A Numerical Study of Aeolian Sand Particle Flow Incorporating Granular Pseudofluid Optimization and Large Eddy Simulation
A numerical investigation of aeolian sand particle flow in atmospheric boundary layer is performed with a Eulerian–Eulerian granular pseudofluid model. In this model, the air turbulence is modelled with a large eddy simulation, and a kinetic–frictional constitutive model incorporating frictional str...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-04-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/11/5/448 |
| _version_ | 1797569288180072448 |
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| author | Yang Zhang Changsong Wu Xiaosi Zhou Yuanming Hu Yuan Wang Bin Yang |
| author_facet | Yang Zhang Changsong Wu Xiaosi Zhou Yuanming Hu Yuan Wang Bin Yang |
| author_sort | Yang Zhang |
| collection | DOAJ |
| description | A numerical investigation of aeolian sand particle flow in atmospheric boundary layer is performed with a Eulerian–Eulerian granular pseudofluid model. In this model, the air turbulence is modelled with a large eddy simulation, and a kinetic–frictional constitutive model incorporating frictional stress and the kinetic theory of granular flow is applied to describe the interparticle movement. The simulated profiles of streamwise sand velocity and sand mass flux agree well with the reported experiments. The quantitative discrepancy between them occurs near the sand bed surface, which is due to the difference in sand sample, but also highlights the potential of the present model in addressing near-surface mass transport. The simulated profiles of turbulent root mean square (RMS) particle velocity suggest that the interparticle collision mainly account for the fluctuation of sand particle movement. |
| first_indexed | 2024-03-10T20:09:49Z |
| format | Article |
| id | doaj.art-c669f09ec5104461b120fdcce769fd26 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-10T20:09:49Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-c669f09ec5104461b120fdcce769fd262023-11-19T23:03:34ZengMDPI AGAtmosphere2073-44332020-04-0111544810.3390/atmos11050448A Numerical Study of Aeolian Sand Particle Flow Incorporating Granular Pseudofluid Optimization and Large Eddy SimulationYang Zhang0Changsong Wu1Xiaosi Zhou2Yuanming Hu3Yuan Wang4Bin Yang5Department of Fluid Machinery and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaDepartment of Fluid Machinery and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaSchool of Chemical Engineering, Northwest University, Xi’an 710069, ChinaState Key Laboratory Base of Eco-hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, ChinaDepartment of Fluid Machinery and Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaSchool of Chemical Engineering, Northwest University, Xi’an 710069, ChinaA numerical investigation of aeolian sand particle flow in atmospheric boundary layer is performed with a Eulerian–Eulerian granular pseudofluid model. In this model, the air turbulence is modelled with a large eddy simulation, and a kinetic–frictional constitutive model incorporating frictional stress and the kinetic theory of granular flow is applied to describe the interparticle movement. The simulated profiles of streamwise sand velocity and sand mass flux agree well with the reported experiments. The quantitative discrepancy between them occurs near the sand bed surface, which is due to the difference in sand sample, but also highlights the potential of the present model in addressing near-surface mass transport. The simulated profiles of turbulent root mean square (RMS) particle velocity suggest that the interparticle collision mainly account for the fluctuation of sand particle movement.https://www.mdpi.com/2073-4433/11/5/448aeolian sand particle flowatmospheric boundary layergranular pseudofluidlarge eddy simulation |
| spellingShingle | Yang Zhang Changsong Wu Xiaosi Zhou Yuanming Hu Yuan Wang Bin Yang A Numerical Study of Aeolian Sand Particle Flow Incorporating Granular Pseudofluid Optimization and Large Eddy Simulation Atmosphere aeolian sand particle flow atmospheric boundary layer granular pseudofluid large eddy simulation |
| title | A Numerical Study of Aeolian Sand Particle Flow Incorporating Granular Pseudofluid Optimization and Large Eddy Simulation |
| title_full | A Numerical Study of Aeolian Sand Particle Flow Incorporating Granular Pseudofluid Optimization and Large Eddy Simulation |
| title_fullStr | A Numerical Study of Aeolian Sand Particle Flow Incorporating Granular Pseudofluid Optimization and Large Eddy Simulation |
| title_full_unstemmed | A Numerical Study of Aeolian Sand Particle Flow Incorporating Granular Pseudofluid Optimization and Large Eddy Simulation |
| title_short | A Numerical Study of Aeolian Sand Particle Flow Incorporating Granular Pseudofluid Optimization and Large Eddy Simulation |
| title_sort | numerical study of aeolian sand particle flow incorporating granular pseudofluid optimization and large eddy simulation |
| topic | aeolian sand particle flow atmospheric boundary layer granular pseudofluid large eddy simulation |
| url | https://www.mdpi.com/2073-4433/11/5/448 |
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