AN EFFICIENT LAGRANGIAN TRAJECTORY MODEL FOR PREDICTING COMPLEX TURBULENT TWO-PHASE FLOWS USING THE CURVILINEAR COORDINATES

X.-Q. Chen; J. C. F. Pereira

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AN EFFICIENT LAGRANGIAN TRAJECTORY MODEL FOR PREDICTING COMPLEX TURBULENT TWO-PHASE FLOWS USING THE CURVILINEAR COORDINATES

机译：利用曲线坐标预测复杂湍流两相流的有效拉格朗日轨迹模型

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In this article, a numerical procedure is developed to extend the SPEED (Stochastic-Probabilistic Efficiency Enhanced Dispersion) model to the non-orthogonal curvilinear coordinates for the efficient prediction of dispersed turbulent two-phase flows with complex geometries. The partial-transformation approach using the Cartesian velocity vectors is employed to compute the fluid and dispersed flow fields. The Lagrangian trajectory model accounts for both the stochastic and probabilistic effects of discrete particle dispersion induced by fluid turbulence. A robust numerical algorithm is developed to determine the probability distribution in irregular Eulerian control volumes. The extended SPEED model is validated against a 90 deg turbulent bend flow laden with solid particles. It is found that the computational efficiency is greatly enhanced by using a very fewer number of particle trajectories than the conventional stochastic model while achieving the noise-free computational results.

机译：在本文中，开发了一种数值程序以将SPEED（随机概率效率增强的色散）模型扩展到非正交曲线坐标，以有效地预测具有复杂几何形状的分散湍流两相流。使用笛卡尔速度矢量的部分转换方法用于计算流体和分散流场。拉格朗日轨迹模型考虑了流体湍流引起的离散粒子离散的随机和概率效应。开发了鲁棒的数值算法来确定不规则欧拉控制量中的概率分布。扩展的SPEED模型针对充满固体颗粒的90度湍流折弯流进行了验证。已经发现，通过使用比常规随机模型少得多的粒子轨迹，可以大大提高计算效率，同时实现无噪声的计算结果。

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《International Communications in Heat and Mass Transfer》 |1997年第5期|p.621-632|共12页
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X.-Q. Chen; J. C. F. Pereira;
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正文语种 eng
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1. An efficient Lagrangian trajectory model for predicting complex turbulent two-phase flows using the curvilinear coordinates [J] . X. -Q. Chen, J. C. F. Pereira International Communications in Heat and Mass Transfer . 1997,第5期

机译：使用曲线坐标预测复杂湍流两相流的有效拉格朗日轨迹模型
2. Computation of particle dispersion in turbulent liquid flows using an efficient lagrangian trajectory model [J] . X.-Q. Chen, J. C. F. Pereira International Journal for Numerical Methods in Fluids . 1998,第3期

机译：使用有效的拉格朗日轨迹模型计算湍流中的颗粒扩散
3. EFFICIENT PARTICLE TRACKING ALGORITHM FOR TWO-PHASE FLOWS IN GEOMETRIES USING CURVILINEAR COORDINATES [J] . Chen XQ. Numerical Heat Transfer, Part A. Application: An International Journal of Computation and Methodology . 1997,第4期

机译：曲线坐标的几何两相流有效粒子跟踪算法
4. A JOINT EULERIAN/LAGRANGIAN MODEL FOR DISPERSED TURBULENT TWO-PHASE FLOWS [C] . Miles R. Elsden, Philip Hutchinson ASME Fluids Engineering Division Meeting . 1996

机译：用于分散湍流两相流动的联合欧拉/拉格朗日模型
5. New near -wall models with dynamic subgrid scale closure for large eddy simulation in curvilinear coordinates for complex geometries. [D] . Barsamian, Hagop Raffi. 2000

机译：新的近壁模型具有动态子网格比例封闭功能，可在复杂几何形状的曲线坐标系中进行大涡模拟。
6. Numerical investigation of indoor particulate contaminant transport using the Eulerian-Eulerian and Eulerian-Lagrangian two-phase flow models [O] . Yihuan Yan, Xiangdong Li, Kazuhide Ito -1

机译：欧拉-欧拉和欧拉-拉格朗日两相流模型对室内颗粒污染物迁移的数值研究
7. Guidelines for the formulation of Lagrangian stochastic models for particle simulations of single-phase and dispersed two-phase turbulent flows [O] . Minier, J. -P., Chibbaro, S., Pope, S. B. 2015

机译：拉格朗日随机模型的制定指南单相和分散两相湍流的粒子模拟
8. Equations of Motion and Two-Equation Turbulence Model for Plane or Axisymmetric Turbulent Flows in Body-Oriented Orthogonal Curvilinear Coordinates and Mass-Averaged Dependent Variables [R] . Sislian, J. P. 1978

机译：面向正交曲线坐标和质量平均相关变量的平面或轴对称湍流运动方程和双方程湍流模型

AN EFFICIENT LAGRANGIAN TRAJECTORY MODEL FOR PREDICTING COMPLEX TURBULENT TWO-PHASE FLOWS USING THE CURVILINEAR COORDINATES

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