Aerodynamic Performance Analysis on Blade Snubber with Bionic Structure  

作　　者：LIU Yunfeng YAN Han DU Wei ZHANG Hongtao LI Yufeng WEN Fengbo ZHOU Xun 

机构地区：[1]School of Energy Science and Engineering,Harbin Institute of Technology,Harbin,150041,China [2]Harbin Turbine Company Limited,Harbin,150046,China

出　　处：《Journal of Thermal Science》2025年第2期579-589,共11页热科学学报(英文版)

摘　　要：The utilization of a part-span connector(PSC)has the potential to enhance the blade frequency,but with the penalty of aerodynamic performance.In this study,we numerically investigate the aerodynamic performance of two types of bionic structure snubbers:(1)Harbor seal whisker(HSW)and(2)Atropus's body shape(ABS).The investigation is conducted by solving the three-dimensional Reynolds-Averaged Navier-Stokes(RANS)equations and utilizing the SST turbulent model.In this study,the performance impact of classical snubbers on a cascade blade has been examined by modeling it with and without an ellipse-shaped snubber.The vortex induced by the snubber predominantly manifests on the suction side and can be categorized into three primary vortices:upper,lower,and tail.The upper and lower vortices serve as the primary contributors to loss.Compared to the conventional ellipse snubber,the ABS snubber exhibits a reduction in the total pressure loss coefficient by 0.11%and an increase in the mass flow rate by 0.41%.On the contrary,the implementation of the HSW snubber has the potential to mitigate parameter fluctuations.However,it is important to note that this comes at the cost of a 0.10%increase in the total pressure loss coefficient and a 0.20%decrease in mass flow rate.This article further examines the factors contributing to these disparities.

关 键 词：bionic structure turbine blade snubber aerodynamic performance 

分 类 号：TK261[动力工程及工程热物理—动力机械及工程]