Implicitly coupled phase fraction equations for polydisperse flows
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2021-11-28
Type
ArticleKAUST Department
Mechanical EngineeringPhysical Science and Engineering (PSE) Division
Mechanical Engineering Program
Clean Combustion Research Center
KAUST Grant Number
OSR-2017-CRG6-3409.03Date
2020-11-28Embargo End Date
2021-11-28Submitted Date
2020-06-16Permanent link to this record
http://hdl.handle.net/10754/666258
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This work presents the implementation, verification and the validation of an incompressible Eulerian multi-fluid model for polydisperse flows. The proposed model uses a novel monolithic, i.e. implicitly coupled phase continuity equation for an arbitrary number of fluids, where the breakup source and sink terms are handled implicitly in the block-system. The implemented model is tested for an upward bubbly flow inside a large vertical pipe. The selected flow conditions exhibit both breakup and coalescence. The grid refinement study is conducted on four structured grids with varying levels of refinement. In the validation section, the numerical results are compared to the TOPFLOW experimental measurements. The last presented test examines the performance of the novel implicitly coupled phase continuity equation to the corresponding segregated formulation and the standard segregated formulation. The performance is evaluated by comparing the conservation error over the non-linear iterations. The presented model exhibits good agreement with the experimental measurements and gives stable results on various grids with different levels of refinement. Moreover, the implicit coupling reduces the conservation error during the calculation.Citation
Keser, R., Ceschin, A., Battistoni, M., Im, H. G., & Jasak, H. (2020). Implicitly coupled phase fraction equations for polydisperse flows. International Journal for Numerical Methods in Fluids. doi:10.1002/fld.4945Sponsors
King Abdullah University of Science and Technology, Grant/Award Number:OSR-2017-CRG6-3409.03; CroatianScience Foundation, Grant/Award Number:DOK-01-2018.Publisher
WileyDOI
10.1002/fld.4945Additional Links
https://onlinelibrary.wiley.com/doi/10.1002/fld.4945ae974a485f413a2113503eed53cd6c53
10.1002/fld.4945