Numerical Investigation on a Prototype Centrifugal Pump Subjected to Fluctuating Rotational Speed

<table>Evolutions of relative streamlines and turbulence energy (m<sup>2</sup><svg height="5.4499998" id="M23" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 4 5.4499998" width="4" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g transform="matrix(.017,-0,0,-.017,.062,5.388)"><path d="M170 255q0 -25 -16 -41t-40 -16t-40 16t-16 41t16 41.5t40 16.5t40 -16.5t16 -41.5z" id="x22C5"></path></g>
</svg>s<sup>−2</sup>) in quasi-steady calculations.</table>

Mathematical Problems in Engineering

fig7

Figure 7

Figure 7: Numerical Investigation on a Prototype Centrifugal Pump Subjected to Fluctuating Rotational Speed 