Data Assimilated Computational Fluid Dynamics Algorithm for Combustion

摘要

In this study, we focus on developing and understanding a multialgorithm that combines the assimilation algorithm, the computational fluid dynamics algorithm, and the experimental observation system, and applying it to solve a scalar convection-diffusion-reaction equation and a two-dimensional laminar flame propagation problem. The data assimilation technique is ensemble-based. The CFD numerical model is based on a fourth-order finite-volume method. This study is, perhaps, a one-of-a-kind early study on applying data assimilation to combustion. Results of the convection-diffusion-reaction problem and the two-dimensional flame problem demonstrate the validity of the data assimilated computational fluid dynamics algorithm for combustion. This study establishes a base framework for future investigations of multidimensional turbulent combustion, since they all involve three physical processes, namely, convection, diffusion, and reaction.