CAJ | 학술논문

为了计算快堆蒸汽发生器小泄漏后钠水反应产物的传输扩散，对快堆壳管式蒸汽发生器内稳态钠流场进行了三维数值模拟，建立了蒸汽发生器内钠流场三维数值模型。管束对钠流的影响用分布阻力、体积多孔率、面渗透率来模拟，并根据横掠管束与纵掠管束的压力阻力关系式来关联管束的分布阻力。采用k-ε湍流模型，壳和支撑板壁面采用壁面函数法来处理。模型计算压降与实验数据比较，二者吻合较好。
위료계산쾌퇴증기발생기소설루후납수반응산물적전수확산，대쾌퇴각관식증기발생기내은태납류장진행료삼유수치모의，건립료증기발생기내납류장삼유수치모형。관속대납류적영향용분포조력、체적다공솔、면삼투솔래모의，병근거횡략관속여종략관속적압력조력관계식래관련관속적분포조력。채용k-ε단류모형，각화지탱판벽면채용벽면함수법래처리。모형계산압강여실험수거비교，이자문합교호。
In order to calculate the sodium-water reaction products transport and diffusion in occurrence of small water leak in steam generator, a three dimensional numerical model of sodium steady flow in steam generator of fast reactors is established. The numerical model uses the distributed resistance along with volumetric porosity and surface permeability to model the effect of tubes on sodium flow in the steam generator. The distributed resistance of banks of tubes is correlated by the pressure drop formula of the flow perpendicular to tubes and the flow parallel to the tubes. Turbulence effects are modeled using a k-ε model. Shell and support plate walls are modeled using the wall function approach. Good agreement is obtained between the computed results and experiments.