The barely implicit correction algorithm for low-Mach-Number flows II: Application to reactive flows
The barely implicit correction algorithm for low-Mach-Number flows II: Application to reactive flows
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DOI：
10.1016/j.compfluid.2020.104650
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发表时间：
2020-10
影响因子：
2.8
通讯作者：
Joseph D. Chung;Xiao Zhang;C. Kaplan;E. Oran
中科院分区：
文献类型：
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作者：
Joseph D. Chung;Xiao Zhang;C. Kaplan;E. Oran
本文将Barely Implicit Correction（BIC）算法应用于低马赫数反应流的数值模拟。BIC算法是一种求解过程，包括求解Navier-Stokes方程对流部分的显式预测步骤和消除积分时间步长上的声学限制的隐式校正步骤。我们展示了如何将反应过程纳入BIC集成过程。然后将该算法应用于四个测试问题，依次增加难度。首先，一系列的一维火焰计算，表明BIC可以再现正确的火焰特性。其次，二维对流扩散火焰的模拟表明，积分过程可以计算应变扩散火焰的结构。第三，计算了三重火焰，结果表明BIC可以计算复杂的多维放热结构。最后，对三维非定常火旋风的数值模拟表明，该算法可以计算湍流涡流场中复杂的放热结构。这些结果表明，该算法是强大的，稳定的燃烧流动，并可用于研究各种反应流。
In this paper, the Barely Implicit Correction (BIC) algorithm is applied to the simulation of low-Mach-number, reactive flows. The BIC algorithm is a solution procedure consisting of an explicit predictor step to solve the convective portion of the Navier-Stokes equations and an implicit corrector step which removes the acoustic limit on the integration time step. We show how to include reaction processes into the BIC integration procedure. The algorithm is then applied to four test problems with successively increased difficulty. First, a series of one-dimensional flames are computed, showing that BIC can reproduce the correct flame properties. Second, simulations of two-dimensional counter-flow diffusion flames show that the integration procedure can compute the structure of a strained diffusion flame. Third, triple flames are computed and the results show that BIC can compute complex and multi-dimensional heat release structures. Finally, simulations of a three-dimensional, unsteady fire whirl show that the algorithm can compute complex heat release structures in a turbulent vortex flow field. These results indicate that the algorithm is robust, stable for flows with combustion, and can be used to study a wide variety of reactive flows.