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Title: ANALYSIS OF TURBULENT MIXING JETS IN LARGE SCALE TANK

Abstract

Flow evolution models were developed to evaluate the performance of the new advanced design mixer pump for sludge mixing and removal operations with high-velocity liquid jets in one of the large-scale Savannah River Site waste tanks, Tank 18. This paper describes the computational model, the flow measurements used to provide validation data in the region far from the jet nozzle, the extension of the computational results to real tank conditions through the use of existing sludge suspension data, and finally, the sludge removal results from actual Tank 18 operations. A computational fluid dynamics approach was used to simulate the sludge removal operations. The models employed a three-dimensional representation of the tank with a two-equation turbulence model. Both the computational approach and the models were validated with onsite test data reported here and literature data. The model was then extended to actual conditions in Tank 18 through a velocity criterion to predict the ability of the new pump design to suspend settled sludge. A qualitative comparison with sludge removal operations in Tank 18 showed a reasonably good comparison with final results subject to significant uncertainties in actual sludge properties.

Authors:
; ; ;
Publication Date:
Research Org.:
SRS
Sponsoring Org.:
USDOE
OSTI Identifier:
902849
Report Number(s):
WSRC-STI-2007-00160
Journal ID: ISSN 0098-2202; JFEGA4; TRN: US0703057
DOE Contract Number:
DE-AC09-96SR18500
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Fluids Engineering
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; FLOW MODELS; FLUID MECHANICS; MIXERS; PERFORMANCE; WASTE RETRIEVAL; SLUDGES; TURBULENT FLOW; PUMPS; JETS; SAVANNAH RIVER PLANT; STORAGE FACILITIES; RADIOACTIVE WASTE STORAGE

Citation Formats

Lee, S, Richard Dimenna, R, Robert Leishear, R, and David Stefanko, D. ANALYSIS OF TURBULENT MIXING JETS IN LARGE SCALE TANK. United States: N. p., 2007. Web.
Lee, S, Richard Dimenna, R, Robert Leishear, R, & David Stefanko, D. ANALYSIS OF TURBULENT MIXING JETS IN LARGE SCALE TANK. United States.
Lee, S, Richard Dimenna, R, Robert Leishear, R, and David Stefanko, D. Wed . "ANALYSIS OF TURBULENT MIXING JETS IN LARGE SCALE TANK". United States. doi:. https://www.osti.gov/servlets/purl/902849.
@article{osti_902849,
title = {ANALYSIS OF TURBULENT MIXING JETS IN LARGE SCALE TANK},
author = {Lee, S and Richard Dimenna, R and Robert Leishear, R and David Stefanko, D},
abstractNote = {Flow evolution models were developed to evaluate the performance of the new advanced design mixer pump for sludge mixing and removal operations with high-velocity liquid jets in one of the large-scale Savannah River Site waste tanks, Tank 18. This paper describes the computational model, the flow measurements used to provide validation data in the region far from the jet nozzle, the extension of the computational results to real tank conditions through the use of existing sludge suspension data, and finally, the sludge removal results from actual Tank 18 operations. A computational fluid dynamics approach was used to simulate the sludge removal operations. The models employed a three-dimensional representation of the tank with a two-equation turbulence model. Both the computational approach and the models were validated with onsite test data reported here and literature data. The model was then extended to actual conditions in Tank 18 through a velocity criterion to predict the ability of the new pump design to suspend settled sludge. A qualitative comparison with sludge removal operations in Tank 18 showed a reasonably good comparison with final results subject to significant uncertainties in actual sludge properties.},
doi = {},
journal = {Journal of Fluids Engineering},
number = ,
volume = ,
place = {United States},
year = {Wed Mar 28 00:00:00 EDT 2007},
month = {Wed Mar 28 00:00:00 EDT 2007}
}
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