A
Akio Tomiyama
Researcher at Kobe University
Publications - 315
Citations - 6939
Akio Tomiyama is an academic researcher from Kobe University. The author has contributed to research in topics: Bubble & Two-phase flow. The author has an hindex of 34, co-authored 297 publications receiving 5853 citations. Previous affiliations of Akio Tomiyama include Hitachi.
Papers
More filters
Journal ArticleDOI
Transverse migration of single bubbles in simple shear flows
TL;DR: In this article, trajectories of single air bubbles in simple shear flows of glycerol-water solution were measured to evaluate transverse lift force acting on single bubbles, and the authors concluded that the critical bubble diameter causing the radial void profile transition from wall peaking to core peaking in an air-water bubbly flow evaluated by the proposed CT correlation coincided with available experimental data.
Journal ArticleDOI
Drag Coefficients of Single Bubbles under Normal and Micro Gravity Conditions
TL;DR: In this article, a simple but reliable correlation for a drag coefficient, CD, of single bubbles under a wide range of fluid properties, bubble diameter and acceleration of gravity were developed based on a balance of forces acting on a bubble in a stagnant liquid and available empirical correlations of terminal rising velocities of single bubble.
Journal ArticleDOI
Terminal velocity of single bubbles in surface tension force dominant regime
TL;DR: In this article, the authors investigated the primal cause of widely scattered VT in this regime is not surfactant concentration but initial shape deformation, and the primal role of surfactants is to cause damping of shape oscillation, by which a contaminated bubble behaves as if it were a clean bubble with low initial shape deformations.
Journal ArticleDOI
Effects of cavitation in a nozzle on liquid jet atomization
TL;DR: Cavitation in two-dimensional (2D) nozzles and liquid jet in the vicinity of the nozzle exit were visualized using high-speed cameras to investigate the effects of cavitation on liquid jet under various conditions of Cavitation and Reynolds numbers σ and Re Liquid velocity in the nozzle was measured using a laser Doppler velocimetry.