How Do Air Bubbles Affect Viscosity in High Viscosity Fluids?

[ZdMh]

Is a high viscosity fluid(liquid), filled with air bubbles, more or less vicious than without air? Please provide the scientific principle behind that

 

[Lnewqban]

Air bubbles should affect density, but viscosity of the fluid itself should remain the same, unless the amount of mixed air is big and sufficient to modify the characteristics of the mix.
Let’s wait for other posts.

 

[hutchphd]

Viscosity is an ill-defined term and before this discussion slides off the rails, it is important to specify which of the various "types" of viscosity is being discussed. In my experience they are largely defined by the experiments used to measure them.
https://en.wikipedia.org/wiki/Viscosity#Definition

 

[ZdMh]

Viscosity is an ill-defined term and before this discussion slides off the rails, it is important to specify which of the various "types" of viscosity is being discussed. In my experience they are largely defined by the experiments used to measure them.
https://en.wikipedia.org/wiki/Viscosity#Definition

Of course I meant the Dynamics viscosity not the kinematic

 

[ZdMh]

Air bubbles should affect density, but viscosity of the fluid itself should remain the same, unless the amount of mixed air is big and sufficient to modify the characteristics of the mix.
Let’s wait for other posts.

Yes maybe; because my friend said to me "if the fluid has too much air bubbles it will be lighter therefore we use a mixer in tanks"... but I'm not sure yet of this info

 

[Chestermiller]

Is a high viscosity fluid(liquid), filled with air bubbles, more or less vicious than without air? Please provide the scientific principle behind that

The macroscopic viscosity of this mixture will, of course, be less than the pure liquid alone. Just consider the limit of 100% gas.