Simulation of sodium boiling experiments with THERMIT sodium version
Name
EL_TR_1982_023.pdf
Size
6.13 MB
Format
Adobe PDF
Checksum (MD5)
007946404447ea2d10d0293eab367bf9
Author(s)
Huh, Kang Yul
Alternative Title
Sodium boiling experiments with THERMIT sodium version, Simulation of.
THERMIT sodium version, Simulation of sodium boiling experiments with.
Date Issued
1982
Publisher
Cambridge, Mass. : Massachusetts Institute of Technology, Energy Laboratory, 1982
Series/Report no.
Energy Laboratory report (Massachusetts Institute of Technology. Energy Laboratory) no. MIT-EL 82-023.
Abstract
Natural and forced convection experiments(SBTF and French) are simulated with the sodium version of the thermal-hydraulic computer code THERMIT. Simulation is done for the test secti- -on with the pressure-velocity boundary condition and subsequ- -ently extended to the whole loop. For the test section simu- -lation, a s.teady-state and transient calculations are perform- -ed and compared with experimental data. For the loop simula- -tion, two methods are used, a simulated 1-D loop and an actual 1-D loop. In the simulated 1-D loop analysis, the vapor densi- -ty is increased by one hundred and two hundred times to avoid the code failure and the results still showed some of the impor- -tant characteristics of the two-phase flow oscillation in a loop. A mathematical model is suggested for the two-phase flow oscillation. In the actual 1-D loop, only the single phase calculation was performed and turned out to be nearly the same as the simulated 1-D loop single phase results.
In the process of simulation, it is discovered that the energy conservation equations of THERMIT fails to conserve energy by a small amount due to interfacial mass transfer and frictional dissipation of mechanical into thermal energy. The problems and applicability of the THERMIT physical models are also discussed.
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