# At what volume would air bubbles become static in a fluid with viscosity of 7000cps

I would appreciate any help with this as its been a few years since my fluid dynamics courses at University!

Basically I am trying to determine the cause of voids that we are seeing in a set resin. There are a multitude of other influences at play including venting and the geometry of the cavity that is being filled, but this made me curious about the movement of air through this resin during application and if under normal atmospheric application (not under vacuum) if this would always be inherent to the process.

As stated, the cps value of the resin is 7000, would someone be able to point me in the direction of a formula which I can use in excel to specify the volume of the air bubbles to predict their velocity in this fluid?

Thanks

The graph shows viscosity vs. shear rate and shows that between $$\gamma = 100s^{-1}$$ to $$1000 s^{-1}$$ viscosity is constant (the fluid is newtonian), outside this range the fluid is shear thinning.