Acoustical Studies on Beryllium Oxide/Silicone Oil Nanofluids

Abstract

Molecular interactions of Silicone oil based Beryllium oxide nanofluids have been studied using ultrasonic parameters at room temperature. BeO nanoparticles synthesized by chemical precipitation method was used to prepare silicone oil based BeO nanofluids. BeO nanofluids were prepared by dispersing synthesized BeO nanoparticles in the Silicone Oil base fluid with the help of sonication. Ultrasonic velocity for particle-fluid mixtures of Silicone oil with BeO has been carried out for different volume fraction (0 to 0.003) at 0.0005 intervals at room temperature. The data experimentally measured has been used to estimate the various acoustical and thermodynamical parameters. The behavior of these parameters in this particle fluid system has been discussed in terms of inter/intramolecular interactions with respect to concentration. The particle base fluid molecular interactions in the nanofluids cause an increment in velocity value of Silicone oil based nanofluids. The propagation of ultrasonic waves causes impedance which increases the intermolecular distance between the molecules. The transmission and reflection modes of sound waves in the nanoparticle and base fluid molecules are noted by the specific acoustic impedance. It is noted that the acoustic impedance value increases with rise in concentration owing to the molecular interaction between BeO and silicone oil fluid molecules affecting the structural arrangement.