| layout | title | description |
|---|---|---|
default |
Lifted hydrogen jet flame |
Circular Burner Diluted Partially-Premixed H2-air Lifted Flame in 2D configuration |
This configuration involves 8 parametric variations of lifted hydrogen jet flame in heated co-flow air. The central circular jet with D = 1.92mm consists of a mixture of 65% of hydrogen and 35% of nitrogen by volume with an inlet temperature of 400K. The jet is surrounded by a co-flow of heated air at 1100K and 1 bar pressure. The jet Reynolds number is varied between 5000 to 11000. The computational domain size is 12.5D x 15.6D. A detailed hydrogen-air chemical mechanism composed of 9 species and 21 elementary reactions is employed in this study. A uniform grid size of 15 μm is placed in both axial and spanwise direction, resulting in a grid size of 1600 x 2000. Two additional inert mixing cases are also added corresponding to jet Reynolds number of 5000 and 10000.
A compressible unstructured finite-volume solver is used to numerically solve the conservation laws for mass, momentum, total energy, and chemical species. The convective fluxes are discretized using a sensor-based hybrid scheme, where a high-order, non-dissipative scheme is combined with a low-order scheme to describe interfaces and flow field discontinuities. A central scheme, which is 4th-order accurate on uniform meshes, is used along with a 2nd-order accurate ENO scheme. We apply a second-order accurate simpler balanced-splitting scheme to separate the convection, diffusion, and reaction operators. The stiff chemical source terms are integrated in time using a semi-implicit fourth-order accurate Rosenbrock-Krylov scheme. For all other non-stiff operators, we utilize a strong stability preserving third-order Runge-Kutta (SSP-RK3) scheme.
- Contributor: Pushan Sharma, Wai Tong Chung and Matthias Ihme
| Reynolds number | Links |
|---|---|
| Rejet= 5000 |
Kaggle info.json |
| Rejet= 6000 |
Kaggle info.json |
| Rejet= 7000 |
Kaggle info.json |
| Rejet= 7500 |
Kaggle info.json |
| Rejet= 8000 |
Kaggle info.json |
| Rejet= 9000 |
Kaggle info.json |
| Rejet= 10000 |
Kaggle info.json |
| Rejet= 11000 |
Kaggle info.json |
| Rejet= 5000 (inert mixing) |
Kaggle info.json |
| Rejet= 10000 (inert mixing) |
Kaggle info.json |