility changes versus pressure could shed more light on thermodynamic properties of edible oils. Keywords: DAG viscosity, compressibility, phase transitions, transmitted and scattered light Affiliations:
Malanowski A. | - | other affiliation | Rostocki A.J. | - | Warsaw University of Technology (PL) | Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | IPPT PAN | Balcerzak A. | - | IPPT PAN | Kościesza R. | - | other affiliation | Tarakowski R. | - | other affiliation | Ptasznik S. | - | Air Force Institute of Technology (PL) | Siegoczyński R.M. | - | Warsaw University of Technology (PL) |
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10. |
Rostocki A.J.♦, Malanowski A.♦, Tarakowski R.♦, Szlachta K.♦, Kiełczyński P., Szalewski M., Balcerzak A., Ptasznik S.♦, The sound velocity measurement in diacylglycerol oil under high pressure,
HIGH PRESSURE RESEARCH, ISSN: 0895-7959, DOI: 10.1080/08957959.2013.769975, Vol.33, No.1, pp.172-177, 2013Abstract: In this article, the influence of high pressure on sound velocity at 293 K has been presented. The investigated diacylglycerol oil (DAG – [D82T18]AG) was composed of 82% DAGs and 18% triacylglycerols. The variation of sound velocity with hydrostatic pressure for DAG was evaluated up to 400 MPa. The phase transformation in DAG has been observed as a discontinuity of the dependence of sound velocity on pressure. The sound velocity during the phase transition has shown distinct increment. Also the volume changes have been measured. It has shown the rapid drop of the volume at the phase transformation pressure due to the possible crystallization of DAG oil. Keywords: high pressure, velocity, DAG Affiliations:
Rostocki A.J. | - | Warsaw University of Technology (PL) | Malanowski A. | - | other affiliation | Tarakowski R. | - | other affiliation | Szlachta K. | - | other affiliation | Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | IPPT PAN | Balcerzak A. | - | IPPT PAN | Ptasznik S. | - | Air Force Institute of Technology (PL) |
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11. |
Kiełczyński P., Szalewski M., Balcerzak A., Rostocki A.J.♦, Tefelski D.B.♦, Application of SH surface acoustic waves for measuring the viscosity of liquids in function of pressure and temperature,
Ultrasonics, ISSN: 0041-624X, Vol.51, No.8, pp.921-924, 2011Abstract: Viscosity measurements were carried out on triolein at pressures from atmospheric up to 650 MPa and in the temperature range from 10 C to 40 C using ultrasonic measuring setup. Bleustein–Gulyaev SH surface acoustic waves waveguides were used as viscosity sensors. Additionally, pressure changes occurring during phase transition have been measured over the same temperature range. Application of ultrasonic SH surface acoustic waves in the liquid viscosity measurements at high pressure has many advantages. It enables viscosity measurement during phase transitions and in the high-pressure range where the classical viscosity measurement methods cannot operate. Measurements of phase transition kinetics and viscosity of liquids at high pressures and various temperatures (isotherms) is a novelty. The knowledge of changes in viscosity in function of pressure and temperature can help to obtain a deeper insight into thermodynamic properties of liquids. Keywords: SH surface acoustic waves, Viscosity, High pressure, Phase transitions Affiliations:
Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | IPPT PAN | Balcerzak A. | - | IPPT PAN | Rostocki A.J. | - | Warsaw University of Technology (PL) | Tefelski D.B. | - | other affiliation |
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12. |
Rostocki A.J.♦, Siegoczyński R.M.♦, Kiełczyński P., Szalewski M., Balcerzak A., Zduniak M.♦, Employment of a novel ultrasonic method to investigate high pressure phase transitions in oleic acid,
