Adaptive mesh refinement applied to the scalar transported PDF equation in a turbulent jet

作者：Olivieri D A^*; Fairweather M; Falle S A E G

来源：International Journal for Numerical Methods in Engineering, 2010, 84(4): 434-447.

DOI：10.1002/nme.2899

• transported PDF
• adaptive mesh refinement
• finite-volume method
• Reynolds-averaged Navier-Stokes
• molecular mixing

This paper describes a novel solution method for the transported probability density PDF) equation for scalars (compositions). In contrast to conventional solution methods based on the Monte Carlo approach, we use a finite-volume method combined with adaptive mesh refinement (AMR) applied in both physical and compositional space. The obvious advantage of this over a uniform grid is that fine meshes are only used where the solution requires high resolution. The efficiency of the method is demonstrated by a number of tests involving a turbulent jet flow with up to two scalars (both reacting and non-reacting). We find that the AMR calculation can be at a fraction of the computer cost of a uniform grid calculation with the same accuracy.

• 出版日期2010-10-22