Instantaneous velocity field in a body fitted, moving grid (left) and interpolated velocity field in a fixed uniform grid with artificial velocity enforced inside the blade domain (right).

Instantaneous velocity field in a body fitted, moving grid (left) and interpolated velocity field in a fixed uniform grid with artificial velocity enforced inside the blade domain (right).

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The estimation of fluid flows inside a centrifugal pump in realtime is a challenging task that cannot be achieved with long-established methods like CFD due to their computational demands. We use a projection-based reduced order model (ROM) instead. Based on this ROM, a realtime observer can be devised that estimates the temporally and spatially re...

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... interpolation uses an algorithm based on a penalized least squares method to smooth the values between the suction and pressure side of the impeller blades (see, e.g., Garcia 2010). In Figure 2, an example for such an interpolation from the bodyfitted moving grid to the fixed cartesian grid is shown. As a result of this interpolation, the flow fields that are used for the ...

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