Response to “Comment on ‘Consistent hydrodynamics of ferrofluids’” [Phys. Fluids 34, 013319 (2022)]

Abstract

Shliomis [“Comment on ‘Consistent hydrodynamcs of ferrofluids’ [Phys. Fluids 34, 013319 (2022)],” Phys. Fluids 34, 079101 (2022)] employed an inappropriate definition for the total angular momentum of ferrofluids to formulate the conservation law of angular momentum. We show that the widely accepted definition of angular momentum for dispersion of spinning particles leads to a different expression for the total angular momentum. Furthermore, Brenner's [Annu. Rev. Fluid Mech. 2, 137 (1970)] relation (linking volume-averaged solvent vorticity with suspension vorticity and spin field) is not in conflict with the conservation of angular momentum. Shliomis also failed to distinguish between apparent and reactive rotations of magnetization.