基于曲线坐标系浸没边界方法的折流燃烧室模拟

The high-fidelity numerical simulation of the complex geometry of an aero-engine slinger combustor requires efficient meshing and boundary condition processing methods. We use the implicitly immersed boundary method in curvilinear coordinate system combined with large-eddy simulation and transported probability density function turbulent combustion model to develop the self-developed software and realize the high fidelity simulation of the slinger combustor in WP11. The three main flows in the combustor are accurately resolved in the flow simulation，and the three flows account for about 75%，12.5% and 12.5% of the inlet flow，respectively. The two-phase combustion simulation uses different grid labels for droplet motion in the Lagrangian frame and turbulent combustion in the Eulerian frame，and the simulated outlet radial temperature distribution pattern is consistent with the experiment with an average relative error of 17.95%，indicating that the self-developed software based on this method can accurately simulate the two-phase turbulent combustion phenomenon in the slinger combustor.