Implications of Upwells as Hydrodynamic Jets in a Pulse Jet Mixed System

Technical Report · Tue Feb 28 04:00:00 EST 2017

DOI:https://doi.org/10.2172/1357719· OSTI ID:1357719

Pease, Leonard F. ^[1]; Bamberger, Judith A. ^[1]; Minette, Michael J. ^[1]

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1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

This report evaluates the physics of the upwell flow in pulse jet mixed systems in the Hanford Tank Waste Treatment and Immobilization Plant (WTP). Although the initial downward flow and radial flow from jets characteristic of pulse jet mixers (PJMs) has been analyzed, the upwells have received considerably less attention despite having significant implications for vessel mixing. Do the upwells behave like jets? How do the upwells scale? When will the central upwell break through? What proportion of the vessel is blended by the upwells themselves? Indeed, how the physics of the central upwell is affected by multiple PJMs (e.g., six in the proposed mixing vessels), non-Newtonian rheology, and significant multicomponent solids loadings remain unexplored.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1357719
• Report Number(s): PNNL--24382 Rev 1.0; 830403000
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS