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Investigations of Gas–Particle Two-Phase Flow in Swirling Combustor by the Particle Stokes Numbers
| Content Provider | MDPI |
|---|---|
| Author | Liu, Yang Li, Guohui |
| Copyright Year | 2021 |
| Description | Gas turbulence modulations and particle dispersions of swirling gas–particle two-phase flow in the combustor is investigated under the large spans of the particle Stokes numbers. To fully consider the preferential concentrations and anisotropic dispersions of a particle, a kinetic frictional stress model coupled with a second-order moment two-phase turbulent model and granular temperature equation is improved. The proposed modeling and simulations are in good agreement with the experimental validations. Results show turbulent modulations and particle dispersions exhibit strongly anisotropic characteristics, keeping a close relationship with flow structure. The axial gas velocity and RMS fluctuation velocity of 45.0-μm EGP was approximately 5.0 times and 3.0 times greater than 1000.0 μm Copper particles, and their axial particle velocity was 0.25 times and twice greater than those of 45.0 μm EGP. The degree of modulation in the axial–radial direction is larger than those of radial–tangential and axial–tangential direction. Particle dispersions are sensitive to particle diameter parameters and intensified by higher Stokes number. |
| Starting Page | 951 |
| e-ISSN | 22279717 |
| DOI | 10.3390/pr9060951 |
| Journal | Processes |
| Issue Number | 6 |
| Volume Number | 9 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-05-27 |
| Access Restriction | Open |
| Subject Keyword | Processes Aerospace Engineering Gas Turbulence Modulations Particle Dispersions Swirling Gas–particle Turbulent Flow Kinetic Friction Stress Model Modeling and Simulation |
| Content Type | Text |
| Resource Type | Article |
