Investigation of Secondary Structures for Pillow Plate Heat Exchangers

计划研究项目的目的是开发一种方法和生产技术，用于设计和制造枕板式换热器的优化二级结构。这些应该具有显著改善的应用特性。因此，计划中的研究有两个重点工作领域。第一个是研究和开发特定应用的优化结构，这应该在结构易于生产的背景下进行。为此，将开发一种基于CFD模型的热工水力多尺度建模方法，该方法可用于可靠地确定特定应用情况下的优化枕板二级结构。第二个重点领域与第一个密切相关，包括开发一种制造技术，该技术适用于将优化的二次结构化引入金属板半成品。特别地，在可靠的过程中，应该可以生产具有小半径的非常精细的轮廓，同时具有高的表面质量以及形状和尺寸精度。这应该具有成本效益，特别是对于小批量生产的组件。增量应用电液成形是一种很有前途的方法。为了进一步开发适用于枕板式换热器的大面积金属板半成品的加工方法，将在这些工具（工具系统）和过程控制或过程控制策略的基础上创建和阐述适当的FEM模型。

The aim of the of the planned research project is to develop a methodology and also production technologies for the design and manufacture of optimized secondary structures for pillow plate heat exchangers. These should have significantly improved application properties. Two focal areas of work thus result for the planned research. The first of these is the research and development of application-specific optimized structuring, which should be carried out against the background of easy producibility of the structures. A method is to be developed to this end for thermohydraulic multi-scale modelling on the basis of CFD models which can be used for the reliable determination of optimised pillow plate secondary structures for specified application cases. The second focal area, which is closely interlinked with the first one, consists in developing a manufacturing technology that is suitable for introducing optimised secondary structuring into sheet metal semi-finished products. It should be possible in particular to produce very fine contours having small radii, with a simultaneously high surface quality and also shape and dimensional accuracy, in a reliable process. This should be cost-efficient especially for components produced in small quantities. Incrementally-applied electrohydraulic forming is a promising approach here. In order to further develop this method for the processing of larger-area sheet metal semi-finished products suitable for pillow plate heat exchangers, appropriate FEM models are to be created and elaborated on the basis of these tools (tool systems) and process control or process control strategies.