Granular Pseudo-Fluid Large-Eddy Simulation Study of Aeolian Sand Transport Near a Bed Surface

doi:10.7652/xjtuxb201401011

您当前的位置：

首页 >

文章列表页 >

Granular Pseudo-Fluid Large-Eddy Simulation Study of Aeolian Sand Transport Near a Bed Surface

更新时间：2025-07-09

- Granular Pseudo-Fluid Large-Eddy Simulation Study of Aeolian Sand Transport Near a Bed Surface
- Vol. 48, Issue 1, Pages: 60-66(2014)
- 作者机构：
  
  西安交通大学流体机械及工程系,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201401011
  CLC： X169;O359
- Online First：10 January 2014，
  
  Published：2014
- 稿件说明：
移动端阅览
Granular Pseudo-Fluid Large-Eddy Simulation Study of Aeolian Sand Transport Near a Bed Surface[J]. 2014, 48(1): 60-66.
DOI：

Granular Pseudo-Fluid Large-Eddy Simulation Study of Aeolian Sand Transport Near a Bed Surface[J]. 2014, 48(1): 60-66. DOI： 10.7652/xjtuxb201401011.

摘要

通过气相大涡模拟与基于颗粒动理学理论的颗粒相湍流拟流体模型进行耦合

对近床面风沙气固两相三维运动进行了数值计算。相同来流风速下

对跃移层内沙相速度、沙相浓度及沙粒脉动均方根速度沿近床面高度变化进行了统计分析

对比了模拟参数结果与相关实验值之间的差异。结果表明:所建计算模型能较好地揭示近床面风沙流特性

低沙相浓度运动模拟中2种曵力系数模型计算得到的各个宏观参数统计量趋于一致; 跃移层内沙相平均流向速度随近床面高度的增加呈递增趋势

沙相浓度随近床面高度的增加呈递减趋势

沙相流向脉动均方根速度在跃移底层呈现单一峰值状。模拟结果获得了与相关实验结论相类似的变化规律

得出准确选取沙粒碰撞弹性恢复系数是准确揭示沙相速度脉动强弱的关键。

Abstract

Three dimensional transport of gas-solid two-phase aeolian sand was simulated based on coupling of gas-phase large-eddy simulation(LES)and pseudo-fluid model where the kinetic theory for granular flow(KTGF)forms the basis for the turbulence modeling in the solid phase. The vertical profile of the mean horizontal velocity

the concentration and the horizontal root-mean-square(RMS)velocity fluctuation of blown sand near the surface of sand bed were analyzed statistically at the same free-stream wind velocity. The distributions of different statistical parameters obtaining from simulation and experiment were compared. The results show that the simulating model can reveal the blowing sand field characteristics quite well. The same distribution trends of statistical parameters are found for computational results with two different drag models in dilute aeolian sand transport. Within the saltation layer

the mean horizontal velocity of blown sand increases with height

but the concentration decreases with an increase in height. The horizontal RMS velocity fluctuation shows a typical single peak in the lower part of the saltation layer. The similar changing trends are obtained from simulating and relative literature data. The actual choice for the value of the restitution coefficient plays the key role in revealing the intensity of sand velocity fluctuation.

关键词

Keywords

references

KANG L Q. Discrete particle model of aeolian sand transport: comparison of 2D and 2.5D simulations[J]. Geomorphology, 2012, 139/140(15): 536-544.

李志强, 王元, 王丽, 等. 风沙流中近床面沙粒三维运动的LES-DEM 分析[J]. 空气动力学学报, 2011, 29(6): 784-788.

LI Zhiqiang, WANG Yuan, WANG Li, et al. LES-DEM study of 3-D motion of sand particles nearing bed in aeolian sand transport[J]. Acta Aerodynamica Sinica, 2011, 29(6): 784-788.

李静海, 欧阳洁. 颗粒流体复杂系统的多尺度模拟[M]. 北京: 科学出版社, 2005: 142-199.

CHIESA M, MATHIESEN V, MELHEIM J A, et al. Numerical simulation of particulate flow by the Eulerian-Lagrangian and the Eulerian-Eulerian approach with application to a fluidized bed[J]. Computers and Chemical Engineering, 2005, 29(2): 291-304.

刘大有, 董飞, 贺大良. 风沙二相流运动特点的分析[J]. 地理学报, 1996, 51(5): 434-444.

LIU Dayou, DONG Fei, HE Daliang. An analysis of the characters of blown sands[J]. Acta Geographica Sinica, 1996, 51(5): 434-444.

顾兆林. 风扬粉尘-近地层湍流与气固两相流[M]. 北京: 科学出版社, 2010: 79.

顾正萌, 郭烈锦. 沙粒跃移运动的动理学模拟[J]. 工程热物理学报, 2004, 25(S1): 79-82.

GU Zhengmeng, GUO Liejin. Simulation of sand saltation flow with kinetic theory[J]. Journal of Engineering Thermophysics, 2004, 25(S1): 79-82.

