  Fluids with internal microstructure like dense suspensions, biological and
polymer added fluids, are commonly found in the turbulent regime in many
applications. Their flow is extremely difficult to be studied as microstructure
complexity and Reynolds number increase, even nowadays. This bottleneck is
novelty and efficiently treated here by the micropolar theory. Our findings
support that when denser microstructure occurs turbulence is intensified by the
chaotic rotation of internal fluid's elements. Unlike in Newtonian fluids,
shear stress is now decreased, and viscous and microstructure interrotational
stresses increase near the walls and mark the turbulence intensification.

Fluid Dynamics