HELYX-Coupled is an extension module for HELYX and ELEMENTS featuring a fully implicit pressure-based block coupled solver originally developed by Prof. L. Mangani (Lucerne University of Applied Science and Arts) and Prof. M. Darwish (American University of Beirut).

The coupled solver technology in HELYX-Coupled has been extensively tested and validated to simulate turbomachinery and other rotating components operating at low Mach numbers, such as: pumps, fans, blowers, wind and water turbines, torque converters, etc. The same method can also be applied to a wider range of single-phase, incompressible, isothermal flow applications to take full advantage of the improved speed, accuracy and robustness of the solver, in particular for external aerodynamics of racing vehicles and internal turbulent flows.


Why HELYX-Coupled?

While standard segregated type solvers make use of pressure correction algorithms to achieve a converged solution, HELYX-Coupled solves the continuity and momentum equations simultaneously to deliver convergence rates up to 10 times faster. HELYX-Coupled also shows linear scaling with number of cells and excellent parallel efficiency in HPC systems, making it comparable in terms of performance to similar best-in-class commercial CFD solvers in the market.



The coupled solver add-on is fully supported in HELYX-GUI and incorporates the following features as standard:

Steady-state and transient flow.
Multi-reference frame (MFR) and mesh motion with arbitrary mesh interfaces (AMI).
Porous media regions.
Block-coupled GAMG solver.
Block-coupled pre-conditioning.
Block-coupled turbulence models.




Single channel water pump simulation using HELYX-Coupled (Courtesy of Grundfos)

 

Wall shear stress on F1 car surface calculated with HELYX-Coupled (geometry courtesy of Samuel Silva).


References

De Villiers, E. "HELYX-Coupled Solver: Validation and Performance Profiling". 9th OpenFOAM Workshop 2014.

Mangani, L. Darwish, M, et.al. "Development of a Novel Fully Coupled Solver in OpenFOAMĀ®: Steady State Incompressible Turbulent Flows in Rotational Reference Frames". Numerical Heat Transfer Fundamentals 2013.


Want to Buy?

The solvers in HELYX-Coupled are released under the GNU General Public License for the benefit of the end-user. For further information about HELYX-Coupled features, availability and prices, please contact us today or speak to one of our local sales representatives.