Simcenter STAR-CCM+ 2406 Released. What’s new.
New enhancements in Simcenter STAR-CCM+ are aimed at helping you:

Accurate affordable multiphase simulation including mixtures
Hybrid multiphase is a smart approach for the affordable simulation of liquids in various phases like jets, films, droplets, and mist. However, the current state-of-the-art VOF-Lagrangian Multiphase – Fluid Film approach could not properly cover applications with mixtures (mist), as it needed everything to be resolved or discretely accounted for – which would mean significant computational cost.
To address this, the new release of Simcenter STAR-CCM+ 2406 introduces numerous capabilities to put Mixture Multiphase with Large Scale Interfaces MMP-LSI into the center of hybrid multiphase modeling. Firstly, the new version supports the transition of small Lagrangian droplets to MMP. This enables a more efficient treatment of very small droplets – typically 10s of microns in size, carried with continuous flow – where LMP is not an efficient model. On top, S-Gamma for MMP-LSI allows for the accurate transport and prediction of droplet or bubble size distributions in MMP phases coming from LMP (and other sources). Lastly, LMP Impingement into MMP-LSI Free Surfaces enables you to simulate scenarios where LMP droplets pass into regions of high volume fraction of corresponding continuous phase.
Together these new capabilities allow you to cover applications including mixtures, thereby always leveraging the most efficient multiphase model to be used locally while transitions between the most adequate models will be handled automatically. This innovation enables you to efficiently simulate resolved free surfaces, ballistic droplets, films, and mixtures in a single simulation. The result is accurate predictions of droplet sizes and phase transport, making it efficient for a wide range of applications, like E-motor cooling.
Improved fidelity for battery cell ageing risk assessment

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The degradation of a battery cell’s inner active materials leads to long-term decreasing cell performance, posing a challenge to battery designers for identifying mitigation methods.
With the new release of Simcenter STAR-CCM+ 2406, the Sub-grid Particle Surface Film model for cell degradation captures two main ageing mechanisms: Solid-Electrolyte Interphase (SEI) film growth and lithium plating film growth. Designed to be used in conjunction with the 3D cell designer in Simcenter STAR-CCM+ this model allows you to localize cell areas most impacted by ageing, with all models validated against experimental results from the EU Commission-funded project MODALIS.
This innovative approach helps you model the complexity of ageing processes in batteries. It complements long-term time-domain-focused system simulations by providing valuable spatial insights into cell degradation mechanisms and hence contributes to more effective mitigation strategies.
Enhanced particle agglomeration modeling of (wetted) granular flows
Particle granulation is an important part of the process industry and pharmaceutical manufacturing and, plays a crucial role in final drug product quality. Simulation of such industrial processes with solid particle agglomeration or deposition is challenging and requires accurate modeling of the cohesive forces.
With the new release of Simcenter STAR-CCM+ 2406, the Particle Agglomeration model, which replaces the Parallel bonds model, facilitates bond formation based on user-defined local and temporal conditions. This model allows bonds between particles and boundaries and includes bond stiffness independent of mechanical properties. These enhancements enable you to simulate more realistic particle agglomeration processes in various industrial applications, significantly improving realism and reducing computational cost.
Uncompromised contact modeling for complex Fluid-Structure Interaction (FSI) contacts
The standard penalty method for mechanical contacts requires user input for the penalty parameter, which describes contact stiffness. This can be challenging, especially in complex contact situations.
The new release of Simcenter STAR-CCM+ 2406 includes the Augmented Lagrangian Multiplier method (ALM), based on the Uzawa algorithm, which mitigates this by enforcing accurate contact independent of the penalty parameter. It is robust even in sudden contact changes, with an optional automatic update of the penalty parameter for faster convergence. You can now achieve high accuracy and robustness in complex contacts without compromise.