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Turbulence Model Influence on Flow in the FDA Benchmark Model
Posted Tue July 28, 2020 @04:59PM
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Application Pointwise released a webinar where Chris Sideroff, Ph.D., managing director of Applied CCM Canada, uses Pointwise and the Caelus Python Library to understand the influence exerted by the turbulence model on computational fluid dynamics (CFD) simulation results for the FDA Blood Pump benchmark geometry.

Sponsor CFD Review

CFD can be used to influence decisions early in the design process. In order to assess the state-of-the-art of CFD and its predictive capability for medical devices, the U.S. Food and Drug Administration (FDA) developed two benchmark models for validation. Previous work explored hybrid and multi-block structured meshing strategies and their impact on steady-state solution accuracy for one of the benchmark cases, a centrifugal blood pump.

velocity magnitude
Velocity magnitude on a cut plane through the pump fluid passage.

In this case study, the focus was to extend the previous study by examining the influence of the turbulence model. The k-ω SST, standard k-ε and realizable k-ε turbulence models were used. Results from all six pump test conditions were compared for each turbulence model.

Discover how to:

  • Run a parametric analysis using Caelus and the Caelus Python Library.
  • Write Caelus command line applications and usage.
  • Use meshing techniques to improve volume grid quality in regions between surfaces in close proximity.
Applied CCM Inc. supports new and current users in the field of computational continuum mechanics by providing development, training, and support and expanding the use of OpenFOAM®-based technologies in the academic and industrial communities. Applied CCM is also the originator and main developer of Caelus, a fork of OpenFOAM designed to improve the user experience and give businesses confidence that open-source CFD solutions are an excellent alternative to commercial offerings. Applied CCM Inc is partnered with Dr. Darrin Stephens, located in Melbourne, Australia, who founded Applied CCM Pty Ltd in 2011.

Applied CCM is the distributor of Pointwise and CFDEMworkbench in Canada and Suggar++ worldwide. CFDEMworkbench is a Discrete Element Modelling (DEM) software developed by DCS Computing. Suggar++ is the industry-leading overset grid assembly software developed by Celeritas Simulation Technology. More information about Applied CCM is available at

Watch the webinar:

Pointwise, Inc. is solving the top problem facing CFD today – reliably generating high-fidelity meshes. The company's Pointwise software generates structured, unstructured, overset and hybrid meshes; interfaces with CFD solvers such as ANSYS FLUENT® and CFX®, STAR-CCM+®, OpenFOAM®, and SU2 as well as many neutral formats, such as CGNS; runs on Windows, Linux, and Mac, and has a scripting language, Glyph, that can automate CFD meshing. Manufacturing firms and research organizations worldwide have relied on Pointwise as their complete CFD preprocessing solution since 1994.

Pointwise is a registered trademark of Pointwise, Inc. in the USA and the EU. Pointwise Glyph, T-Rex and Let's Talk Meshing are trademarks of Pointwise, Inc. All other trademarks are property of their respective owner.

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