A sub-channel analysis code, ATHAS-02, based on a two-fluid two-field model is developed in this study. The semi-implicit numerical solution scheme based on the staggered mesh system is adopted to get the finite diffe...
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A sub-channel analysis code, ATHAS-02, based on a two-fluid two-field model is developed in this study. The semi-implicit numerical solution scheme based on the staggered mesh system is adopted to get the finite difference equations. A pressure-velocity coupling algorithm is applied to iteratively solve the finite-difference equations. Meanwhile, preliminary validation studies are performed based on the in-tube subcooled boiling experiments, the GE 9-rod bundle experiments and the Studsvik bundle experiments. It is found that the predicted results agree well with the experimental data.
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