[27 Aug 2014] Volute designs present a challenging geometry for meshing. Multi-block structured meshing has the advantage of reducing numerical diffusion and a higher node to cell count ratio, making it attractive for problems where accurately predicting performance is key. However, volute features like that of the tongue region, require a significant amount of effort to obtain a purely hexahedral mesh. Volute performance simulations depend critically on the cells nearest the boundary, as the core of the flow typically has relatively low circulation, implying hybrid meshing could potentially provide similar accuracy with more automation.
In this webinar, we evaluate a generic volute design. Simulations were performed using Code Leo, a computational fluid dynamics (CFD) solver developed by AeroDynamic Solutions (ADS), on three different grid types generated with Pointwise: multi-block structured, unstructured with a hexahedral boundary layer, and unstructured with a prismatic boundary layer. We will describe the process for generating each grid, and discuss their relative pros and cons regarding meshing time and ease of modification. In addition, we will evaluate the numerical solutions from each of the three mesh topologies for accuracy and overall solution turnaround time.
|Description||Format||File Name||File Size [MB]|
|Webinar Video File||MP4||Pointwise-Webinar-Mesh-Topology-Influence-on-Volute-Aerodynamic-Performance.mp4||1570|
|Volute Geometry||Parasolid Binary||VoluteGeometry.x_b||0.1|
|Script to create O-H topology||GLF||CreateOH.glf|
|Script to a structured domain from 3 connectors||GLF||TriQuad.glf|
Mesh Topology Influence on Volute Aerodynamic Performance Computed Using Code Leo is also now available on YouTube.
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