How to Calculate Shear Rate

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Shear rate is a measurement used to describe the movement of fluid through a channel. Specifically, it expresses the fluid's change in speed, known as its velocity gradient. Being able to calculate shear rate is useful because it will allow you to predict the behavior of a fluid more precisely. It also helps you make more informed decisions regarding the best type of channel to use in construction projects.

  • Determine the velocity of the fluid. This is the speed at which the fluid is flowing through the channel. The measurement should be taken in meters per second.

  • Determine the height of the channel. This is the distance between the two interior sides of the channel's top and bottom plate.

  • Divide the velocity by the height. The result is the shear rate. For example, if you had a velocity of 6 meters per second and a height of 2 meters, divide 6 by 2 to get a shear rate of 3 meters per second.

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