Rotation Effect on Flow and Heat Transfer for High-Temperature Rotor Blade in a Heavy Gas Turbine  

作　　者：DONG Aihua YAN Peigang QIAN Xiaoru HAN Wanjin WANG Qingchao 

机构地区：[1]School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China [2]Harbin Turbine Company Limited,Harbin 150046,China

出　　处：《Journal of Thermal Science》2021年第2期707-715,共9页热科学学报（英文版）

基　　金：This research work was funded by the Foundation for Innovative Research Groups of National Nature Science Foundation of China(Grant No.51121004).

摘　　要：In this paper,the composite inner cooling structures of the rotating blade in the first stage heavy gas turbine were modeled and simulated by coupling heat transfer (CHT).The flow characteristics and heat transfer performances were comparatively analyzed under two operations of the stationary and the rotational states.The results show that the turbulence intensity,the flow resistance and the heat transfer level of the rotating coolant are significantly increased compared with the stationary state,which is considered to be obtained by the combined effects of the Coriolis force,the centrifugal force and their derived buoyancy forces.It is pointed out that the rotation leads to the non-uniform flow of film holes at the leading edge of the pressure surface along blade height.In addition,it increases the slope of the limiting streamline,which has a decisive influence on the heat transfer of both the pressure and suction surfaces.The paper provides guidance for the design of a rotating composite cooling structure based on the relations between the stationary and rotational conditions.

关 键 词：heavy gas turbine composite cooling structure coupled heat transfer rotation effect SIMULATION 

分 类 号：TK471[动力工程及工程热物理—动力机械及工程]