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Advancing Simulation Capabilities: Integrated Smoothed-Particle Hydrodynamics (SPH) in Simcenter STAR-CCM+
21 May, 2024

#25

In the ever-evolving landscape of computational fluid dynamics (CFD), Simcenter STAR-CCM+ has marked a significant milestone with the integration of Smoothed-Particle Hydrodynamics (SPH) technology into its platform. This groundbreaking development revolutionizes the simulation capabilities, offering engineers a seamless transition between mesh-based CFD and SPH simulations, all within a unified environment.

SPH technology stands out as a potent alternative method for modeling complex transient flows, particularly those featuring highly dynamic free surface phenomena like jets and splashes. Traditionally, users were forced to choose between standalone tools for SPH or mesh-based CFD, leading to a fragmented workflow and potential loss of efficiency. However, with the integration of SPH into Simcenter STAR-CCM+, engineers now have the flexibility to leverage both methodologies within a single tool.

One of the most significant advantages of this integration is the streamlined workflow it offers. Unlike traditional mesh-based simulations, SPH simulations do not require volume meshing, eliminating the need for a clean CAD model. Instead, users can utilize Surface Topology Regions, allowing for quick setup even with complex geometries that may not be watertight or conformal.

Motion definition in SPH simulations is simplified, requiring only the setup of rotation speed for each relevant part. Complex techniques such as overset meshing are unnecessary, and SPH can effectively handle motions involving contact, such as gear interactions, without additional treatment.



In its initial release, Simcenter STAR-CCM+ SPH solver offers incompressible SPH capabilities, compatible with gravity, fluid viscosity, fluid initialization, solid wall boundary conditions, and rotational motion. Future releases promise to expand upon these capabilities with the addition of further models, enhancing the versatility of SPH simulations.

The integrated SPH solver empowers engineers with advanced data analysis tools, allowing visualization of particles with scalar or vector fields. Additionally, users can monitor wall wetting and churning losses, creating comprehensive reports on torque, force, and other essential quantities for insightful analysis.


Performance is a crucial aspect of any simulation tool, and the integration of SPH into Simcenter STAR-CCM+ brings notable improvements. Comparative studies demonstrate accelerated simulation times, with up to 30% faster processing on multiple cores compared to standalone SPH tools. Moreover, superior scalability ensures efficient utilization of computational resources, further enhancing productivity.


The integration of Smoothed-Particle Hydrodynamics into Simcenter STAR-CCM+ represents a significant advancement in CFD simulation capabilities. By seamlessly combining SPH with mesh-based methods, engineers can tackle a broader range of multiphase applications without the need for additional software tools. With streamlined workflows, advanced physics capabilities, and enhanced performance, Simcenter STAR-CCM+ continues to solidify its position as a leader in the realm of computational engineering simulation.