周芳, 祁海鹰, 由长福, 等. 有限空间风沙流动数值模拟及边界条件问题[J]. 清华大学学报: 自然科学版, 2004, 44(8): 1079-1082.

ZHOU Fang, QI Haiying, YOU Changfu, et al. Numerical simulation of wind-sand current and boundary conditions in a limited space[J]. Journal of Tsinghua University: Sci Tech, 2004, 44(8): 1079-1082.

武生智, 任春勇. 基于欧拉双流体模型的风沙运动模拟[J]. 兰州大学学报: 自然科学版, 2012, 48(1): 104-107.

WU Shengzhi, REN Chunyong. Numerical simulation of wind blown sand based on the Eulerian model[J]. Journal of Lanzhou University: Natural Sciences, 2012, 48(1): 104-107.

PIOMELLI U, BALARAS E. Wall-layer models for large eddy simulations[J]. Annu Rev Fluid Mech, 2002, 34(1): 349-374.

LU H L, GIDASPOW D. Hydrodynamics of binary fluidization in a riser: CFD simulation using two granular temperatures[J]. Chemical Engineering Science, 2003, 58(16): 3777-3792.

FELICE R D. The voidage function for fluid-particle interaction systems[J]. International Journal of Multiphase Flow, 1994, 20(1): 153-159.

曾卓雄. 稠密两相流动湍流模型及其应用[M]. 北京: 机械工业出版社, 2012: 10-19.

SYAMLAL M. MFIX documentation numerical technique, DOE/MC 31346-5824[R]. Washington DC, USA: DOE, 1998: 24.

JOHNSON P C, JACKSON R. Frictional-collisional constitutive relations for granular materials, with application to plane shearing[J]. Journal of Fluid Mechanics, 1987, 176(1): 67-93.

ZHANG W, WANG Y, LEE S J. Simultaneous PIV and PTV measurements of wind and sand particle velocities[J]. Exp Fluids, 2008, 45(2): 241-256.

LIU X P, DONG Z B. Experimental investigation of the concentration profile of a blowing sand cloud[J]. Geomorphology, 2004, 60(3/4): 371-381.

MATHIESEN V, SOLBERG T, HJERTAGER B H. An experimental and computational study of multiphase flow behavior in a circulating fluidized bed[J]. International Journal of Multiphase Flow, 2000, 26(3): 387-419.

KANG L Q, GUO L J. Wind tunnel experimental investigation of sand velocity in aeolian sand transport[J]. Geomorphology, 2008, 97(3/4): 438-450.

HAFF P K, ANDERSON R S. Grain scale simulations of loose sedimentary beds: the example of grain-bed impacts in aeolian saltation[J]. Sedimentology, 1993, 40(2): 175-198.

周晓斯,王元,李志强.小尺度新月形沙丘背风侧流场特性的大涡模拟分析.2013,47(707):114-119.[doi:10.7652/xjtuxb201307021]

贾攀,王元,张洋.缩尺沙丘演化特性的风洞实验研究.2013,47(5):67-71.[doi:10.7652/xjtuxb201305012]

贾攀,王元,张洋.RM-PTV中选取候选粒子的形心DT网格方法.2013,47(1):80-84.[doi:10.7652/xjtuxb201301016]

贾攀,王元,张洋.松弛迭代粒子追踪测速法独立性改进.2012,46(1):120-124.[doi:10.7652/xjtuxb201201022]

刘江,王元,杨斌.高频测量输沙浓度对湍流脉动的频率响应.2010,44(11):113-118.[doi:10.7652/xjtuxb201011023]

李志强,王元,张洋.跃移沙粒运动参数的数字图像分析.2010,44(7):109-113.[doi:10.7652/xjtuxb201007024]

王元,金文,何文博.锯齿型微通道内流流场的微尺度粒子图像测量.2009,43(9):109-113.[doi:10.7652/xjtuxb200909 024]

刘江,王元.利用静态小波变换的非定常阵风分析与模拟.2009,43(7):74-78.[doi:10.7652/xjtuxb200907016]

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Steady and Pulsed Vortex Generator Jets Control of Flow Separation in Rectangle Diffuser

Large-Eddy Simulation on Boundary Separation of High-Lift Low-Pressure Turbine Blade with Synthetic Jet Control

Knowledge Graph Representation Learning Driven by Semantic Discrimination and Subgraph Integration

A Structure-Semantics-Residual Collaborative Image Compression Framework：Towards Privacy Protection and High-Fidelity Reconstruction

Effects of Expansion Angle Crater Film Hole on the Film Cooling Characteristics of a Double-Wall Structure

Related Author

谢永慧 1

樊涛 1

张荻 1

叶冬挺 1

张荻 1

蓝吉兵 1

谢永慧 1

Related Institution

School of Energy and Power Engineering, Xi'an Jiaotong University

Shanghai Electric Power Generation Equipment Co. Ltd.

⁰