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首页> 外文期刊>International Journal of Exergy >Graphical exergy analysis for a scramjet thermodynamic performance evaluation
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Graphical exergy analysis for a scramjet thermodynamic performance evaluation

机译：图形火用分析用于超燃冲压发动机热力学性能评估

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Graphical exergy analysis was applied to a scramjet at cruise conditions. A zero-dimensional scramjet model was developed to describe the thermodynamic process of a hypersonic propulsion system. Energy utilisation diagrams (EUDs) were drawn to present the relationship between energy and energy level at cruise conditions. Performance optimisation based on the exergy efficiency was completed ranging from Ma 5.35 to Ma 6.23. The results indicate that the exhausting process produces the most exergy destruction, then the combustion process, and the exergy loss in the expansion process is the smallest. There is a maximal exergy efficiency with the variation of fuel equivalence ratio for a certain entrance condition, and the maximum increases with the cruise Mach number and the altitude. The advantages of graphical exergy analysis, such as visual representation of the relationships among different components and the convenience of analysis, were also shown by the example in this paper.
机译：图形火用分析在巡航条件下应用于超燃冲压发动机。开发了零维超燃冲压发动机模型来描述高超音速推进系统的热力学过程。绘制了能量利用图（EUD），以显示巡航条件下能量与能量水平之间的关系。完成了基于火用效率的性能优化，范围从Ma 5.35到Ma 6.23。结果表明，排气过程产生的最大的火用破坏，其次是燃烧过程，膨胀过程的火用损失最小。在一定的进入条件下，最大当量效率随燃料当量比的变化而变化，并且最大随巡航马赫数和高度的增加而增加。本文的示例还显示了图形火用分析的优势，例如直观表示不同组件之间的关系以及分析的便利性。

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