SGER-Exploratory Research with Constructal Theory: Vascular Designs

SGER-结构理论探索性研究：血管设计

• 批准号: 0831229
• 负责人: Adrian Bejan
• 金额: --
• 依托单位: Duke University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-07-15 至 2009-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0831229&HistoricalAwards=false
• 关键词: SGER; Exploratory; Research; Constructal; Theory

Proposal Title: SGER-Exploratory Research with Constructal Theory: Vascular DesignsPrincipal Investigator: Bejan, AdrianInstitution: Duke UniversityProposal No: CBET-0831229AbstractNature teaches us that in animal design the arterial blood stream invades and bathes an entire volume (organ, muscle, tissue) as a three-dimensional tree-shaped flow architecture. The arterial and venous blood stream is reconstituted from the same volume as a tree-shaped flow architecture. The arterial and venous blood trees are matched canopy to canopy (the ?canopy? vascularizes the volume). This project shows why and when trees matched canopy to canopy are the most efficient way of bathing (servicing, keeping alive) a three-dimensional volume. The focus is on fundamental design principles, or design as science. This project aims to discover the strategy for assembling, optimizing and constructing complex flow structures, in the time direction of increasing fineness and complexity. This forms the basis for the design of vascularized materials with leaf-like structure and volumetric functionality. The application on which the new method is tried is the volumetric cooling or heating of a three-dimensional body, with applications to the cooling of electronics and the packaging of fuel cells. The winning architectures will be such that they create the best tapestry of peaks and valleys of temperature, with the highest peaks (the hot spots shaved to the lowest possible level). This integrative approach to determining the best configurations for volumetric flow systems promises to unlock the design problem of scaling up (using a small model to predict behavior at large scales), and to shed light on natural phenomena of self-organization and animal organ design. The intellectual merit of this project is that the entire panoply of vascularized designs is based on physics principles that have universal applicability, at all scales. The theoretical view is that all these design phenomena involve global ?flow? architectures that are ?alive? with flows. Sustainable designs are those in which imperfections (flow resistances, costs, danger, choke points) are balanced and distributed optimally throughout the flow territory. This integrative approach leads strategically to maximum global performance, and to the discovery of the flow architecture. With regard to broader impacts, the concept of vascularized flow systems and the principle-based approach to the discovery of global design is applicable at all scales, from nano and microscales (electronics, fuel cells), to human size (body suits, bodies of vehicles). This fundamental approach is applicable across the board, from engineering to biology and geophysics. While it is true that even without such a theoretical paradigm humans react correctly to flow imperfections in the field, typically they react by trial and error, on a piece-meal basis. They react without understanding the larger system and how it is connected to the local issue. This project teaches how to be proactive, with designs (mental viewings) that come from principle, and which benefit from the strong backing provided by all the flow designs of nature, animate and inanimate.

提案标题：SGER-结构理论探索性研究：血管设计主要研究者：Bejan，Adrian机构： 杜克大学提案编号： CBET-0831229摘要自然告诉我们，在动物设计中，动脉血流侵入并沐浴整个体积（器官，肌肉，组织）作为三维树形流动结构。 动脉和静脉血流从相同的体积重构为树形流动结构。动脉和静脉血液树是匹配的树冠到树冠（？遮篷？使体积血管化）。这个项目展示了为什么以及何时树木与树冠匹配是沐浴（服务，保持活力）三维体积的最有效方式。重点是基本的设计原则，或设计作为科学。该项目旨在发现组装，优化和构建复杂流结构的策略，在时间方向上增加精细度和复杂度。这构成了具有叶状结构和体积功能的血管化材料设计的基础。尝试新方法的应用是三维物体的体积冷却或加热，并应用于电子设备的冷却和燃料电池的包装。获胜的架构将是这样的，他们创造了最好的挂毯的高峰和低谷的温度，与最高峰（热点剃到最低可能的水平）。这种确定体积流系统最佳配置的综合方法有望解决按比例放大的设计问题（使用小模型来预测大尺度下的行为），并揭示自组织和动物器官设计的自然现象。 这个项目的智力价值在于，整个血管化设计的全套装备都是基于在所有尺度上具有普遍适用性的物理原理。理论观点认为，所有这些设计现象涉及全球？流动？这些建筑是？还活着吗？有流量。可持续设计是指在整个流动区域中平衡和优化分布不完美（流动阻力、成本、危险、阻塞点）的设计。这种综合方法战略性地导致最大的全局性能，并发现流架构。 关于更广泛的影响，血管化流动系统的概念和基于原则的方法来发现全球设计适用于所有尺度，从纳米和微米尺度（电子，燃料电池）到人类尺寸（紧身衣，车身）。这种基本方法适用于从工程到生物学和物理学的所有领域。虽然即使没有这样一个理论范式，人类也能正确地对场中的流动缺陷做出反应，但通常他们是在零碎的基础上通过试错来做出反应的。他们的反应不了解更大的系统以及它如何与当地问题联系在一起。这个项目教导如何积极主动，设计（心理观点）来自原则，并受益于所有自然，有生命和无生命的流动设计提供的强大支持。