Shear Stress Calculator

Shear stress is the force per unit area parallel to a surface in a fluid. It measures the force applied tangentially to the surface. The formula for shear stress () in fluid mechanics, as described by Newton’s law of viscosity, is given by:

Where:

  • is the shear stress,
  • is the dynamic viscosity of the fluid,
  • is the velocity gradient or shear rate.

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