Source: wikibot/viscous-stress-tensor
= Viscous stress tensor
{wiki=Viscous_stress_tensor}
The viscous stress tensor is a mathematical representation that describes the internal frictional forces in a fluid (or a deformable solid) due to its viscosity when it is subjected to deformation. It plays a critical role in fluid dynamics, especially in the study of Newtonian fluids, where the stress is linearly related to the strain rate.