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Development of a Computational Fluid Dynamics Model for Predicting Fouling Process Using Dynamic Mesh Model

机译：使用动态网格模型预测结垢过程的计算流体动力学模型的开发

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This article presents a comprehensive computational model capable of simulating fouling layer thickness evolution using dynamic mesh model. This computational methodology has been developed to reproduce the deposit generation during fouling process with an innovated work method. Dynamic mesh model, from Ansys Fluent software, and external routines have been used to implement this advanced numerical model which allows to move the boundaries of a region relative to other boundaries of the zone. The displacement of the nodes of the mesh is the mechanism that this model uses to adjust the geometry according to the fouling layer evolution. During the simulation process, the geometry under investigation is modified to reproduce the emergence and gradual change of the fouling layer. Different rules of deposition and removal of the fouling process can be implemented in the proposed algorithm. The direct interaction between fouling expressions and governing equations of the main flow is used to predict deposits formation and growth. In this article, numerical simulations of soot fouling layer formation have been presented. Deposit evolution has been calculated inside different heat exchanger technologies used in exhaust gas recirculation systems to analyze fouling process and to verify the advantages of this new computational strategy.
机译：本文提出了一种综合的计算模型，该模型能够使用动态网格模型来模拟结垢层厚度的演变。已经开发出这种计算方法，以利用创新的工作方法在结垢过程中重现沉积物。来自Ansys Fluent软件的动态网格模型和外部例程已用于实现此高级数值模型，该模型允许相对于区域的其他边界移动区域的边界。网格节点的位移是该模型根据结垢层演变来调整几何形状的机制。在模拟过程中，修改所研究的几何形状以重现结垢层的出现和逐渐变化。可以在提出的算法中实现结垢过程的不同沉积和去除规则。结垢表达式和主流控制方程之间的直接相互作用被用来预测沉积物的形成和增长。在本文中，提出了碳黑结垢层形成的数值模拟。已经在废气再循环系统中使用的不同热交换器技术内部计算了沉积物的演变，以分析结垢过程并验证这种新的计算策略的优势。

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