A PDF projection method: A pressure algorithm for stand-alone transported PDFs

摘要: In this paper, a new formulation of the projection approach is introduced for stand-alone probability density function (PDF) methods. The method suitable applications in low-Mach number transient turbulent reacting flows. based on fractional step which first advection–diffusion–reaction equations are modelled and solved within particle-based PDF to predict an intermediate velocity field. Then mean field projected onto space where continuity satisfied. approach, Poisson equation Eulerian grid obtain pressure interpolated at location each stochastic Lagrangian particle. avoids time derivatives (due convection) as well second-order spatial derivatives. This turn eliminates major sources instability presence noise that inherent particle-ba...