CAJ | 학술논문

运用Fluent软件采用标准k-ε紊流模型和VOF法追踪自由表面，模型进流边界按压力进口边界条件，采用UDF函数定义水流进口断面压强分布，对某水库溢洪道泄洪进行了三维数值模拟，得到了溢洪道泄流量、沿程水面线、底板压强及流速分布，计算值与试验值吻合较好。表明采用压力进口边界条件和UDF函数定义水流进口断面压强分布研究溢洪道泄流是可行的，可在泄水建筑物体形优化设计中广泛应用。
운용Fluent연건채용표준k-ε문류모형화VOF법추종자유표면，모형진류변계안압력진구변계조건，채용UDF함수정의수류진구단면압강분포，대모수고일홍도설홍진행료삼유수치모의，득도료일홍도설류량、연정수면선、저판압강급류속분포，계산치여시험치문합교호。표명채용압력진구변계조건화UDF함수정의수류진구단면압강분포연구일홍도설류시가행적，가재설수건축물체형우화설계중엄범응용。
Based on the standard k-ε turbulence model and VOF method for tracking free surface,the numerical model adopts pressure-inlet boundary conditions, using the UDF function to define the pressure distribution of the inflow section. A 3-D numerical simulation of the spillway discharge for a certain reservoir is conducted. And the discharge capacity,the water line, the bottom pressure distribution and velocity distribution are studied. The calculated value results correspond well with the experimental data,suggesting that adopting the pressure-inlet boundary condition and using the UDF function to define the pressure distribution of the inflow section to study the spillway discharge is feasible. This method is also of high practicability and can be widely used in optimization of the discharge structure.