Computer modeling of ceramic melters to assess impacts of process and design variables on performance
Results of numerical modeling of the melt pool of high-level liquid waste vitrification melters which demonstrate impact of design variables are presented. They are in support of programs to evaluate melter operation characteristics and performance. Included are investigations into power skewing and alternating current electric field phase angle in a dual electrode pair reference design. Power skewing, the ratio of upper-to-lower electrode pair power, can lead to stratification which may enhance heating of the cold cap regions, but may also enhance development of a sludge layer. Phase angle between alternating current fields affects joule heat and temperature fields. In a three-electrode, sloped-bottom advanced design, bimodal convective stability is investigated to assess impact of perturbations. Electrode cooling and asymmetries of the cold cap and exterior boundaries can affect melt convective pattern which in turn may impact mixing uniformity, cold cap heat transfer, and development of sludge layers. 8 refs., 9 figs.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (USA)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5663715
- Report Number(s):
- PNL-SA-19418; CONF-9104261-4; ON: DE91013668
- Resource Relation:
- Conference: 5. international symposium on ceramics in nuclear and hazardous waste management, Cincinnati, OH (USA), 29 Apr - 3 May 1991
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
CERAMIC MELTERS
COMPUTERIZED SIMULATION
DESIGN
CONVECTION
ELECTRODES
HEAT TRANSFER
PERFORMANCE
VITRIFICATION
ELECTRIC FURNACES
ENERGY TRANSFER
FURNACES
MASS TRANSFER
SIMULATION
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
052001 - Nuclear Fuels- Waste Processing