κ-ε-κ_ρ模型的C_μ修正及三维强旋气相流场预报  

C_μMODIFICATION OF κ-ε-κ_ρ MODEL AND PREDICTIONS OF THREE DIMENSIONAL STRONGLY SWIRLING FLOW

作　　者：杨海[1] 还博文[1] 张小斐 

机构地区：[1]上海交通大学,上海200240

出　　处：《热力发电》1998年第5期4-7,共4页Thermal Power Generation

摘　　要：采用直旋流修正的气相湍流κ－ε－κ_ρ－模型，对旋风炉炉内有旋流、回流的气 相湍流流场进行了模拟和分析，给出了气相速度场的分布情况，对ｃ_μ修正与未修正 的计算结果进行了比较，表明预报结果是合理的，揭示了旋风炉炉内的气相流场具有 强旋湍流各向异性的特点。Gas Phase κ-ε-κ_ρ model with swirling modification is used to simulate gas phase turbulent flow with strongly swirling and re- verse flow in cyclone furnace. The velocity profiles of gas are given and analyzed. Compared with the results without swirling modification, the results is reasonable and reveal the nonisotropic features of turbulence in vortexing flows.

关 键 词：强旋湍流 数值模拟 湍流 旋风炉锅炉 

分 类 号：O357.5[理学—流体力学] TK229.65[理学—力学]