燃气透平叶片表面颗粒沉积特性试验研究进展

Experimental Research Progress on the Particle Deposition Characteristics of Gas Turbine Blade Surface

污染物颗粒在燃气轮机透平叶片表面的沉积将直接影响透平叶片的冷却特性,进而影响透平叶片的安全服役寿命。国外许多研究机构对燃气透平叶片表面污染物颗粒沉积特性及其与气膜冷却的相互作用机制进行了持续研究。本文首次总结了近年来燃气透平叶片表面污染物颗粒沉积特性的相关试验研究进展,重点介绍了燃气透平叶片表面污染物颗粒沉积的发生机制和当前知名研究机构的实验研究方法、测试技术和研究成果。基于当前研究热点和发展趋势,结合作者的研究经历,指出了国内在开展类似实验研究时应注意的问题和方向,为高效、燃料适应性更广的燃气轮机技术自主开发奠定基础。

Deposition of contaminant particles on the blade surface of gas turbine directly affects the cooling characteristics of turbine blade,which can reduce the safe service life of gas turbine.Many foreign research institutes have conducted continuous investigations on the characteristics of particle deposition on turbine blade surface and its interaction with film cooling.This paper summarizes the experimental research progress of particle deposition on the surface of gas turbine blades in recent years for the first time.The mechanism of particle deposition on the surface of gas turbine blades and the experimental research methods,testing techniques and research findings of the current famous research institutes are emphatically introduced.Combined with authors’ research experience,the concerned issues and directions during domestic similar experimental studies are pointed out based on the current research hotspots and development trends in this paper.The results of this paper will provide a technical basis for the independent development of gas turbine technologies with high efficiency and fuel adaptability.