Study on Rotational Effects of Modern Turbine Blade on Coolant Injecting Nozzle Position with Film Cooling and Vortex Composite Performance

作     者：Jiefeng Wang Eddie Yin Kwee Ng Jianwu Li Yanhao Cao Yanan Huang Liang Li 

作者机构：School of Energy and Power EngineeringXi’an Jiaotong UniversityXi’an710049China School of Mechanical and Aerospace EngineeringCollege of EngineeringNanyang Technological University639798Singapore Shaanxi Engineering Laboratory of Turbomachinery and Power EquipmentXi’an710049China 

出 版 物：《Frontiers in Heat and Mass Transfer》 (热量和质量传递前沿（英文）)

年 卷 期：2023年第21卷第1期

页      面：1-31页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Science and Technology Major Project under Grant (2017-I-0009-0010) 

主　　题：Vortex cooling injecting nozzle location gas turbine blade film cooling 

摘      要：The flow structure of the vortex cooling is asymmetrical compared to the traditional gas turbine leading edge cooling,such as the impingement cooling and the axial flow *** asymmetrical property will affect the cooling performance in the blade leading edge,whereas such effects are not found in most of the studies on vortex cooling due to the neglect of the mainstream flow in the airfoil *** study involves the mainstream flow field and the rotational effects based on the profile of the GE E3 blade to reveal the mechanism of the asymmetrical flow structure *** nozzle position on the characteristics of the vortex and film composite cooling in the turbine rotating blade leading edge is numerically *** cool-ant injecting nozzles are set at the side of the pressure surface(PS-side-in)*** is set at the side of the suction surface(SS-side-in)to compare the cooling characteristics at the rotating speed range of 0–4000 rpm with fluid and thermal conjugate *** show that the nozzle position presents different influences under low and higher rotational *** for the mainstream flow,rotation makes the stagnation line move from the pressure surface side to the suction surface side,which changes the coolant film attachment on the blade leading edge *** position of nozzles,however,indicates limited influence on the coolant film *** for the internal channel vortex flow characteristics,the coolant injected from the nozzles forms a high-velocity region near the target wall,which brings about enhancing convective heat *** flow direction of the vortex flow near the internal channel wall is opposite and aligns with the direction of Coriolis force in both the PS-side-in and SS-side-in,***,the Coriolis force augments the convective heat transfer intensity of the vortex cooling in the internal channel in SS-side-in while weakening the internal heat transfer in *** effects become mo