Thermodynamic optimization of geometry: T- and Y-shaped constructs of fluid streams
Thermodynamic optimization of geometry: T- and Y-shaped constructs of fluid streams
复制标题
DOI：
10.1016/s1290-0729(00)01176-5
复制
发表时间：
2000-10-01
影响因子：
4.5
通讯作者：
Lorente, S
中科院分区：
文献类型：
--
作者：
Bejan, A;Rocha, LAO;Lorente, S
本文给出了一系列在全局约束条件下优化流动系统整体性能的实例。流动系统是由形状为T、Y和十字的管道、渠道和溪流组成的总成。在纯流体流动中，热力学性能最大化是通过最小化有限尺寸区域内遇到的总体流动阻力来实现的。在更复杂的目标的情况下，例如在一个区域内分配热水流，性能最大化需要最小化流动阻力和整个网络的热泄漏。总而言之，这些例子表明，流动系统的几何结构源于全局约束下的全局性能最大化原则。从原理上推导了优化流动结构的每一个几何细节。优化的结构(设计、体系结构)对于系统的一些参数的变化是稳健的。本文展示了几何最优化方法如何扩展到其他领域，例如城市水力学，以及未来的火用分析和热经济学。(C)2000年版《科学与药物》为爱思唯尔公司提供药物。
This paper presents a series of examples in which the global performance of flow systems is optimized subject to global constraints. The flow systems are assemblies of ducts, channels and streams shaped as Ts, Ys and crosses. In pure fluid flow, thermodynamic performance maximization is achieved by minimizing the overall flow resistance encountered over a finite-size territory. In the case of more complex objectives such as the distribution of a stream of hot water over a territory, performance maximization requires the minimization of flow resistance and the leakage of heat from the entire network. Taken together, these examples show that the geometric structure of the flow system springs out of the principle of global performance maximization subject to global constraints. Every geometric detail of the optimized flow structure is deduced from principle. The optimized structure (design, architecture) is robust with respect to changes in some of the parameters of the system. The paper shows how the geometric optimization method can be extended to other fields, e.g., urban hydraulics and, in the future, exergy analysis and thermoeconomics. (C) 2000 Editions scientifiques et medicates Elsevier SAS.