2. dfLowMachFoam
2.1. One-Dimensional Planar Flame
Problem Description
The case simulates the steady-state 1D freely-propagating flame. The results are able to catch the flame thickness, laminar fame speed and the detailed 1D flame structure. This case demonstrate that the convection-diffusion-reaction algorithms implemented in our solver are stable and accurate.
Computational Domain length | 0.06 m |
Mixture | Hydrogen-Air |
Equivalence Ratio | 1.0 |
Inlet Gas Temperature | 300 K |
Output
2.2. Two-Dimensional Jet Flame
Problem Description
This case simulates the evolution of a 2D non-premixed planar jet flame to validate the capability of our solver for multi-dimensional applications.
Computational Domain size (x) | 0.03 m * 0.05 m |
Jet Composition | H2/N2= 1/3 (fuel jet), Air (co-flow) |
Initial Velocity | 5 m/s (fuel jet), 1 m/s (co-flow) |
Initial Gas Temperature | 1400 K (ignition region), 300 K (other area) |
Output
The initial condition and the evolution of the jet flame are presented in this figure.
2.3. Three-Dimensional reactive Taylor-Green Vortex
3D reactive Taylor-Green Vortex (TGV) which is a newly established benchmark case for reacting flow DNS codes is simulated here to evaluate the computational performance of our solver.
The initial fields are set according to a benchmark case established by Abdelsamie et al. The figure below shows contours of vorticity magnitude and temperature as well as the x-direction profiles of species at initial time.
Output
The developed TGV are displayed in the figures below.
Reference
A.Abdelsamie, G.Lartigue, C.E.Frouzakis, D.Thevenin, The taylor-green vortex as a benchmark for high-fidelity combustion simulations using low-mach solvers, Computers & Fluids 223 (2021): 104935.