80/20 Engineering Case Study with Amarinth – www.amarinth.com
Figure 1 – CFturbo Impeller 3D model Figure 2 – ANSYS CFX Meridional passage streamlines
The industries which Amarinth supply have stringent performance requirements, including low NPSH, stable curves and capable of operating as low shear. As a result, an initial CFD analysis is done on a single blade passage (Figure 2 & 3). The CFturbo Workbench plugin is then used to output the vane geometry for simulation in CFX which quickly produces an optimised structured mesh in TurboGrid. Parametric models for Turbogrid are set-up in CFturbo so that an array of impeller variations can be run efficiently allowing the best option to be selected saving further man time.
Figure 3 – ANSYS CFX Single passage streamlines Figure 4 – Solidworks 3D Impeller model
The resulting profiles and 3D vane are imported into SolidWorks and combined with the hub and shroud profile to form a complete impeller (Figure 4). Utilizing one of Amarinth’s existing casing designs a full 3D CFD analysis can then be performed on the complete pump before commitment to manufacturing. More recently Amarinth have started to utilize CFturbo’s volute design capability to look at producing new casing designs. Initially we have found the tool effective in providing basic geometry. In the future we are looking to use the CFturbo to Workbench plugin for CFD of the entire pump fluid domain (Figure 5).
CFturbo has become an integral part of the Amarinth design suite and enabled the company to continue delivering ever more innovative and cost-effective solutions to many of the world’s leading companies.