Effect of Parameter Variation on the Viscosity of Ethanol Gel Propellants

IF 0.9 Q3 ENGINEERING, AEROSPACE
Chloé Carer, Leonhard Xaver Driever, Stein Köbben, Max Mckenzie, Fredrik Rhenman, Onno Van de Sype, J. V. D. Toorn, C. V. Wezel, Constança Miranda de Andrade Veiga, Aleksandrs Vinarskis, B. Jyoti
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引用次数: 4

Abstract

This research investigated how the variation of temperature and shear rate affects the viscosity of ethanol gel propellants that use methyl cellulose as gellant and, in parts, use boron as energetic additive. Using a rotational viscometer in a cone-and-plate configuration, propellant viscosity data was recorded across a range of temperatures and applied shear rates. The temperature dependence of the viscosity was modelled using an Arrhenius-type equation. For the high shear rates, the data was modelled using the Power Law, Herrschel–Bulkley model, Carreau model, and Cross model. For low shear rates the used model was the rearranged Herrschel–Bulkley model. The temperature investigation suggested that the trend of decreasing viscosity with increasing temperature, predicted by the Arrhenius-type equation, is only applicable until approximately 320 K, after which the gel viscosity increased strongly. At high shear rates, the gel behaved in a shear thinning manner and was modelled most accurately by the Cross model. At low shear rates, the gel was shear thickening up to its elastic limit, which was found to lie at 0.41 s–1.
参数变化对乙醇凝胶推进剂粘度的影响
本研究考察了温度和剪切速率的变化对乙醇凝胶推进剂粘度的影响,该推进剂以甲基纤维素为胶凝剂,部分以硼为含能添加剂。使用锥形和平板结构的旋转粘度计,记录了推进剂在一系列温度和施加剪切速率下的粘度数据。粘度对温度的依赖关系采用arrhenius型方程进行建模。对于高剪切速率,使用幂定律、Herrschel-Bulkley模型、Carreau模型和Cross模型对数据进行建模。对于低剪切速率,使用的模型是重新排列的Herrschel-Bulkley模型。温度研究表明,arrhenius型方程预测的黏度随温度升高而降低的趋势只适用于大约320 K,之后凝胶黏度急剧增加。在高剪切速率下,凝胶表现为剪切变薄,用Cross模型最准确地模拟了这一点。在低剪切速率下,凝胶的剪切增厚达到其弹性极限,即0.41 s-1。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
2.00
自引率
0.00%
发文量
16
审稿时长
20 weeks
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