Dynamics of Microbubbles Oscillating in Rheopectic Fluids Subject to Acoustic Pressure Field

In the present work, dynamics of a single spherical gas bubble surrounded by rheopectic fluid obeying Quemada model is numerically investigated while undergoes oscillatory motion due to acoustic forcing. The generalized form Rayleigh–Plesset equation has been used for studying in fluids. integro-differential representing solved using finite-element method (FEM) and also Gauss–Laguerre quadrature (GLQ) method. effect rheopexy number (Rx) viscosity ratio (ξ) are then over wide range working parameters. Numerical results show that behavior surrounding can dramatically affect dynamics. It predicted highly anti-thixotropic fluids, harmonics affected so much may exhibit chaotic behavior. For instance, at Rx = 0.001 ξ 1/81, one-micron-sized attain size almost 30 times its initial size. general conclusion that, sonography, microbubbles dispersed fluids indeed be considered as potent ultrasound contrast agent provided just moderately otherwise response might damage adjacent tissues.