Ü Impeller | Meridional flow

 

The meridional flow is computed by a streamline curvature method. The flow domain is divided into thin layers of 11 meridional flow surfaces. There a two-dimensional flow computation is possible with sufficient accuracy. The calculation is made on 35 quasi-orthogonal lines - from the suction area up to the extension area behind the trailing edge. The leading and trailing edges are two of these quasi-orthogonal lines.

 

Since this design program is supposed to deliver just a rough estimation of the meridional flow the influence of friction is neglected. Furthermore rotational symmetry has been assumed. After completing the CFturbo-based pre-design process, one should use an appropriate CFD-code for flow recomputation of the impeller or of the whole pump stage.

 

After calculation the meridional contour as well as the cm and w distribution is represented showing 6 streamlines and 35 quasi-orthogonal lines. You could adjust the size of the diagrams by mouse.

 

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