Numerical Modeling of Mixing of Chemically Reacting, Non-Newtonian Slurry for Tank Waste Retrieval

Yuen, David A. ; Onishi, Yasuo ; Rustad, James R. ; Michener, Thomas E. ; Felmy, Andrew R. ; Ten, Arkady A. ; Hier, Catherine A.

University of Minnesota, Minneapolis, MN

关键词: Decision Making;    Chemical Reactions;    12 Management Of Radioactive Wastes, And Non-Radioactive Wastes From Nuclear Facilities;    Wastes;    Waste Processing;   

DOI  :  10.2172/833252
RP-ID  :  EMSP-65371--2000
RP-ID  :  FG07-98ER62716
RP-ID  :  833252

美国|英语

来源: UNT Digital Library

【 摘 要 】

Many highly radioactive wastes will be retrieved by installing mixer pumps that inject high-speed jets to stir up the sludge, saltcake, and supernatant liquid in the tank, blending them into a slurry. This slurry will then be pumped out of the tank into a waste treatment facility. Our objectives are to investigate interactions-chemical reactions, waste rheology, and slurry mixing-occurring during the retrieval operation and to provide a scientific basis for the waste retrieval decision-making process. Specific objectives are to: (1) Evaluate numerical modeling of chemically active, non-Newtonian tank waste mixing, coupled with chemical reactions and realistic rheology; (2) Conduct numerical modeling analysis of local and global mixing of non-Newtonian and Newtonian slurries; and (3) Provide the bases to develop a scientifically justifiable, decision-making support tool for the tank waste retrieval operation.