CAJ | 학술논문

采用 RNGk-ε紊流模型与 VOF 方法对溢洪道斜切型挑坎挑射水舌进行了水气二相流三维数值模拟。计算得到了空中水舌形态、水舌挑距、水舌入水角度及入水速度，模拟结果与模型试验和理论计算结果吻合良好，分析了空中水舌及水舌入水区域的流场、水舌入水位置、紊动能κ和紊动能耗散率ε的分布规律以及提高水舌数值模拟精度的措施。论文研究结果表明本数值模拟方法对类似工程基本可以代替模型试验，从而提高研究效率，并为工程优化设计及运行提供科学依据。
채용 RNGk-ε문류모형여 VOF 방법대일홍도사절형도감도사수설진행료수기이상류삼유수치모의。계산득도료공중수설형태、수설도거、수설입수각도급입수속도，모의결과여모형시험화이론계산결과문합량호，분석료공중수설급수설입수구역적류장、수설입수위치、문동능κ화문동능모산솔ε적분포규률이급제고수설수치모의정도적조시。논문연구결과표명본수치모의방법대유사공정기본가이대체모형시험，종이제고연구효솔，병위공정우화설계급운행제공과학의거。
In order to study the hydraulic characteristics of jet nappe in open air,RNG k-ε turbulent mod?el and VOF water-air two phases model were applied to simulate the water-air two-phase jet nappe from a beveled flip bucket to a plunge pool. The calculated shape of water tongue,horizontal length,incidence ve?locity and angle of the jet nappe are in good agreement with the data obtained in experiments and theoreti?cal results, what’s more, the distribution of flow field, turbulent kinetic energy and turbulent dissipation rate of jet nappe are analyzed. The result indicates that model experiment can be replaced by the numeri?cal simulation effectively to some extent. Furthermore,it also can provide some data for engineering design.