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What is coefficient of Viscosity ? |
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Answer» Solution :A force is required of MAINTAIN the flow of layers. This force is proportional to the area of CONTACT of layers and velocity gradient `F = eta A (dy)/(DZ), eta = (F)/(A((dz)/(dz)))` `.eta.` is proportionality constant and is called COEFFICIENT of viscosity. If contact surface area = unit Area (1) and viscosity velocity gradient `((dy)/(dz))=1` then `eta = 1`. Viscocity CO - efficient is the force when velocity gradient is unity and the area of constant is unit area. This `.eta.` is measure of viscocity. |
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