摘要
采用数值模拟方法研究浅水横流中底部水平圆孔热水射流的稀释特性。首先运用量纲分析方法得出了该类流动的影响因素的表达式。并建立了描述热水射流的三维k-ε紊流数学模型。应用基于混合有限分析法的SIMPLE算法进行求解,结合有效的试验资料,检验了数学模型和计算方法的合理有效性,为进一步研究该类流动的数值特性奠定了基础。
The mixing features when a hot water jet near bed enters a shallow cross-flow are studied by numerical simulation. The dimensional analysis is adopted to deduce the expression of effect factors for horizontal hot jet in crossflow. The k-ε turbulence model is employed to simulate the 3D buoyant jets. The SIMPLE arithmetic and the Hybrid Finite Analytic Method (HFAM) are used to obtain the correct pressure and velocity at each grid point. The mathematical model and numerical method are verified by the test data and can be applicable to the numerical studies on initial dilution of horizontal hot water jet discharged near bed in crossflow.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2005年第3期1-4,共4页
Journal of Sichuan University (Engineering Science Edition)
基金
国家自然科学基金资助项目(50479038)
关键词
浅水横流
浮力射流
数值模拟
混合有限分析法
shallow crossflow
buoyant jet
numerical simulation
hybrid finite analytic method
