Simulations of Flowing Mildly-Cracked Normal Alkanes Incorporating Proportional Product Distributions
Simulations of Flowing Mildly-Cracked Normal Alkanes Incorporating Proportional Product Distributions
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DOI：
10.2514/1.10380
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发表时间：
2004-03
影响因子：
1.9
通讯作者：
T. Ward;J. Ervin;R. Striebich;Steven Zabarnick
中科院分区：
文献类型：
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作者：
T. Ward;J. Ervin;R. Striebich;Steven Zabarnick
烃类燃料作为飞机喷气发动机的冷却介质已使用多年。然而，先进的飞机发动机正在达到实际的传热极限，超过该极限，由燃料提供的显热传递不再足够。一种解决方案是使用通过化学反应吸收热量的吸热燃料。一个二维的计算模型，计算与流动的燃料使用一个独特的全球化学动力学模型的热量和质量传输。大多数过去的模型没有考虑到流动燃料的化学成分的变化，也没有充分预测超临界状态下的流动特性。提出的二维计算模型计算的超临界反应燃料的流动特性的变化，通过使用实验得出的比例产品分布。正癸烷和正十二烷在流动反应器中进行温和裂解的实验数据验证了计算结果。相信这些模拟将有助于对高温燃料流动实验的基本理解。
Hydrocarbon fuels have been used as a cooling media in aircraft jet engines for many years. However, advanced aircraft engines are reaching a practical heat transfer limit beyond which the sensible heat transfer provided by fuels is no longer adequate. One solution is to use an endothermic fuel that absorbs heat through chemical reactions. A two-dimensional computational model is developed to calculate the heat and mass transport associated with a flowing fuel using a unique global chemical kinetics model. Most past models do not account for changes in the chemical composition of a flowing fuel and also do not adequately predict flow properties in the supercritical regime. The two-dimensional computational model presented calculates the changing flow properties of a supercritical reacting fuel by use of experimentally derived proportional product distributions. The calculations are validated by measured experimental data obtained from a flow reactor in which n-decane and n-dodecane are mildly cracked. It is believed that these simulations will assist the fundamental understanding of high-temperature fuel flow experiments.