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ISSN Печать: 1065-5131
ISSN Онлайн: 1563-5074
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Numerical Study on Low Reynolds Number Convection in Alternate Elliptical Axis Tube
Краткое описание
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.
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