Title :
Thermodynamic method for measuring the B/A nonlinear parameter under high pressure
Author :
Kielczynski, Piotr ; Szalewski, Marek ; Balcerzak, Andrzej ; Wieja, Krzysztof ; Rostocki, Aleksander J. ; Siegoczynski, Ryszard M.
Author_Institution :
Inst. of Fundamental Technol. Res., Warsaw, Poland
Abstract :
The nonlinearity parameter B/A is a measure of the nonlinearity of the equation of state for a fluid. It plays a significant role in acoustics, from underwater acoustics to biology and medicine. The nonlinearity parameter is important because it determines distortion of a finite amplitude wave propagating in the fluid. Moreover, it can be related to the molecular dynamics of the medium and it can to provide information about structural properties of medium, internal pressures, clustering, intermolecular spacing, etc. Importance of the B/A parameter increases with the development of high-pressure technologies. The thermodynamic method has been applied for determination of B/A parameter in diacylglycerol (DAG) oil as a function of pressure at various temperatures.
Keywords :
acoustic wave velocity; equations of state; high-pressure effects; oils; thermodynamics; underwater acoustic propagation; biology; clustering; diacylglycerol oil; finite amplitude wave propagation; high-pressure effects; intermolecular spacing; internal pressure; medicine; molecular dynamics; nonlinear parameter; pressure function; sound velocity; structural properties; temperature function; thermodynamic method; underwater acoustics; Joints; Nonlinearity parameter; high pressure; thermodynamic method; ultrasonic velocity;
Conference_Titel :
Ultrasonics Symposium (IUS), 2013 IEEE International
Conference_Location :
Prague
Print_ISBN :
978-1-4673-5684-8
DOI :
10.1109/ULTSYM.2013.0424
