Unit system in ConstraintIB falling_sphere example

[Sudheer Kumar Bhalothia]

Dear, 

I want to know how the unit system should be put in the input3d file of falling_sphere in ConstraintIB, I am simulating a sphere falling using that example. 

The variables are radius, viscosity, densities and gravity and domain size. Please clarify.

Thank You,

Sudheer Kumar Bhalothia

[Boyce Griffith]

On Jan 13, 2026, at 7:06 AM, Sudheer Kumar Bhalothia <sudheerk...@gmail.com> wrote:

Dear, 

I want to know how the unit system should be put in the input3d file of falling_sphere in ConstraintIB, I am simulating a sphere falling using that example. 

The variables are radius, viscosity, densities and gravity and domain size. Please clarify.

IBAMR generally leaves the choice of units up to the modeler — which means that you will need to ensure that all dimensional quantities have consistent units.

Thank You,

Sudheer Kumar Bhalothia

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