Validation Case Highlights: Butterfly Valve

Background of Butterfly Valve Validation

Validation cases are the best way to evaluate how a numerical simulation compares to a physical problem that has been measured experimentally. In this blog post, we will take a look at two important performance parameters for incompressible flow through an industrial scale butterfly valve, the flow coefficient (Cv) and the torque coefficient (CT).

Valve Geometry

CAD geometry of butterfly valve on SimScale

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Meshing of the Butterfly Valve

A 3D hexahedral SnappyHexMesh was used and refinement was done in three places: upstream, downstream and in the vicinity of the valve. Layer mesh was used on all wall regions for better accuracy.

3D hexahedral SnappyHexMesh of valve on SimScale

 Simulation setup

Tool Type: OpenFOAM

Analysis Type: Incompressible Steady State

Turbulence Model: K Omega SST

Fluid: Water (ν =10-6 m2/s)

Boundary Conditions:

Boundary conditions SimScale

Results of the Validation

A comparison of the flow coefficient (Cv) and the Torque coefficient (CT) over the opening angle ranging from 20 to 85 degrees can be seen in the plots below.

Comparison of the flow coefficient (Cv) and the Torque coefficient (CT) - SimScale

From these plots it can be seen that performance parameter values from the numerical analysis done on the SimScale platform match well with the experimental values from the team of Xue guan Song [1].

This validation case is freely available in the SimScale Public Projects library and can be imported into your workspace here. To avoid large data, the import project only contains results for angles 20, 50 and 85 degrees.

If you are interested in learning more about how you can leverage the SimScale simulation platform to optimize your valve design, on this page you can find more case studies, public projects, and information.


[1] Xue guan Song, Young Chul Park ; NUMERICAL ANALYSIS OF BUTTERFLY VALVE-   PREDICTION OF FLOW COEFFICIENT AND HYDRODYNAMIC TORQUE COEFFICIENT, Proceedings of the World Congress on Engineering and Computer Science 2007 WCECS 2007, October 24-26, 2007, San Francisco, USA.

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