1.8. Current Activities
Ongoing Development and Enhancements
Last updated
Was this helpful?
Ongoing Development and Enhancements
Last updated
Was this helpful?
The primary goal is to enhance GASFLOW-MPI's chemical kinetics modeling capabilities by enabling the direct import of user-specified reaction mechanisms in the widely-used CHEMKIN format. This will greatly simplify the process of incorporating custom or specialized chemical kinetics data, allowing users to leverage the extensive collection of detailed reaction mechanisms available in the scientific literature. The seamless integration of CHEMKIN-compatible inputs will expand the modeling capabilities of GASFLOW-MPI, making it a more versatile and powerful tool for researchers and engineers working in areas related to reactive flow simulations.
GASFLOW-MPI utilizes the TChem toolkit to parse CHEMKIN data files, calculate the right-hand side function and its Jacobian for a system of reaction ordinary differential equations (ODEs) through each fluid cell. The system is then solved using the ODE solvers in PETSc (Portable, Extensible Toolkit for Scientific Computation). PETSc is also used to manage communication between the algebraic structures, such as vectors and matrix, and mesh data structures in parallel computing of the fluid dynamics.
For more details, please refer to the following resources.
The GASFLOW-MPI development team is working to enhance the software's turbulence and combustion modeling capabilities to more accurately simulate large-scale jet flames in industrial applications.
Turbulence Model Improvements:
The turbulence models are being evaluated and updated to better capture the complex turbulent flow phenomena observed in large-scale jet flames. This includes:
Evaluating the performance of turbulence models, such as Reynolds-averaged Navier–Stokes Models (RANS) or Large Eddy Simulation (LES) approaches, to improve the prediction of turbulent mixing and flow structures.
Optimizing the numerical implementation and computational efficiency of the turbulence models to enable their practical application to large-scale industrial simulations.
Combustion Model Enhancements:
In parallel, the combustion modeling capabilities in GASFLOW-MPI are being enhanced to better capture the complex chemical kinetics and turbulence-chemistry interactions in large-scale jet flames. Key focus areas include:
Implementing turbulence-chemistry interaction models to better represent the influence of turbulence on reaction rates for practical industrial applications. This includes coupling the Eddy Dissipation Model (EDM) with global finite-rate chemical kinetic models, which can capture the effects of turbulent mixing on the overall combustion process.
Implementing advanced turbulence-chemistry interaction models, such as the Eddy Dissipation Concept (EDC), which can be coupled with detailed chemical kinetics mechanisms. This capability allows for more accurate representation of coupling of turbulence and detailed chemistry.
Improving the integration between the fluid dynamics, convective and radiative heat transfer, and chemical kinetics calculations to better model the multi-physics phenomena observed in large-scale industrial jet flame configurations.
