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This page gives a brief background on MixPro's engineering theory and expertise.  Visit MixPro's website.

Conservation of Momentum

We use the Momentum Flux Theory to quantify the mixing phenomenon. This well documented and tried theory was developed by Carl Yackel back in the 60's and is currently being used (in one form or another) by several mixing companies today. Simply stated, the rationale behind the Momentum Flux concept is best explained as follows: A rotating impeller in a tank produces an induced jet flow (or stream) of fluid. This stream has an associated velocity, mass and cross-sectional area. As the stream travels through the tank, it diverges or expands within the confines of the tank. This expansion causes the cross-sectional area and velocity to change markedly, thus additional fluid is entrained within the stream. However, the overall momentum of the stream is approximately conserved, as per Newton's second law (Conservation of Momentum).

Momentum Flux Theory

The overall conserved momentum is known as momentum flux. Because this is a steady state system, one can calculate the momentum of the induced jet flow at the impeller and consequently determine the average overall tank momentum (or expanded jet momentum). Thus the momentum produced at the impeller will manifest itself as motion throughout the tank and will provide an accurate measure of the overall average bulk fluid velocities (or tank momentum level). This is not to say that the velocities throughout the tank are exactly equal, but rather to state a specific reference velocity can be determined which is proportional to all local fluid velocities within the tank.

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