The use of computational methods (e.g., CFD) for the design and optimization of machinery is already standard. The development of pumps and their components is already at a very high level, especially for operation at the design point. However, there are specific machine types and operational situations where significant development and optimization needs still exist. For example, available CFD methods still work unreliably for radial centrifugal pumps with low specific speed. For operations far from the design point or near the cavitation limit, no accurate computational methods are available either. Moreover, especially in these operating conditions, significant interactions with the system can occur due to reflected and possibly amplified pressure waves. Numerical simulation of the flow in displacement pumps is not yet a widely established tool, unlike in centrifugal pumps, due to the complex kinematics.
Sufficiently accurate and functional simulation methods are not available for the above applications. Therefore, at HSM, flow simulation methods are being developed, validated, and applied to address specific research questions for special types of pumps and operating conditions. Compressible CFD methods are used for cavitating flows, which can also predict the location of cavitation erosion. For the calculation of displacement pumps, the complex kinematics are accounted for with special mesh generation and deformation algorithms, as well as fluid-structure interaction. Typically, the system calculation is performed using 1D methods for reasons of computation time, which are connected to the 3D simulation of the pump by suitable algorithms. Generally, this involves reliance on in-house developments and open codes (hydRUB, solver3D, and OpenFoam), which allow for easy model and functionality extension.
Hydroakustik kavitierender Pumpenströmungen
Echtzeitfähige digitale Zwillinge von Kreiselpumpen.
Erhöhung der Energieeffizienz von 1- und 2-Schaufelpumpen: 1aPump.
Numerische Simulation von Druckstößen und Schwingungen in Pumpensystemen.
Integrated Design System zur Auslegung, Nachrechnung und Optimierung von Kreiselpumpen beliebiger spezifischer Drehzahl.
Kompressible 3D/1D Strömungssimulationsmethode zur Kopplung von hydraulischer Maschine und ihrer Anlage.
3D Simulation der kompressiblen kavitierenden Strömung in oszillierenden Verdrängerpumpen.
3D-CFD-Code zur Vorhersage von Kavitation und der Haltedruckhöhe (NPSH) in Kreiselpumpen.
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Letzte Änderung: 18. Mär. 2025
