Apparatus for sound velocity measurements in gases up to 10 kbar: Experimental data for argon

Kortbeek, P. J.; Muringer, M. J. P.; Trappeniers, N.J.; Biswas, S. N.

doi:10.1063/1.1137990

Cited by 47 publications

(23 citation statements)

References 10 publications

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“…The design of the present ultrasonic apparatus is based on the double reflector pulse-echo technique [7,8] and has been chosen because of its good combination of design simplicity and high achievable resolution and accuracy.…”

Section: Methodsmentioning

confidence: 99%

Speed of Sound in Pure Water at Temperatures between 274 and 394 K and at Pressures up to 90 MPa

et al. 2005

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A newly designed experimental apparatus has been used to measure the speed of sound u in high-purity water on nine isotherms between 274 and 394 K and at pressures up to 90 MPa. The measurement technique is based on a traditional double-reflector pulse-echo method with a single piezoceramic transducer placed at unequal distances from two stainless steel reflectors. The transit times of an acoustic pulse are measured at a high sampling rate by a digital oscilloscope. The distances between the transducer and the reflectors were obtained at ambient temperature and pressure by direct measurements with a coordinate measuring machine. The speeds of sound are subject to an overall estimated uncertainty of 0.05 %. The acoustic data were combined with available values of density ρ and isobaric heat capacity c p along one isobar at atmospheric pressure to calculate the same quantities over the whole temperature and pressure range by means of a numerical integration technique. These results were compared with those calculated from the IAPWS-95 formulation with corresponding relative deviations which are within 0.1%.KEY WORDS: pulse-echo technique; pure water; speed of sound.

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Section: Methodsmentioning

confidence: 99%

Speed of Sound in Pure Water at Temperatures between 274 and 394 K and at Pressures up to 90 MPa

et al. 2005

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“…In the acoustic configuration, the cell is designed to determine the difference in the propagation time of an acoustic pulse between the PZT transducer and the opposite reflectors, realizing a traditional double pulseecho method [1,2]. As the acoustic source and the propagating cavity have the same cross section, the acoustic propagation is very much like that taking place in an interferometer.…”

Section: Introductionmentioning

confidence: 99%

A Microwave–Ultrasonic Cell for Sound-Speed Measurements in Liquids

et al. 2005

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In this work preliminary results obtained in developing a prototype cylindrical ultrasonic cell designed to apply a microwave resonance technique to the determination of its internal dimensions are described. Since the apparatus is intended for speed-of-sound measurements in pressurized liquid-phase media, the cell design is such that a double reflector pulse-echo technique can be used for time-of-flight measurements. The main absorption and dispersion effects that influence the acoustic measurement in this interferometer-like configuration and the values of the corresponding corrections are considered and discussed. The performance of the experimental apparatus and method in terms of achievable precision and accuracy was tested by measuring the speed of sound in water on a single isotherm at 325 K between 0.1 and 90 MPa.KEY WORDS: microwave resonator; pulse-echo method; speed of sound.

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“…The design of this apparatus is based on the double reflector pulse-echo technique [6,7] and has been chosen because of its good combination of design simplicity and high resolution and accuracy. The double pulse method is based on direct measurement of the delay between echoes coming from two different reflectors.…”

Section: Experimental Apparatusmentioning

confidence: 99%

Speed-of-Sound Measurements in n-Nonane at Temperatures between 293.15 and 393.15 K and at Pressures up to 100 MPa

2006

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Speed-of-sound measurements in liquid phase n-nonane (C 9 H 20 ) are reported along six isotherms between 293.15 and 393.15 K and at pressures up to 100 MPa. The experimental technique is based on a double reflector pulseecho method. The acoustic path lengths were obtained by comparison with measurements carried out at atmospheric pressure and ambient temperature in pure water. The values of the speed of sound are characterized by an overall estimated uncertainty of less than 0.2 %. These results were compared with literature values and with predictions of a dedicated equation of state.KEY WORDS: pulse-echo technique; n-nonane; speed of sound.

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Apparatus for sound velocity measurements in gases up to 10 kbar: Experimental data for argon

Cited by 47 publications

References 10 publications

Speed of Sound in Pure Water at Temperatures between 274 and 394 K and at Pressures up to 90 MPa

Speed of Sound in Pure Water at Temperatures between 274 and 394 K and at Pressures up to 90 MPa

A Microwave–Ultrasonic Cell for Sound-Speed Measurements in Liquids

Speed-of-Sound Measurements in n-Nonane at Temperatures between 293.15 and 393.15 K and at Pressures up to 100 MPa

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