Abstract A Hybrid Chemistry (HyChem) approach has been recently developed for the modeling of real fuels; it incorporates a basic understanding about the combustion chemistry of multicomponent liquid fuels that overcomes some of the limitations of the conventional surrogate fuel approach. The present work extends this approach to modeling the combustion behaviors of a two-component bio-derived jet fuel (Gevo, designated as C1) and its blending with a conventional, petroleum-derived jet fuel (Jet A, designated as A2). The stringent tests and agreement between the HyChem models and experimental measurements for the combustion chemistry, including ignition delay and laminar flame speed, of C1 highlight the validity as well as potential wider applications of the HyChem concept in studying combustion chemistry of complex liquid hydrocarbon fuels. Another aspect of the present study aims at answering a central question of whether the HyChem models for neat fuels can be simply combined to model the combustion behaviors of fuel blends. The pyrolysis and oxidation of several blends of A2 and C1 were investigated. Flow reactor experiments were carried out at pressure of 1 atm, temperature of 1030 K, with equivalence ratios of 1.0 and 2.0. Shock tube measurements were performed for the blended fuel pyrolysis at 1 atm from 1025 to 1325 K. Ignition delay times were also measured using a shock-tube. Good agreement between measurements and model predictions was found showing that formation of the products as well as combustion properties of the blended fuels were predicted by a simple combination of the HyChem models for the two individual fuels, thus demonstrating that the HyChem models for two jet fuels of very different compositions are “additive.”

中文翻译：

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基于物理的真实燃料燃烧化学建模方法 – IV。生物衍生喷气燃料及其与传统 Jet A 混合物的燃烧动力学 HyChem 建模

摘要 最近开发了一种混合化学 (HyChem) 方法来模拟真实燃料；它结合了对多组分液体燃料燃烧化学的基本理解，克服了传统替代燃料方法的一些局限性。目前的工作将这种方法扩展到对双组分生物衍生喷气燃料（Gevo，指定为 C1）的燃烧行为及其与传统石油衍生喷气燃料（Jet A，指定为 A2）的混合进行建模。HyChem 模型与 C1 燃烧化学实验测量（包括点火延迟和层流火焰速度）之间的严格测试和一致性突出了 HyChem 概念在研究复杂液态烃燃料的燃烧化学方面的有效性和潜在的更广泛应用。本研究的另一个方面旨在回答一个核心问题，即纯燃料的 HyChem 模型是否可以简单地组合以模拟燃料混合物的燃烧行为。研究了几种 A2 和 C1 混合物的热解和氧化。流动反应器实验在 1 个大气压的压力、1030 K 的温度下进行，当量比为 1.0 和 2.0。对混合燃料在 1 个大气压下从 1025 到 1325 K 的热解进行了激波管测量。还使用激波管测量了点火延迟时间。发现测量值和模型预测之间具有良好的一致性，表明产物的形成以及混合燃料的燃烧特性是通过两种单独燃料的 HyChem 模型的简单组合来预测的，