The algorithms for the solution of the Poisson equation is being adapted to the new Mare Nostrum computer, in order to use effectively its major computing power. This task, which is of great interest, was not anticipated since neither this equipment existed nor the intentions of its installation were known in the beginning of the project.
The code is still to extend to non-periodic situations in none of the axis, the implementation of LES models is to finish, and the code is to apply to more situations of interest.
Illustrative results obtained with Code1. From left to right, three instantaneous temperature fields at Raz =6.4×108, 2×109 and 1010, respectively, with Pr =0.71 (air); the turbulent kinetic energy, the turbulent kinetic energy dissipation and the turbulent kinetic energy generation for Raz =6.4×108 and Pr =0.71. Bottom: Instantaneous pressure field for flow past a square cylinder at Re=22.000.
-Code for the resolution of flows with approximately parabolic structure (Code2)
Turbulence coupling formulations, generation ratios on the basis of Eddy break-up models and flamelet models have been carried out and implemented in the code.
Radiation in participating media and its solution by means of the DOM technique and the Optically Thin Limit approximation have been formulated.
Parallelization of DOM and its integration to the combustion code are pending.
Regarding two-phase flows, the modeling has been carried out by means of a VOF model, implementation and application are performed in the design context of the absorption refrigeration systems using the parallel code for flows with parabolic structure.
Regarding flows in channels of arbitrary geometry, the implementation of pressure and periodic boundary conditions, and the RANS models is completed.
Coupling radiation in participating media (DOM) with combustion is pending. To do so, it is necessary to modelize the behavior of gas mixtures, implementing a multiband model.