Existing diffraction correction models for ultrasonic transmit-receive measurement systems
rely on simplifying assumptions with respect to the boundary conditions at the transmitter or …

Different signal processing methods are explored to extract individual arrivals from
frequency spectra that include interfering direct and multipath arrivals. Specifically, spectrum …

Ultrasonic transit time flow meters are promising for fiscal high-precision energy flow rate
measurement of natural gas in subsea applications. For accredited operation, improved …

The composition of natural gas highly depends on its origin: natural gas from various
deposits, substitute natural gas that can be produced from fossil fuels or renewable sources …

In this paper, the concept of a low-cost ultrasonic gas-quality analyzer was studied and
experimentally validated. The target gas-quality parameters of propanated biomethane, that …

Abstract Bulk Poly (N-isopropylacrylamide)(PNIPAm) hydrogels are thermally responsive
polymers that undergo a sharp volumetric phase transition around its lower critical solution …

Finite element modeling of ultrasound measurement systems for gas. Comparison with
experiments in air. Page 1 Master thesis in Acoustics Finite element modeling of ultrasound …

Measurement of the amount of oil and gas exported from one country to another, or
allocated between partners in a license, is made in fiscal metering stations. In 2004 the total …

Accurate correction for transducer diffraction effects appears to be among the most critical
factors in order to realize a high precision sound velocity measurement cell for custody …

This paper proposes a new method of getting sound velocity by measuring the sound
pressure at three positions in a tube. By using LabVIEW software as a platform and building …