发表机构
Institute of Aircraft Propulsion Systems, University of Stuttgart（斯图加特大学航空推进系统研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对现有涡轮机械性能图在压比一致性和飞机级建模上的局限，提出火用-火无图，以无量纲参数统一描述压缩机和涡轮，支持压比1，可无损转换且能清晰区分运行工况。
AI 中文摘要
飞机发动机的性能综合计算依赖于表格化数据集，以便在可接受的运行时间内模拟复杂的涡轮机械部件。通常，这些所谓的性能图以总压比和过程的等熵效率来表示流体通过部件时能量状态的变化。然而，这两个参数的定义对于压缩机和涡轮是不同的，并且等熵效率在压比为1时均未定义。此外，当在现代高度集成的飞机设计所需的飞机层面建模发动机时，这种参数组合不能直接应用。由于火用分析是飞机设计评估的成熟工具，因此提出了新的性能图，用于描述给定涡轮机械部件上火用和火无的变化。这两种变化均以无量纲参数表示，其定义对压缩机和涡轮一致，并且兼容压比为1的情况。研究表明，所提出的火用-火无图可在标准涡轮机械试验台上获得，或通过转换现有图得到。通过示例强调，现有图与火用-火无图之间的转换是完全无损的。涡轮机械的不同运行工况在新图表示中清晰可辨，从而可以评估图的物理一致性。因此，结论是火用-火无图是当今已建立的性能图变体的重要替代方案。
英文摘要
The performance synthesis calculation of aircraft engines relies on tabulated datasets for the simulation of the complex turbomachinery components at acceptable runtimes. Typically, these so-called performance maps express the change of the fluid's energetic state over the component in terms of the total pressure ratio and the isentropic efficiency of the process. However, the definitions of both parameters are different for compressors and turbines and the isentropic efficiency is in both cases not defined for a unity pressure ratio. Moreover, this parameter combination is not directly applicable when modelling the engine at the aircraft level, which is required for modern highly integrated aircraft design. As exergy analysis is an established tool for aircraft design asessment, novel performance maps are proposed that describe the change in exergy and anergy over a given turbomachine component. Both changes are expressed as non-dimensional parameters whose definition is consistent for compressors and turbines, and is compatible with a unity pressure ratio. It is shown that the presented exergy-anergy maps are obtainable on a standard turbomachine test bed or through transformation of existing maps. It is highlighted using examples, that the conversion between existing maps and exergy-anergy maps is completely lossless. The different operating regimes of the turbomachines are clearly distinguishable in the novel map representation, which allows an assessment of the map's physical consistency. It is therefore concluded, that the exergy-anergy maps are an important alternative to the performance map variants established today.
Comments10 pages, 7 figures, 2 tables, submitted to the ASME Journal of Turbomachinery
