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NUMERICAL AND EXPERIMENTAL ANALYSIS OF THE TEMPERATURE DISTRIBUTION IN A HYDROGEN FUELLED COMBUSTOR FOR A 10 MW GAS TURBINE

机译:10 MW燃气轮机氢燃料燃烧器温度场的数值与实验分析。

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Proper cooling of the hot components and an optimal temperature distribution at the turbine inlet are fundamental targets for gas turbine combustors. In particular, the temperature distribution at the ombustor discharge is a critical issue for the durability of the turbine blades and the high performance of the engine. At present, CFD is a widely used tool to simulate the reacting flow inside gas turbine combustors. This paper presents a numerical analysis of a single can type combustor designed to be fed both with hydrogen and natural gas. The eombustor also features a steam injection system to restrain the NOx pollutants. The simulations were carried out to quantify the effect of fuel type and steam injection on the temperature field. The CFD model employs a computationally low cost approach, thus the physical domain is meshed with a coarse grid.A full-scale test campaign was performed on the eombustor: temperatures at the liner wall and the eombustor outlet were acquired at different operating conditions. These experimental data, which are discussed, were used to evaluate the capability of the present CFD model to predict temperature values for eombustor operation with different fuels and steam-fuel ratios.
机译:燃气轮机燃烧室的基本目标是对热成分进行适当的冷却并在涡轮机入口处实现最佳温度分布。特别地,对于涡轮叶片的耐用性和发动机的高性能而言,在蓄能器出口处的温度分布是关键问题。目前,CFD是一种广泛用于模拟燃气轮机燃烧器内部反应流的工具。本文介绍了一种单罐式燃烧器的数值分析,该燃烧器设计为同时供入氢气和天然气。清洗器还具有蒸汽喷射系统,以抑制NOx污染物。进行模拟以量化燃料类型和蒸汽注入对温度场的影响。 CFD模型采用计算成本低的方法,因此物理域与粗网格划分网格。 在磁吸管上进行了全面测试:在不同的操作条件下获取衬管壁和磁吸管出口处的温度。讨论的这些实验数据用于评估当前CFD模型预测带有不同燃料和蒸汽-燃料比的弹子燃烧器操作的温度值的能力。

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