Viscous flow Calculator

Viscous flow states that the shear stress ($\tau$) in a fluid is directly proportional to the velocity gradient (du/dy) perpendicular to the direction of flow, and the constant of proportionality is the dynamic viscosity ($\mu$):

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where:

• $\tau$ is the shear stress.
• $\mu$ is the dynamic viscosity.
• du/dy​ is the velocity gradient.