HYBRID LARGE EDDY SIMULATION/LAGRANGIAN STOCHASTIC MODEL FOR TURBULENT PASSIVE AND REACTIVE SCALAR DISPERSION IN A PLANE JET
HYBRID LARGE EDDY SIMULATION/LAGRANGIAN STOCHASTIC MODEL FOR TURBULENT PASSIVE AND REACTIVE SCALAR DISPERSION IN A PLANE JET
复制标题
平面射流中湍流无源和无功标量色散的混合大涡模拟/拉格朗日随机模型
DOI：
10.1080/00986445.2011.591216
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发表时间：
2012
影响因子：
2.5
通讯作者：
I. Vinković
中科院分区：
文献类型：
--
作者：
C. L. Ribault;S. Simoëns;I. Vinković
采用大涡模拟（LES）-拉格朗日混合模型计算了非均匀湍流中的被动和反应标量弥散。用拉格朗日方法跟踪流体粒子。为了获得亚网格尺度下流体粒子的速度分量，拉格朗日随机亚网格模型与欧拉大涡模拟在亚网格尺度上耦合。一个额外的配对交换模型是用来考虑分子扩散。一个二级不可逆的化学反应被认为是发生在每个流体粒子。验证是通过比较作为一个被动标量的混合物分数的被动标量模拟。LES/拉格朗日模型的结果进行了比较与实验结果和纯欧拉LES被动标量输运方程求解。这项工作的目的是测试模型和它的能力，重现不均匀的反应情况下。
A hybrid large eddy simulation (LES)-Lagrangian model is tested by computing passive and reactive scalar dispersion in inhomogeneous turbulent flows. Fluid particles are tracked in a Lagrangian way. In order to obtain the subgrid scale velocity component of fluid particles, a Lagrangian stochastic subgrid model is coupled at the subgrid scale level with the Eulerian LES. An additional pairing exchange model is used to take into account molecular diffusion. A second-order irreversible chemical reaction is considered to take place within each fluid particle. Validation is achieved by comparing the mixture fraction that behaves as a passive scalar to a passive scalar simulation. The results of the LES/Lagrangian modeling are compared with experimental results and with pure Eulerian LES where a passive scalar transport equation is solved. The objective of the work is to test the model and its ability to reproduce inhomogeneous reactive cases.
DOI：
10.1063/1.857955
发表时间：
1991-07-01
期刊：
PHYSICS OF FLUIDS A-FLUID DYNAMICS
影响因子：
--
作者：
GERMANO, M;PIOMELLI, U;CABOT, WH
通讯作者：
CABOT, WH