Open Access Open Access  Restricted Access Subscription or Fee Access

Performance Evaluation of Turbulent Tree-Shaped Flow. Part 1: T-Shaped Assembles

Ventsislav Zimparov(1*), Milcho Angelov(2), Valentin Petkov(3)

(1) Technical University of Gabrovo, Bulgaria
(2) University of food technologies, Bulgaria
(3) Technical University of Gabrovo, Bulgaria
(*) Corresponding author


DOI's assignment:
the author of the article can submit here a request for assignment of a DOI number to this resource!
Cost of the service: euros 10,00 (for a DOI)

Abstract


Performance characteristics of turbulent flow in two T- and Y-shaped assemblies of ducts have been performed. The objective is to identify the best geometric configuration of each assembly for maximum thermodynamic benefit. Performance evaluation criterion proposed in previous paper was used to evaluate the effectiveness of the two tree-shaped design for heat exchanger application. The boundary condition on the wall of each duct was fixed heat flow per unit length. The flow is assumed turbulent fully developed. This criterion compares the entropy generated in the system with the heat transfer performance achieved. The first part of the paper considers the T- shapes assembles of ducts.
Copyright © 2017 Praise Worthy Prize - All rights reserved.

Keywords


Constructal Theory; Turbulent Tree-Shaped Flow; Entropy Generation Minimization

Full Text:

PDF


References


A. Bejan, Shape and Structure, from Engineering to Nature, Cambridge University Press, Cambridge, UK, 2000.

A. Bejan, S. Lorente, Design with Constructal Theory, Wiley, New Jersey, 2008.

A. Bejan, L. A. O. Rocha, S. Lorente, Thermodynamic optimization of geometry: T- and Y-shaped constructs of fluid streams, Int. J. Therm. Sci. 30 (2000) 949-960.
http://dx.doi.org/10.1016/s1290-0729(00)01176-5

W. Wechsatol, S. Lorente, A. Bejan, Optimal tree-shaped networks for fluid flow in a disc-shaped body, Int. J. Heat Mass Tranfer 45 (2002) 4911-4924.
http://dx.doi.org/10.1016/s0017-9310(02)00211-9

D.V. Pence, Reduced pumping power and wall temperature in microchannel heat sinks with fractal-like branching channel networks, Microscale Thermophys. Eng. 6 (2002) 319-330.
http://dx.doi.org/10.1080/10893950290098359

Chen Y., Cheng P., Heat transfer and pressure drop in fractal tree-like microchannel nets, Int. J. Heat Mass Transfer 45 (2002) 2643-2648.
http://dx.doi.org/10.1016/s0017-9310(02)00013-3

S. M. Senn, D. Poulikakos, Laminar mixing, heat transfer and pressure drop in tree-like microchanel nets and their application for thermal menagment in polymer electrolyte fuel cells, J. Power Sour. 130 (2004) 178-191.
http://dx.doi.org/10.1016/j.jpowsour.2003.12.025

S. M. Senn, D. Poulikakos, Tree network channels as fluid distributors constructing double-staircase polymer electrolyte fuel cells, J. Appl. Phys. 96(1) (2004) 842-852
http://dx.doi.org/10.1063/1.1757028

V. D. Zimparov, A.K. da Silva, A. Bejan, Thermodynamic optimization of tree-shaped flow geometries, Int. J. Heat Mass Transfer 49 (2006) 1619-1630.
http://dx.doi.org/10.1016/j.ijheatmasstransfer.2005.11.016

V. D. Zimparov, A.K. da Silva, A. Bejan, Thermodynamic optimization of tree-shaped flow geometries with constant channel wall temperature, Int. J. Heat Mass Transfer 49 (2006) 4839-4849.
http://dx.doi.org/10.1016/j.ijheatmasstransfer.2006.05.024

H. Feng, C. Lingen, X. Zhihui, S. Fengrui, Constructal entropy generation rate minimization for X-shaped vascular networks, Int. J. Heat Mass Transfer 92 (2015) 129-137.
http://dx.doi.org/10.1016/j.ijheatmasstransfer.2015.08.045

W. Wechsatol, S. Lorente, A. Bejan, Tree-shaped flow structures with local junction losses, Int. J. Heat Mass Transfer 49 (2006) 2957-2964.
http://dx.doi.org/10.1016/j.ijheatmasstransfer.2006.01.047


Refbacks

  • There are currently no refbacks.



Please send any question about this web site to info@praiseworthyprize.com
Copyright © 2005-2020 Praise Worthy Prize