New non-equilibrium thermal-hydraulic model, (I) Theory.

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概要

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• Corresponding with each non-equilibrium state given by the pressure p, the specific enthalpy of the two-phase mixture h and the void faction α, an equilibrium state defined by p and h is assumed to exist. The relaxation equation for α which relates the non-equili-brium state to the corresponding equilibrium state is derived from the mass and energy equations for the gas phase. The conservation equations for the mixture are spatially differenced in such a way that direct node-node coupling can not take place. Then, the space differencing scheme brings about the three step reduction of the conservation equations, for each of which the physical interpretation is possible. The hydraulic boundary conditions as well as the pump and valve behaviors are incorporated in the model in a natural manner. The model has been implemented in the THYDE-P code to analyze the various dynamic behaviors of the coolant systems.

• 一般社団法人 日本原子力学会の論文

著者

• ASAHI Yoshiro

  Department of Nuclear Engineering, University of Tokyo

• SUZUKI Yuichi

  Suri-giken Co.

関連論文

• On the Two-Point Approximation Equation of Reactor Kinetics
• New non-equilibrium thermal-hydraulic model, (I) Theory.

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