Hydrodynamics of motion of spherical particles, drops, and bubbles in non-Newtonian liquid: Experimental studies

Droplet Shape and Drag Coefficients in Non‐Newtonian Fluids: A Review

“…Relevant studies have shown that the occurrence of negative wake and the cusp tail is related to the droplet deformation and the rheological properties of the continuous phase [16][17][18]. Besides, the relevant studies also include the droplet size variation and its effect on drag coefficient [19], the interaction of particles, droplets, and bubbles [20][21], and the effect of surfactant [22][23][24]. On this basis, Eiswirth et al [25], Chu et al [26], Nalajala et al [27][28][29] conducted numerical studies on the motion behavior of bubbles, droplets, and solid particles in non-Newtonian fluids and their effects on the external flow field.…”

“…Relevant studies have shown that the occurrence of negative wake and the cusp tail is related to the droplet deformation and the rheological properties of the continuous phase 16–18. Besides, the relevant studies also include the droplet size variation and its effect on drag coefficient 19, the interaction of particles, droplets, and bubbles 20–21, and the effect of surfactant 22–24. On this basis, Eiswirth et al.…”

Experimental estimation of characteristic times of the existence of liquid drops in the form of a sphere and ellipse upon their movement in a gas environment under the conditions of moderate weber numbers

“…Discrepancies between the modeled shapes of drops and those that actually occur are frequently [6][7][8][9] accepted as (sometimes rather significant) differences when comparing the results of theoretical studies of heat and mass transfer and hydrodynamics using such approaches and exper imental data. A determining influence of real shapes of drops, particles, and bubbles was also established for processes of their movement in liquids (see, e.g., [10][11][12][13]). …”