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Volumetric PIV measurement for capturing the port flow characteristics within annular gas turbine combustors
Experiments in Fluids ( IF 2.4 ) Pub Date : 2020-03-25 , DOI: 10.1007/s00348-020-2938-4
Mark A. Brend , Paul A. Denman , Jon F. Carrotte

Abstract The three-dimensional flows within a full featured, unmodified annular gas turbine combustor have been investigated using a scanned stereoscopic PIV measurement technique. Volumetric measurements have been achieved by rigidly translating a stereoscopic PIV system to scan measurements around the combustor, permitting reconstruction of volumetric single-point statistics. Delivering the measurements in this way allows the measurement of larger volumes than are accessible using techniques relying upon high depth of field imaging. The shallow depth of field achieved in the stereoscopic configuration furthermore permits measurements in close proximity to highly detailed geometry. The measurements performed have then been used to assess the performance of the combustor port flows, which are central to the emissions performance and temperature/velocity profile at turbine inlet. Substantially differing performance was observed in the primary ports with circumferential position, which was found to influence the behaviour of the second secondary port jets. The measurements indicated that the interaction between the primary and secondary jets occurred due to variations in the external boundary conditions imposed by the annular passages in which the combustor is located. Graphic abstract

中文翻译:

用于捕获环形燃气轮机燃烧器内端口流动特性的体积 PIV 测量

摘要 使用扫描立体 PIV 测量技术研究了全功能、未修改的环形燃气轮机燃烧器内的三维流动。体积测量是通过严格地平移立体 PIV 系统来扫描燃烧器周围的测量值来实现的,允许重建体积单点统计数据。以这种方式进行测量允许测量比使用依赖于高景深成像的技术所能达到的更大的体积。此外,立体配置中实现的浅景深允许在非常详细的几何形状附近进行测量。然后使用执行的测量来评估燃烧器端口流量的性能,这对于涡轮机入口处的排放性能和温度/速度曲线至关重要。在具有圆周位置的主要端口中观察到明显不同的性能,发现这会影响第二次要端口射流的行为。测量结果表明,由于燃烧室所在的环形通道施加的外部边界条件的变化,发生了一次和二次射流之间的相互作用。图形摘要 测量结果表明,由于燃烧室所在的环形通道施加的外部边界条件的变化,发生了一次和二次射流之间的相互作用。图形摘要 测量结果表明,由于燃烧室所在的环形通道施加的外部边界条件的变化,发生了一次和二次射流之间的相互作用。图形摘要
更新日期:2020-03-25
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