HIGH PRESSURE RESEARCH, ISSN: 0895-7959, Vol.31, No.2, pp.334-338, 2011Abstract: In this work, the variation of sound velocity with hydrostatic pressure for oleic acid is evaluated up to 350MPa. During the measurement, we identified the phase transformation of oleic acid and the presence of the hysteresis of the dependence of sound velocity on pressure. From the performed measurements, it can be seen that the dependence of sound velocity on pressure can be used to investigate phase transformations in natural oils. Ultrasonic waves were excited and detected using piezoelectric LiNbO3(Y-36 cut) 5MHz transducers. The phase velocity of the longitudinal ultrasonicwaveswas measured using a cross-correlation method to evaluate the time of flight. Keywords: Sound velocity, oleic acid, high pressure, phase transition Affiliations:
Rostocki A.J. | - | Warsaw University of Technology (PL) | Siegoczyński R.M. | - | Warsaw University of Technology (PL) | Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | IPPT PAN | Balcerzak A. | - | IPPT PAN | Zduniak M. | - | other affiliation |
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13. |
Rostocki A.J.♦, Siegoczyński R.M.♦, Kiełczyński P., Szalewski M., An application of Love SH waves for the viscosity measurement of triglycerides at high pressures,
HIGH PRESSURE RESEARCH, ISSN: 0895-7959, Vol.30, No.1, pp.88-92, 2010Abstract: A new ultrasonic method of viscosity measurement at a high-pressure condition has been presented. The method is based on the Love wave amplitude measurement. The same electronic setup as in the Bleustein– Gulyaev (B–G)wave method applied by the authors recently for a high-pressure measurementwas adopted. The new transducers were made of metallic materials which make them more reliable at high-pressure conditions. The method has been successfully applied for the viscosity measurement of some triglycerides at high-pressure conditions up to 1GPa. The results have been compared with the earlier results obtained using B–G waves. This comparison has shown that Love wave method sensors are more reliable than B–G wave sensors and cheaper in fabrication, although the sensitivity of Love wave sensors was lower. During the measurement, the phase transitions in the investigated liquids were observed. Keywords: Love SH waves, viscosity, phase transitions, sensors Affiliations:
Rostocki A.J. | - | Warsaw University of Technology (PL) | Siegoczyński R.M. | - | Warsaw University of Technology (PL) | Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | IPPT PAN |
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14. |
Kiełczyński P., Szalewski M., Siegoczyński R.M.♦, Rostocki A.J.♦, New ultrasonic Bleustein-Gulyaev wave method for measuring the viscosity of liquids at high pressure,
REVIEW OF SCIENTIFIC INSTRUMENTS, ISSN: 0034-6748, Vol.79, No.2, pp.26109-0, 2008Abstract: In this paper, a new method for measuring the viscosity of liquids at high pressure is presented. To this end the authors have applied an ultrasonic method using the Bleustein-Gulyaev (BG) surface acoustic wave. By applying the perturbation method, we can prove that the change in the complex propagation constant of the BG wave produced by the layer of liquid loading the waveguide surface is proportional to the shear mechanical impedance of the liquid. In the article, a measuring setup employing the BG wave for the purpose of measuring the viscosity of liquids at high pressure (up to 1 GPa) is presented. The results of high-pressure viscosity measurements of triolein and castor oil are also presented. In this paper the model of a Newtonian liquid was applied. Using this new method it is also possible to measure the viscosity of liquids during the phase transition and during the decompression process hysteresis of the dependence of viscosity on pressure. Keywords: Bleustein-Gulyaev (B-G) waves, high pressure, viscosity measurements, phase transitions Affiliations:
Kiełczyński P. | - | IPPT PAN | Szalewski M. | - | IPPT PAN | Siegoczyński R.M. | - | Warsaw University of Technology (PL) | Rostocki A.J. | - | Warsaw University of Technology (PL) |
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15. |
Kos A.♦, Tefelski D.B.♦, Kościesza R.♦, Rostocki A.J.♦, Roszkiewicz A., Ejchart W.♦, Jastrzębski C.♦, Siegoczyński R.M.♦, Certain physico-chemical properties of triolein and methyl alcohol–triolein mixture under pressure,
HIGH PRESSURE RESEARCH, ISSN: 0895-7959, Vol.27, No.1, pp.39-42, 2007 | |