Design and numerical assessment of an additively manufactured Schwarz diamond triply periodic minimal surface fluid-fluid heat exchanger

IF 1.7 4区 工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY
Tim Röver, Maxim Kuehne, Floyd Bischop, Leighton Clague, Bastian Bossen, Claus Emmelmann
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引用次数: 0

Abstract

In aerospace, thermal applications demand compact, lightweight, and efficient heat exchangers. Additive manufacturing processes offer the potential to create highly complex structures that are not achievable through traditional manufacturing methods. This work presents the development of an additively manufactured fluid-fluid heat exchanger that shows the potential to enhance the performance, reduce weight, and increase compactness compared to a conventional plate heat exchanger. A numerical model of the conventional plate heat exchanger was created, and fluid dynamics simulations with heat transfer were performed. Validation of the simulations was done by experiments. Then, a novel heat exchanger was designed using a bottom-up approach and investigated at different levels of complexity using computational fluid dynamics. The internal structure of the final heat exchanger consists of a repeating triply periodic Schwarz diamond minimum surface elongated in the direction of flow. The heat exchanger was manufactured with laser powder bed fusion process using AlSi10Mg. It had a 108% higher compactness and 54% lower weight compared to the plate heat exchanger. Numerical analysis yielded the pressure loss in pascal was reduced by 50%–59% while heat transfer in watts was improved by 3%–5%. Future researches should experimentally investigate the thermal and fluid mechanical characteristics of the novel additively manufactured heat exchanger and increase compactness and heat transfer further by analyzing the minimum partition wall thickness and the impact of wall roughness and deposit formation.
添加式制造的施瓦茨金刚石三周期最小表面流体-流体热交换器的设计与数值评估
在航空航天领域,热应用要求热交换器结构紧凑、重量轻、效率高。快速成型制造工艺提供了制造传统制造方法无法实现的高度复杂结构的潜力。与传统板式热交换器相比,该热交换器具有提高性能、减轻重量和提高紧凑性的潜力。研究人员创建了传统板式热交换器的数值模型,并进行了传热流体动力学模拟。实验验证了模拟结果。然后,采用自下而上的方法设计了一种新型热交换器,并利用计算流体动力学对不同复杂程度的热交换器进行了研究。最终热交换器的内部结构由沿流动方向拉长的重复三周期施瓦茨金刚石最小表面组成。热交换器采用 AlSi10Mg 激光粉末床熔融工艺制造。与板式热交换器相比,它的紧凑性提高了 108%,重量减轻了 54%。数值分析结果表明,以帕斯卡为单位的压力损失降低了 50%-59%,而以瓦特为单位的热传递提高了 3%-5%。未来的研究应通过实验研究新型加成制造热交换器的热和流体机械特性,并通过分析最小隔板壁厚以及壁面粗糙度和沉积物形成的影响,进一步提高紧凑性和传热性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
3.60
自引率
9.50%
发文量
125
审稿时长
>12 weeks
期刊介绍: The Journal of Laser Applications (JLA) is the scientific platform of the Laser Institute of America (LIA) and is published in cooperation with AIP Publishing. The high-quality articles cover a broad range from fundamental and applied research and development to industrial applications. Therefore, JLA is a reflection of the state-of-R&D in photonic production, sensing and measurement as well as Laser safety. The following international and well known first-class scientists serve as allocated Editors in 9 new categories: High Precision Materials Processing with Ultrafast Lasers Laser Additive Manufacturing High Power Materials Processing with High Brightness Lasers Emerging Applications of Laser Technologies in High-performance/Multi-function Materials and Structures Surface Modification Lasers in Nanomanufacturing / Nanophotonics & Thin Film Technology Spectroscopy / Imaging / Diagnostics / Measurements Laser Systems and Markets Medical Applications & Safety Thermal Transportation Nanomaterials and Nanoprocessing Laser applications in Microelectronics.
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