A numerical examination of the two-phase flow inside a hydrocyclone was conducted to quantify the turbulent velocity fluctuations. The simulations were conducted using the large eddy simulation (LES) approach comparing various subgrid-scale models. The numerical results were compared to published LDV data . The study indicated that the tangential velocity is an insensitive parameter for validation because the fluctuations are less pronounced. In contrast, the turbulent fluctuations in the axial and tangential directions show substantial variations when modeled with increasingly larger mesh sizes. The numerical results also confirmed that the RMS velocity profiles predicted by the LES-Smagorinsky model provide a good prediction for the axial turbulent velocity fluctuations. The results also show that the LES-VOF approach predicts the split ratio of the product with a 0.45% error compared to the experimental data.
|Title of host publication||22nd Australasian Fluid Mechanics Conference, AFMC 2020|
|Editors||Hubert Chanson, Richard Brown|
|Publication status||Published (in print/issue) - 16 Dec 2020|
|Event||22nd Australasian Fluid Mechanics Conference, AFMC 2020 - Brisbane, Australia|
Duration: 7 Dec 2020 → 10 Dec 2020
|Name||22nd Australasian Fluid Mechanics Conference, AFMC 2020|
|Conference||22nd Australasian Fluid Mechanics Conference, AFMC 2020|
|Period||7/12/20 → 10/12/20|
Bibliographical notePublisher Copyright:
© 2020 22nd Australasian Fluid Mechanics Conference, AFMC 2020. All rights reserved.
- Large eddy simulation
- Subgrid-scale model
- Turbulence fluctuation