While undesirable in aviation fuel systems, water is both ubiquitous and tenacious; thus, interactions between water and aviation turbine fuel occur regularly. From a fuel user perspective, it is important to know, understand, and be able to predict such fuel–water interactions, e.g., water solubility, water settling rate, and interfacial tension, for proper mitigation. We explore these interactions as well as surface tension of both petroleum-derived and alternative jet fuels to compare potential differences between product compositions on these physical interactions. Observations indicate a positive, nonlinear correlation between water solubility and both aromatic content and temperature (from 0 to 50 °C). Water settling rates appear to follow a Stokes’ law model; therefore, bulk chemical composition indirectly influences settling rates via density and viscosity. Finally, surface tension appears positively correlated to sample density, while interfacial tension is correlated to both surface tension and fuel aromatic content.

中文翻译：

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水与石油衍生的和合成的航空涡轮燃料相互作用的研究

尽管在航空燃油系统中是不可取的，但是水却无处不在且坚韧不拔。因此，水与航空涡轮机燃料之间的相互作用会定期发生。从燃料使用者的角度来看，重要的是要了解，理解并能够预测这种燃料与水的相互作用，例如水溶性，水沉降速率和界面张力，以便适当缓解。我们探索了这些相互作用以及石油衍生燃料和替代喷气燃料的表面张力，以比较这些物理相互作用下产品成分之间的潜在差异。观察结果表明，水溶性与芳烃含量和温度（0至50°C）之间呈正非线性关系。水的沉降率似乎遵循斯托克斯定律。所以，大块化学成分通过密度和粘度间接影响沉降速率。最后，表面张力似乎与样品密度成正相关，而界面张力既与表面张力又与燃料芳烃含量相关。