The principal non-dimensional groups are balances between buoyancy and liquid inertia, liquid viscosity, or surface tension.
The important variables that affect the gas holdup, bubble dynamics and flow regime in a bubble column are gas and liquid velocities, liquid viscosity, liquid surface tension, design of the gas distributor, solid concentration and column diameter.
The impacts of the secondary liquid loading, secondary liquid viscosity, and particle diameter on the fluid dynamics were established.
Effects of liquid viscosity, liquid height and gas sparger have been investigated in the bubble column.
The two properties of interest were liquid viscosity and liquid surface tension although density was also changed.
Liquid viscosity affects liquid diffusivity and bubble size distribution by defining bubble stability in the flow.
The extensive database also covered wide ranges of physical properties such as liquid density (684 1594 kg/m3), liquid viscosity (0.410 21.1 mPas), and surface tension (20.0 75.0 mN/m).
Effects of operating variables such as gas and liquid velocities, liquid viscosity and media particle kind (density) on the fluctuating frequency, dispersion coefficient and exiting rate of media particles from the test section were determined.
The sensitivity of the liquid film models to the changes on the bubble velocity, liquid slug holdup and liquid viscosity is accessed through a series of parametric runs.
The effects of rotational speed, gas flow rate, liquid flow rate and liquid viscosity on the pressure drop and flooding were examined.
Whereas, the effects of liquid surface tension and liquid viscosity on DZ are found to be small.
