Heat transfer and friction in tubes with repeated-rib roughness

Webb, Ralph L.; Eckert, E. R. G.; Goldstein, R. J.

doi:10.1016/0017-9310(71)90009-3

Cited by 647 publications

(277 citation statements)

References 12 publications

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“…The validation of the numerical model by comparing the internal and external flow with experimental [22] and semi-empirical [23,24] data was developed. The pressure drop in the internal flow obtained through the numerical solution and semi-empirical [23,24] data, offers a close enough agreement, with an absolute difference of 3.25%.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Conjugate Heat Transfer in Ribbed Cylindrical Channels

Gallegos-Muñoz¹,

Uzarraga-Rodriguez²,

Elizalde‐Blancas³

2012

An Overview of Heat Transfer Phenomena

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Section: Discussionmentioning

confidence: 99%

“…Webb [24] used Equation (15) to calculate frictional data for turbulent flows in ribbed tubes with circular cross-section, obtaining excellent results. They found that the roughness function could be correlated as Equation (17).…”

Section: Comparison With Experimental and Semi-empirical Correlation mentioning

confidence: 99%

Conjugate Heat Transfer in Ribbed Cylindrical Channels

Gallegos-Muñoz¹,

Uzarraga-Rodriguez²,

Elizalde‐Blancas³

2012

An Overview of Heat Transfer Phenomena

View full text Add to dashboard Cite

“…Frequently, the thermal efficiency index g (see Eq. (1)), is used to quantify the effect of roughness on heat transfer and pressure drop [13].…”

Section: Evaluation Of Heat Transfer Enhancementmentioning

confidence: 99%

Evaluation of Heat Transfer on Micro‐Structured Surfaces Based on Entropy Production

Jasch

Scholl

2013

Chem Eng & Technol

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Surface structures with a well-defined shape and dimension in a staggered arrangement were evaluated in terms of their capability to improve the singlephase convective heat transfer in channels with small dimensions. Two evaluation criteria were used: (i) the thermal efficiency index, defined by the ratio of heat transfer enhancement and pressure drop increase, and (ii) the irreversible entropy generation which is determined by the entropy production rates through heat conduction and dissipation. Beside experimental measurements, parametric studies were performed using computational fluid dynamics to establish the entropy generation rates within the heated flow channel.

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“…In [3][4][5] it was shown that heat transfer enhancement in tubes with annular knurling within the range of Reynolds numbers 600...3.8·10 3 may reach the factor of 1.06... 14.01. At that, the pressure loss may increase by 0.92...19.7 times.…”

Section: Introductionmentioning

confidence: 99%

Experimental study of turbulent forced convection of nanofluid in channels with cylindrical and spherical hollows

Минаков

Guzei

Meshkov

et al. 2017

International Journal of Heat and Mass Transfer

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Experimental study of forced turbulent convection of water-based nanofluids with nanoparticles of zirconium oxide (ZrO2) was carried out in smooth tubes and channels with wall heat transfer enhancers. Nanopowders with average particle size of 44 and 105 nm were used in the experiments. The Reynolds number ranged from 3000 to 8000. It is revealed that the increments in the heat transfer coefficient and the pressure drop when using nanofluids depend on the surface shape of the channel. It is shown that nanofluids allow reaching thermal-hydraulic efficiency comparable to that of the channels with artificial heat transfer enhancers.

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Heat transfer and friction in tubes with repeated-rib roughness

Cited by 647 publications

References 12 publications

Conjugate Heat Transfer in Ribbed Cylindrical Channels

Conjugate Heat Transfer in Ribbed Cylindrical Channels

Evaluation of Heat Transfer on Micro‐Structured Surfaces Based on Entropy Production

Experimental study of turbulent forced convection of nanofluid in channels with cylindrical and spherical hollows

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