Modeling gas release from a Bingham plastic slurry and deconvoluting measured data
- Savannah River Site (SRS), Aiken, SC (United States). Savannah River National Lab. (SRNL)
- M-Star CFD, Ellicott City, MD (United States)
Physics-based models for predicting the off-gassing characteristics of agitated slurries are presented. This approach decomposes the system into two separate but coupled slurry and headspace models. The physics driving bubble transport through the slurry and gas mixing within the headspace are discussed. An analytical expression for predicting the time evolution of the headspace concentration using first principles theory is also presented. Predictions from the numerical models, as well as expectations from the analytical solution, both agree with measured off gassing data for two different experimental operating conditions. After benchmarking the numerical model predictions against experimental data, the model was used to make predictions for gas release from a full-scale vessel and to perform sensitivity analyses to examine the sensitivity of gas release to parameters such as yield stress, consistency index, slurry density, bubble size, bubble concentration, and impeller speed.
- Research Organization:
- Savannah River Site (SRS), Aiken, SC (United States); Savannah River National Lab (SRNL), Aiken, SC (United States)
- Sponsoring Organization:
- USDOE Office of Environmental Management (EM)
- Grant/Contract Number:
- 89303321CEM000080
- OSTI ID:
- 1866067
- Report Number(s):
- SRNL-STI-2021-00543
- Journal Information:
- Chemical Engineering Science, Journal Name: Chemical Engineering Science Vol. 255; ISSN 0009-2509
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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