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Titolo:
Thermodynamic optimization of geometry: T- and Y-shaped constructs of fluid streams
Autore:
Bejan, A; Rocha, LAO; Lorente, S;
Indirizzi:
Duke Univ, Dept Mech Engn & Mat Sci, Durham, NC 27708 USA Duke Univ Durham NC USA 27708 t Mech Engn & Mat Sci, Durham, NC 27708 USA INSA Toulouse, Dept Civil Engn, F-31077 Toulouse, France INSA Toulouse Toulouse France F-31077 vil Engn, F-31077 Toulouse, France
Titolo Testata:
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
fascicolo: 9-11, volume: 39, anno: 2000,
pagine: 949 - 960
SICI:
1290-0729(200010/12)39:9-11<949:TOOGTA>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
FINITE-SIZE VOLUME; SYSTEMS; DESIGN;
Keywords:
thermodynamic optimization; topology optimization; structure; tree networks; constructal;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Bejan, A Duke Univ, Dept Mech Engn & Mat Sci, Durham, NC 27708 USA Duke Univ Durham NC USA 27708 gn & Mat Sci, Durham, NC 27708 USA
Citazione:
A. Bejan et al., "Thermodynamic optimization of geometry: T- and Y-shaped constructs of fluid streams", INT J TH SC, 39(9-11), 2000, pp. 949-960

Abstract

This paper presents a series of examples in which the global performance of flow systems is optimized subject to global constraints. The flow systemsare assemblies of ducts, channels and streams shaped as Ts, Ys and crosses. In pure fluid flow, thermodynamic performance maximization is achieved byminimizing the overall flow resistance encountered over a finite-size territory. In the case of more complex objectives such as the distribution of astream 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 ofthe 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 parametersof 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.

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Documento generato il 14/07/20 alle ore 03:41:09