重型燃机中旋转盘流动与换热的数值研究  

Numerical Study on Flow and Heat Transfer in a Rotating Disk System of Heavy-duty Gas Turbine

作　　者：梁培培[1] 冯永志[1] 张宏涛[1] 张成义[1] 吕智强[1] 李长宝[2] 

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046 [2]哈电集团重型装备有限公司,秦皇岛066000

出　　处：《汽轮机技术》2013年第6期431-433,共3页Turbine Technology

基　　金：国家863计划重型燃气轮机重大项目资助(项目编号:2008AA05A302)

摘　　要：以某重型燃气轮机中的中心进气引气腔为研究对象,针对影响其流动及换热的因素:旋转雷诺数、流量系数,采用混合长度模型及流固共轭计算的方法对引气腔的流动与换热进行了数值计算。数值计算结果表明:引气腔盘面的温度随旋转雷诺数、流量系数的变化情况与理论分析相符,数值计算得到的平均努塞尔数与理论计算的数值相差很小,选择混合长度模型进行引气腔的流动与换热计算是可行的,数值计算能够比较准确的模拟引气腔的流动与换热。According to the effect of rotational Reynolds number, flow coefficients on the flow and heat transfer, the mixing length model and conjugation calculation were applied to the numerical simulation for the fluid flow and heat transfer process in a rotating shrouded disk with central coolant inlet in the heavy-duty gas turbine. Numerical simulation results show that the change of temperature of the rotating disk walls with the rotational Reynolds number,flow coefficients corresponded to the theoretical analysis, the error of the averaged Nusselt number between the simulation and the theoretical calculation is very small. It is feasible to choose the mixing length model for the fluid flow and heat transfer process in a rotating shrouded disk. rotating disk; heat transfer; numerical calculation; Nusselt number

关 键 词：旋转盘 换热 数值计算 努塞尔数 

分 类 号：TK262[动力工程及工程热物理—动力机械及工程]