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Volume 27 Issue 1
Feb.  2006
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SHI Xiao-bo, LUO Rui, WANG Zhou. Modeling of Accident Scenario Caused by Total Blockage of Single Subassembly in a Fast Reactor and its Validation[J]. Nuclear Power Engineering, 2006, 27(1): 37-42.
Citation: SHI Xiao-bo, LUO Rui, WANG Zhou. Modeling of Accident Scenario Caused by Total Blockage of Single Subassembly in a Fast Reactor and its Validation[J]. Nuclear Power Engineering, 2006, 27(1): 37-42.

Modeling of Accident Scenario Caused by Total Blockage of Single Subassembly in a Fast Reactor and its Validation

  • Received Date: 2004-09-06
  • Rev Recd Date: 2004-11-23
  • Available Online: 2025-07-29
  • In order to predict the accident scenario caused by total inlet blockage of single subassembly at full power in a fast reactor,a calculational model was developed according to SCARABEE-N subassembly melting and propagation tests.In the model,sodium thermal-hydraulics was described by a two-fluid sub-channel model.The motion of melting cladding and melting fuel was dealt with very simple approach similar to that of SURFASS code.The behavior of UO2-steel mixed boiling pool was determined by a one dimen-sional semi-empirical model,in which the distribution of void fraction was calculated by drift flux model,heat transfer coefficient between the boiling pool and the wall was determined by modified Greene correla-tion,the temperature field and thickness of solidified UO2 crust were obtained by solving enthalpy model.Calculation for SCARABEE BE+1 experiment was performed to validate the model,the results approxi-mately agree with the experimental observation.

     

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