Constructal design of a semi-elliptical fin inserted in a lid-driven square cavity with mixed convection

Razera, A.L.; Fonseca, Roberta Juliana Collet da; Isoldi, Liércio André; Santos, Elizaldo Domingues dos; Rocha, Luíz Alberto Oliveira; Biserni, Cesare

doi:10.1016/j.ijheatmasstransfer.2018.05.157

Cited by 37 publications

(11 citation statements)

References 41 publications

(49 reference statements)

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“…31 The applications of constructal design cover many engineering fields such as heat and mass transfer, renewable energy, manufacture, and materials. [31][32][33] Until now, the few applications of constructal theory in medicine were within the field of cancer treatments, as studied by Wang et al 34 and Lucia and Grisolia, 35 and vision, in two papers by Lucia et al 36,37 Based on the constructal design method, this study seeks to investigate the effect of geometric parameters on the flow through a bypass graft circumventing an idealized, partially stenosed coronary artery. To this end, a CFD model and design of experiments and response surface methodologies were used to evaluate the effect of geometric parameters on pressure drop in different flow conditions.…”

Section: Introductionmentioning

confidence: 99%

“…This design methodology has the objectives of accessing the effects of shape and geometry in flow performance and finding the optimal geometry according to constructal law 31 . The applications of constructal design cover many engineering fields such as heat and mass transfer, renewable energy, manufacture, and materials 31–33 . Until now, the few applications of constructal theory in medicine were within the field of cancer treatments, as studied by Wang et al 34 and Lucia and Grisolia, 35 and vision, in two papers by Lucia et al 36,37 …”

Section: Introductionmentioning

confidence: 99%

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Constructal design of an arterial bypass graft

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Constructal design of an arterial bypass graft

et al. 2020

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“…They found that the optimum case occurs at fin number equals to N = 16 when the fin material fraction was 0.1 for both constant surface temperature and constant heat flux conditions. Other constructal designs from different fin shapes (Y‐T shaped fins, pin fins, helm‐shaped fins, and fins with lid driven enclosure) can be found in Lorenzini and Oliveira Rocha, 19 Bello‐Ochende et al, 20 Feng et al, 21 and Razera et al 22 …”

Section: Introductionmentioning

confidence: 99%

Constructal design of longitudinally finned tubes cooled by forced convection

2020

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The constructal design method is used in the present study to find the configuration of longitudinally finned tubes cooled by forced convection. The finned tubes are arranged in parallel inside a fixed two-dimensional domain. Two degrees of freedom inside the domain are considered for the design. The first degree of freedom is the tube-to-tube spacing, and the second is the length of the longitudinal fin.For both these degrees of freedom, a three-fin position inside the domain is considered. The fin is placed in the front, back, and front and back of the tube in the first, second, and third positions, respectively. Maximization of the heat flow density (heat transfer/ volume) from the finned tubes to the cold cross flow is the objective function of the present study. For the three fin positions, the constant pressure difference between the upstream and the downstream drives the cross flow. The dimensionless continuity, momentum, and energy equations for two dimensional, steady, and incompressible flows are solved by discretizing it according to the finite volume method. The thermal condition of the fins and the tubes is constant surface temperature. The dimensionless pressure drop known as Bejan number is varied in the range of 10 3 ≤ Be ≤ 10 5 . The fin length is changed from L f = 0 (unfinned tube) to L f = 0.2, 0.4, and 0.4. The tubes are cooled by air (Prandtl number = 0.71).The results illustrated that for the considered Bejan numbers and fin positions, the spacing between the unfinned and the finned tubes can be adjusted to optimal spacing such that the heat flow from the tubes to the coolant is maximum. K E Y W O R D SBejan number, constructal design, forced convection, longitudinally finned tubes

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“…Bornoff and Parry [9] proposed an additive design methodology based on constructal theory but applied to the design of a forced convection cooled heat sink. Recent studies apply constructal theory to other heat transfer problems such as convective heat transfer in nanofluid flow [10], microchannel network heat sinks [11], semi-elliptical morphing fins [12], etc.…”

Section: Introductionmentioning

confidence: 99%

Design and testing of topology optimized heat sinks for a tablet

Martínez-Maradiaga

Damonte

Manzo

et al. 2019

International Journal of Heat and Mass Transfer

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Constructal design of a semi-elliptical fin inserted in a lid-driven square cavity with mixed convection

Cited by 37 publications

References 41 publications

Constructal design of an arterial bypass graft

Constructal design of an arterial bypass graft

Constructal design of longitudinally finned tubes cooled by forced convection

Design and testing of topology optimized heat sinks for a tablet

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