3D Computation of Hydrogen-Fueled Combustion around Turbine Blade-Effect of Arrangement of Injector Holes

最近，从石块燃料燃烧引起的很多个环境问题上被集中了。与石块精力资源的最终的弄空，另外，氢气体被期望在不久的将来是一个其他的精力资源。它被高精力每统一重量描绘，高反应率，宽范围易燃并且低排放性质。在另一方面，许多研究在几个国家是在进行之中的为一架先进飞机改进一个推进系统。系统被要求比存在的有更高的力量，更轻的重量和更低的排出物。在如此的一个未来推进系统，氢气体将是为认识到要求的有希望的燃料之一。就这些背景而言，我们的组为造成氢的飞机推进系统建议了一个新周期概念。在现在的学习，我们在汽轮机片附近与造成氢的燃烧执行狂暴的流动领域的 3 维的计算。主要目的是澄清氢注射者洞的安排的影响。改变洞，流动的 3 维的性质和热领域的 chordwise 和 spanwise 间距数字地被学习。

Recently, a number of environmental problems caused from fossil fuel combustion have been focused on. In addition, with the eventual depletion of fossil energy resources, hydrogen gas is expected to be an alternative energy resource in the near future. It is characterized by high energy per unit weight, high reaction rate, wide range of flammability and the low emission property. On the other hand, many researches have been underway in several countries to improve a propulsion system for an advanced aircraft. The system is required to have higher power, lighter weight and lower emissions than existing ones. In such a future propulsion system, hydrogen gas would be one of the promising fuels for realizing the requirements. Considering these backgrounds, our group has proposed a new cycle concept for hydrogen-fueled aircraft propulsion system. In the present study, we perform 3 dimensional computations of turbulent flow fields with hydrogen-fueled combustion around a turbine blade. The main objective is to clarify the influence of arrangement of hydrogen injector holes. Changing the chordwise and spanwise spacings of the holes, the 3 dimensional nature of the flow and thermal fields is numerically studied.