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Thixotropy of sweetened condensed milk applied to flow fluid dynamics analysis of cylindrical pipes
Journal of Food Process Engineering ( IF 2.7 ) Pub Date : 2020-03-17 , DOI: 10.1111/jfpe.13397 Bianca Guimarães 1 , Maria J. N. Martins 1 , Rodrigo D. Flauzino 1 , Rodrigo C. Basso 2 , Javier Telis Romero 1
Journal of Food Process Engineering ( IF 2.7 ) Pub Date : 2020-03-17 , DOI: 10.1111/jfpe.13397 Bianca Guimarães 1 , Maria J. N. Martins 1 , Rodrigo D. Flauzino 1 , Rodrigo C. Basso 2 , Javier Telis Romero 1
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Understanding the rheological behavior of fluids and the parameters related to flow fluid dynamics is important for better designing equipment and enhancing processes in the food industry. Thus, the objective of this study was to characterize the rheological behavior of sweetened condensed milk (SCM) in the temperature range of 278.15 to 343.15 K, investigate the friction factor in laminar flow for this fluid, and evaluate the correlation between the rheological behavior obtained from fluid dynamics data and that obtained from rheological assays. The rheological properties of the SCM were determined in triplicate using an AR 2000 controlled tension rotational rheometer with a parallel‐plate and cone‐and‐plate geometry and the pressure drop measurement system consisting of stainless steel pipes connected to a 0.1 m3 stainless steel cylindrical tank. Pseudoplastic behavior with thixotropy was observed, and the friction factor in laminar flow diverged from the theoretical value, with a maximum relative deviation of 42.4% for the data in the descending curve. The maximum relative deviation between the calculated pressure drop and the experimental values was 36.8%. A satisfactory correlation was obtained between the SCM rheological behaviors obtained using rheometer data and pressure drop assays.
中文翻译：
甜炼乳的触变性在圆柱管流动流体动力学分析中的应用
了解流体的流变行为以及与流动流体动力学相关的参数对于更好地设计设备和增强食品行业的流程非常重要。因此，本研究的目的是表征甜炼乳（SCM）在278.15至343.15 K的温度范围内的流变行为，研究该流体在层流中的摩擦因子，并评估所得流变行为之间的相关性。从流体动力学数据和流变分析获得的数据。使用具有平行板和锥板几何形状的AR 2000控制的张力旋转流变仪以及由连接至0.1 m 3的不锈钢管组成的压降测量系统，一式三份地确定了SCM的流变性。不锈钢圆柱罐。观察到具有触变性的假塑性行为，层流中的摩擦因数与理论值相背离，下降曲线中的数据的最大相对偏差为42.4％。计算的压降与实验值之间的最大相对偏差为36.8％。使用流变仪数据和压降试验获得的SCM流变行为之间获得了令人满意的相关性。
更新日期：2020-03-17
中文翻译：
甜炼乳的触变性在圆柱管流动流体动力学分析中的应用
了解流体的流变行为以及与流动流体动力学相关的参数对于更好地设计设备和增强食品行业的流程非常重要。因此，本研究的目的是表征甜炼乳（SCM）在278.15至343.15 K的温度范围内的流变行为，研究该流体在层流中的摩擦因子，并评估所得流变行为之间的相关性。从流体动力学数据和流变分析获得的数据。使用具有平行板和锥板几何形状的AR 2000控制的张力旋转流变仪以及由连接至0.1 m 3的不锈钢管组成的压降测量系统，一式三份地确定了SCM的流变性。不锈钢圆柱罐。观察到具有触变性的假塑性行为，层流中的摩擦因数与理论值相背离，下降曲线中的数据的最大相对偏差为42.4％。计算的压降与实验值之间的最大相对偏差为36.8％。使用流变仪数据和压降试验获得的SCM流变行为之间获得了令人满意的相关性。
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