Geometry Effects on Turbulent Flow and Heat Transfer in Internally Finned Tubes

Xiaoyue Liu; Michael K. Jensen

doi:10.1115/1.1409267

Journal of Heat Transfer | Volume 123 | Issue 6 | TECHNICAL PAPERS

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TECHNICAL PAPERS: Forced Convection

Geometry Effects on Turbulent Flow and Heat Transfer in Internally Finned Tubes

Xiaoyue Liu, Mem. ASME, Mechanical Engineer and Michael K. Jensen, Fellow ASME, Professor

[+] Author and Article Information

Xiaoyue Liu

GE Corporate Research and Development Center, 1 Research Circle, Niskayuna, NY 12309e-mail: LiuXi@crd.ge.com

Michael K. Jensen

Department of Mechanical, Aerospace and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180-3590e-mail: JenseM@rpi.edu

J. Heat Transfer 123(6), 1035-1044 (May 20, 2001) (10 pages) doi:10.1115/1.1409267 History: Received December 15, 2000; Revised May 20, 2001

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(a) The local friction factor distribution for a rectangular fin (N=36,H=0.06,γ=25 deg, and s=0.1); and (b) the local Nusselt number distribution for a rectangular fin (N=36,H=0.06,γ=25 deg, and s=0.1).

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(a) The comparison of fin width effect on friction factor with different number of fins; and (b) the comparison of fin width effect on Nusselt number with different number of fins.

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(a) The turbulent kinetic energy on the interfin bisector for (N=22,H=0.06, and γ=25 deg); and (b) the turbulent kinetic energy on the interfin bisector for (N=36,H=0.06, and γ=25 deg).

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(a) The friction factor comparison for different fin profiles (N=30,H=0.10,γ=30 deg, and s=0.083); and (b) the Nusselt number comparison for different fin profiles (N=30,H=0.10,γ=30 deg, and s=0.083).

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(a) The local friction factor distribution for the round crest fin profile; and (b) the local Nusselt number distribution for the round-crest fin profile.

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(a) The friction factor comparison for different fin profiles (N=36,H=0.06,γ=25 deg, and s=0.1); and (b) the Nusselt number comparison for different fin profiles (N=36,H=0.06,γ=25 deg, and s=0.1).

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(a) The effect of fin height on friction factors (N=30); and (b) the effect of fin height on Nusselt numbers (N=30).

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(a) The effect of helix angle and number of fins on friction factors; and (b) the effect of helix angle and number of fins on Nusselt numbers.

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(a) The comparison of the predicted friction factors with experimental data for Fin 1; and (b) the comparison of the predicted Nusselt numbers with experimental data for Fin 1.

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Liu X, Jensen MK. Geometry Effects on Turbulent Flow and Heat Transfer in Internally Finned Tubes. ASME. J. Heat Transfer. 2001;123(6):1035-1044. doi:10.1115/1.1409267.

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Geometry Effects on Turbulent Flow and Heat Transfer in Internally Finned Tubes

References

Figures

(a) The local friction factor distribution for a rectangular fin (N=36,H=0.06,γ=25 deg, and s=0.1); and (b) the local Nusselt number distribution for a rectangular fin (N=36,H=0.06,γ=25 deg, and s=0.1).

(a) The comparison of fin width effect on friction factor with different number of fins; and (b) the comparison of fin width effect on Nusselt number with different number of fins.

(a) The turbulent kinetic energy on the interfin bisector for (N=22,H=0.06, and γ=25 deg); and (b) the turbulent kinetic energy on the interfin bisector for (N=36,H=0.06, and γ=25 deg).

(a) The friction factor comparison for different fin profiles (N=30,H=0.10,γ=30 deg, and s=0.083); and (b) the Nusselt number comparison for different fin profiles (N=30,H=0.10,γ=30 deg, and s=0.083).

(a) The local friction factor distribution for the round crest fin profile; and (b) the local Nusselt number distribution for the round-crest fin profile.

(a) The friction factor comparison for different fin profiles (N=36,H=0.06,γ=25 deg, and s=0.1); and (b) the Nusselt number comparison for different fin profiles (N=36,H=0.06,γ=25 deg, and s=0.1).

(a) The effect of fin height on friction factors (N=30); and (b) the effect of fin height on Nusselt numbers (N=30).

(a) The effect of helix angle and number of fins on friction factors; and (b) the effect of helix angle and number of fins on Nusselt numbers.

(a) The comparison of the predicted friction factors with experimental data for Fin 1; and (b) the comparison of the predicted Nusselt numbers with experimental data for Fin 1.

A computational model of an internally finned tube

Three fin profiles

The geometry of an internally finned tube

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