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Vascular structures with flow uniformity and small resistance

Publication ,  Journal Article
Lee, J; Lorente, S; Bejan, A; Kim, M
Published in: International Journal of Heat and Mass Transfer
March 1, 2009

The drive toward vascular smart materials calls for novel flow architectures that bathe and serve entire volumes and areas as uniformly as possible. Here, we show that vascular designs consisting of trees matched canopy to canopy can be configured so that they have two qualities: small flow resistance (ψ) and small volumetric flow nonuniformity (μ). In the past, the only quality sought was small flow resistance. Two classes of architectures are explored: (a) matched trees with diagonal channels through the core and (b) matched trees with orthogonal channels. First, we show that flow architectures can be developed and selected for minimum flow nonuniformity alone. Second, in the ψ - μ design space the best of designs (b) lie close to the best of designs (a), although the best of designs (b) offer slightly better configurations (low ψ and μ) than the best of designs (a). Comparisons with similar architectures generated based on genetic algorithms show that the minimum global flow resistance ψ of designs (a, b) is 2-5 times smaller than the genetic-algorithm values. The flow nonuniformities μ corresponding to the minimum ψ of designs (a, b) are 2-70 times smaller than the flow nonuniformities of the genetic-algorithm results. © 2008 Elsevier Ltd. All rights reserved.

Duke Scholars

Published In

International Journal of Heat and Mass Transfer

DOI

ISSN

0017-9310

Publication Date

March 1, 2009

Volume

52

Issue

7-8

Start / End Page

1761 / 1768

Related Subject Headings

  • Mechanical Engineering & Transports
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

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Lee, J., Lorente, S., Bejan, A., & Kim, M. (2009). Vascular structures with flow uniformity and small resistance. International Journal of Heat and Mass Transfer, 52(7–8), 1761–1768. https://doi.org/10.1016/j.ijheatmasstransfer.2008.09.027
Lee, J., S. Lorente, A. Bejan, and M. Kim. “Vascular structures with flow uniformity and small resistance.” International Journal of Heat and Mass Transfer 52, no. 7–8 (March 1, 2009): 1761–68. https://doi.org/10.1016/j.ijheatmasstransfer.2008.09.027.
Lee J, Lorente S, Bejan A, Kim M. Vascular structures with flow uniformity and small resistance. International Journal of Heat and Mass Transfer. 2009 Mar 1;52(7–8):1761–8.
Lee, J., et al. “Vascular structures with flow uniformity and small resistance.” International Journal of Heat and Mass Transfer, vol. 52, no. 7–8, Mar. 2009, pp. 1761–68. Scopus, doi:10.1016/j.ijheatmasstransfer.2008.09.027.
Lee J, Lorente S, Bejan A, Kim M. Vascular structures with flow uniformity and small resistance. International Journal of Heat and Mass Transfer. 2009 Mar 1;52(7–8):1761–1768.
Journal cover image

Published In

International Journal of Heat and Mass Transfer

DOI

ISSN

0017-9310

Publication Date

March 1, 2009

Volume

52

Issue

7-8

Start / End Page

1761 / 1768

Related Subject Headings

  • Mechanical Engineering & Transports
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences