论文标题
两流体热交换的拓扑设计
Topology design of two-fluid heat exchange
论文作者
论文摘要
热交换器是通常在两种流体之间传递热量的设备。热交换器（例如传热速率和压力损失）的性能在很大程度上取决于传热系统中的流动状态。在本文中，我们为两流体热交换系统提供了一种基于密度的拓扑优化方法，该方法在固定压力损失下达到了最大的传热速率。我们通过使用单个设计变量字段提出了三个状态的表示模型，即两种流体之间的两种流体和一个实心壁。拟议模型的关键方面是，可以在没有任何惩罚方案的情况下可以防止两种流体的混合。这是因为由于使用单个设计变量字段，固体在两种流体之间不断存在。我们通过三维数值示例证明了所提出的方法的有效性，其中将优化的设计与简单的参考设计进行了比较，并研究了设计条件（即雷诺数，prandtl数字，设计域的大小和流程布置）的效果。
Heat exchangers are devices that typically transfer heat between two fluids. The performance of a heat exchanger such as heat transfer rate and pressure loss strongly depends on the flow regime in the heat transfer system. In this paper, we present a density-based topology optimization method for a two-fluid heat exchange system, which achieves a maximum heat transfer rate under fixed pressure loss. We propose a representation model accounting for three states, i.e., two fluids and a solid wall between the two fluids, by using a single design variable field. The key aspect of the proposed model is that mixing of the two fluids can be essentially prevented without any penalty scheme. This is because the solid constantly exists between the two fluids due to the use of the single design variable field. We demonstrate the effectiveness of the proposed approach through three-dimensional numerical examples in which an optimized design is compared with a simple reference design, and the effects of design conditions (i.e., Reynolds number, Prandtl number, design domain size, and flow arrangements) are investigated.
