Naoto Miyama 1Kazuaki Inaba 2Makoto Yamamoto1
作者信息
- 1. Department of Mechanical Engineering, Tokyo University of Science
- 2. Graduate Aeronautical Laboratories, California Institute of Technology
- 折叠
摘要
Abstract
In these years, a lot of environmental problems such as air pollution and exhaustion of fossil fuels have been discussed intensively. In our laboratory, a hydrogen-fueled propulsion system has been researched as an alternative to conventional systems. A hydrogen-fueled propulsion system is expected to have higher power, lighter weight and lower emissions. However, for the practical use, there exist many problems that must be overcome. Considering these backgrounds, jet engines with hydrogen-fueled combustion within a turbine blade passage have been studied. Although some studies have been made on injecting and burning hydrogen fuel from a stator surface, little is known about the interaction between a tip leakage vortex near the suction side of a rotor tip and hydrogen-fueled combustion.The purpose of this study is to clarify the influence of the tip leakage vortex on the characteristics of the 3-dimensional flow field with hydrogen-fueled combustion within a turbine blade passage. Reynolds-averaged compressible Navier-Stokes equations are solved with incorporating a k-ε turbulence and a reduced chemical mechanism models. Using the computational results, the 3-dimensional turbulent flow field with chemical reactions is numerically visualized, and the three-dimensional turbulent flow fields with hydrogen combustion and the structure of the tip leakage vortex are investigated.关键词
numerical simulation, CFD, gas turbine, hydrogen combustion, tip leakage vortexKey words
numerical simulation, CFD, gas turbine, hydrogen combustion, tip leakage vortex分类
数理科学
