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首页> 外文期刊>International Journal of Heat and Mass Transfer >Unsteady 2D conjugate natural non-Newtonian convection with non-Newtonian liquid sterilization in square cavity
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Unsteady 2D conjugate natural non-Newtonian convection with non-Newtonian liquid sterilization in square cavity

机译：二维非定常共轭自然非牛顿对流与非牛顿液体灭菌

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摘要

Unsteady 2D natural convection driven sterilization of a non-Newtonian liquid inside a square container caused by external natural convection of a non-Newtonian fluid has been studied numerically. Carboxy-methyl-cellulose was chosen as the internal non-Newtonian liquid food and external heating fluid, both treated in terms of a Power Law model. Conjugate convective fluid and heat transport, described in terms of non linear coupled continuity, momentum, and energy equations, were solved by using the finite volume method with the SIMPLE algorithm. Time evolution for velocity and temperature distributions for inner liquid food and outer fluid flow are described. The effect of assuming pseudoplastic (n = 0.6), Newtonian (n = 1.0) and dilatant (n = 1.4) fluid models on fluid dynamics, natural convection and sterilization is analyzed.
机译：数值研究了由非牛顿流体的外部自然对流导致的方形容器内非牛顿液体的非稳态二维自然对流驱动灭菌。羧甲基纤维素被选为内部非牛顿液体食品和外部加热流体，均根据幂定律模型进行了处理。用有限体积法和SIMPLE算法求解了用非线性耦合的连续性，动量和能量方程描述的共轭对流流体和热传递。描述了内部液体食物和外部液体流动的速度和温度分布的时间演化。分析了假塑性（n = 0.6），牛顿（n = 1.0）和膨胀（n = 1.4）流体模型对流体动力学，自然对流和灭菌的影响。

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