Journal of Enhanced Heat Transfer Theory and Application in High Performance Heat and Mass Transfer

ISSN for PRINT: 1065-5131

For Online Access

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2004, Volume11

Issue 4

232 pages

DOI: 10.1615/JEnhHeatTransf.v11.i4

Issue price - $138.00

Ji-An Meng
School of Aerospace, Department of Engineering Mechanics, Education Ministry Key Lab of Enhanced Heat Transfer and Energy Conservation, Tsinghua University, Beijing 100084, China

Xing-Gang Liang
Department of Engineering Mechanics, Education Ministry Key Lab of Enhanced Heat Transfer and Energy Conservation, Tsinghua University, Beijing 100084, China

Zhi-Xin Li
School of Aerospace, Department of Engineering Mechanics, Education Ministry Key Lab of Enhanced Heat Transfer and Energy Conservation, Tsinghua University, Beijing 100084, China

Zeng-Yuan Guo
Department of Engineering Mechanics, Education Ministry Key Lab of Enhanced Heat Transfer and Energy Conservation, Tsinghua University, Beijing 100084, China

This work numerically investigates the convection of the novel alternate elliptical axis tube by FLUENT 6.0 with laminar, Reynolds stress, and RNG k-ε models. The Nusselt numbers are found to be increased 100−500% for Re=500−2300 with low cost in resistance increase. The enhancement is due to the multi-longitudinal vortices. The comparison with experiments for Re = 500−10,000 shows that the Nusselt number obtained from different models all agree well with experiments. As for the resistance coefficient prediction, the Reynolds stress model is very close to the experiments for Re = 500−2500, and the RNG k-ε model is very close to experiments for Re < 4000.

DOI: 10.1615/JEnhHeatTransf.v11.i4.80 Download article, 307-314 pages

Article price - $35.00

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