Modeling Dense Particle Flow in Multistage and Obstructed Flow Receivers Using High Fidelity Simulations

Mills, Brantley; Pierce, Flint; Djajadiwinata, Eldwin; Saeed, Rageh; Alaqel, Shaker; Saleh, Nader

doi:10.52825/solarpaces.v2i.805

Modeling Dense Particle Flow in Multistage and Obstructed Flow Receivers Using High Fidelity Simulations

Journal Article · Wed Jul 24 00:00:00 EDT 2024 · SolarPACES Conference Proceedings (Online)

DOI:https://doi.org/10.52825/solarpaces.v2i.805· OSTI ID:2438375

Mills, Brantley; Pierce, Flint; ; Saeed, Rageh; Alaqel, Shaker;

Particles are a leading contender for next-generation, concentrating solar power technologies, and the design of the particle receiver is critical to minimize the levelized cost of electricity. Falling particle receivers (FPRs) are a viable receiver concept, but many new designs feature complex particle obstructions that include dense discrete phase flows. This creates additional challenges for modeling as particle-to-particle interactions (i.e., collisions) and particle drag become more complex. To improve upon existing modeling strategies, a CFD-DEM simulation capability was created by coupling two independent codes: Sierra/Fuego and LAMMPS. A suitable receiver model was then defined using a traditional continuum-based model for the air and a granular model for the particle curtain. A sensitivity study was executed using this model to determine the relevance of different granular model inputs on important quantities of interest in obstructed flow FPRs: the particle velocity and curtain opacity. The study showed that the granular model inputs had little effect on the particle velocity magnitude and curtain opacity after an obstruction.

Sponsoring Organization:: USDOE

Grant/Contract Number:: NA0003525

OSTI ID:: 2438375

Journal Information:: SolarPACES Conference Proceedings (Online), Journal Name: SolarPACES Conference Proceedings (Online) Vol. 2; ISSN 2751-9899

Publisher:: TIB Open PublishingCopyright Statement

Country of Publication:: Germany

Language:: English

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