摘要
为了对自然界中普遍存在的湍流运动的机理和规律进行研究 ,使之在工程实践中得到应用 ,工程湍流模式是非常实用而且有效的方法 ,本文总结了倪浩清提出的几种工程湍流模式 ,以及这些模式在冷却水工程、环境工程和海洋工程研究领域的应用 .在此基础上 ,给出了一个全新的深度平均代数应力模型 ,经实际模拟计算 ,新模型所预报的污染物扩散、稀释和自净范围 ,比各向同性深度平均的k
A review on the application of turbulence model for engineering practice developed by the authors is presented.On this basis,a new depth averaged algebraic stress turbulence for entire flow field is proposed.In this model the divergent effects due to the vertical distributions of velocity and temperature are taken into account.The properties of non isotropic turbulence are also being considered.Thus,the mixing,diffusion and transportation of thermal water or pollution in the process of discharging into a large water body can be simulated more precisely.The numerical calculation of the thermal effluent of Douhe Thermal Power station shows that the result is better than that of depth averaged k ε models.
出处
《水利学报》
EI
CSCD
北大核心
2001年第5期22-31,共10页
Journal of Hydraulic Engineering
关键词
工程湍流模式
代数应力模型
数值模拟
turbulence model
engineering
algebraic stress model
numerical simulation
