Computational and Experimental Modeling of Multidirectional Gas Flows inside a Rectangular Furnace Channel for Sintering Nuclear Fuel Pellets
https://doi.org/10.1134/S2304487X21040118
Abstract
The oxygen concentration distribution in argon inside the mockup channel and the furnace channel for sintering uranium-plutonium nitride fuel pellets at room temperature is modeled numerically and experimentally. The numerical modeling is performed within the CFD model of the furnace channel developed with Ansys Fluent software. The CFD model is tested and verified using previous experimental data on the distribution of oxygen concentrations in argon obtained on a specifically designed test bench for gas-dynamic studies of the furnace channel for sintering uranium–plutonium nitride fuel pellets. The study reports the calculated and experimental possibility in principle to implement a three-zone separation of gases in a furnace channel with specific nitrogen and argon concentrations required for sintering nuclear fuel pellets. The CFD model satisfactorily describes the gas-dynamic processes in the sintering furnace channel in the fuel pellet heating, sintering, and cooling zones. The best agreement between the calculated and experimental concentrations is reached in the central part of the channel (in the area of location of the fuel pellet boats). The calculated concentrations of oxygen in argon exceed the experimental ones almost everywhere, except for several points on the surface of the supporting plates with boat dummies near the oxygen supply unit. The difference between the calculated and experimental oxygen concentrations on the surface of the supporting plates with the boat dummies is in the range from 0.1 to 6.6 vol %. The CFD model can be used to select the parameters for the furnace channel to ensure compliance with the established requirements for the composition of gaseous media at operating temperatures.
About the Authors
R. N. Shamsutdinov
Sosny R&D Company
Russian Federation
Russian Federation
433507
Ul’yanovskaya oblast
Dimitrovgrad
S. V. Pavlov
Sosny R&D Company
Russian Federation
Russian Federation
433507
Ul’yanovskaya oblast
Dimitrovgrad
I. V. Kuzmin
Sosny R&D Company
Russian Federation
Russian Federation
433507
Ul’yanovskaya oblast
Dimitrovgrad
A. Yu. Leshchenko
Sosny R&D Company
Russian Federation
Russian Federation
433507
Ul’yanovskaya oblast
Dimitrovgrad
M. I. Ilyashik
Proryv Company
Russian Federation
Russian Federation
107140
Moscow
M. K. Gorbachev
Proryv Company
Russian Federation
Russian Federation
107140
Moscow
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Review
For citations:
Shamsutdinov R.N., Pavlov S.V., Kuzmin I.V., Leshchenko A.Yu., Ilyashik M.I., Gorbachev M.K. Computational and Experimental Modeling of Multidirectional Gas Flows inside a Rectangular Furnace Channel for Sintering Nuclear Fuel Pellets. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2021;10(4):363-374. (In Russ.) https://doi.org/10.1134/S2304487X21040118
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