Abstract
In this study, investigations of variations of ultrasonic speed with salinity and temperature in water samples are reported. Initially samples of saline water were prepared by dissolving measured quantities of salt (table salt, NaCl) in a given volume of pure water. Measurements were carried out in a rectangular bath having plexi-glass windows. One transducer with 4 MHz is used for launching and receiving the longitudinal ultrasonic pulses through the water. A mathematical expression describing speed as a function of temperature and salinity is developed. Results indicate that ultrasonic speed increases with temperature and salinity.
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