Effects of tapes with double-sided delta-winglets on heat and vortex characteristics

Yakut, Kenan; Sahin, Bayram; Çelik, Cafer; ALEMDAROGLU, N; KURNUC, A

doi:10.1016/j.apenergy.2004.03.003

Makale Tam Makale Uluslararası 2005

Effects of tapes with double-sided delta-winglets on heat and vortex characteristics

Kenan Yakut, Bayram Sahin, Cafer Çelik, N ALEMDAROGLU, A KURNUC

APPLIED ENERGY Cilt 80 · Sayı 1 · ss. 77–95 · 01.01.2005

DOI ile aç

Özet

An experimental study was carried out for tapes with double-sided delta-winglets under different geometrical and flow parameters, including angles of attack (90degrees, 60degrees and 30degrees), winglet heights (8, 12 and 16 mm), pitch arrangements (25, 50 and 75 mm) and Reynolds numbers (3690, 10493 and 16906). By using the Taguchi experimental-design method, the optimum parameters of the turbulator were determined by obtaining the Nusselt number, friction factor, amplitude of fluctuation pressure of the vortices and the vortex-shedding frequency. First of all, each goal was optimized, separately. Then, all the goals were optimized together, considering the priority of the goals, and the optimum results were obtained at a Reynolds number of 16906, 25 mm pitch, 8 mm height of winglet and 30degrees angle of attack, so that vortex-shedding frequencies are maximised. For lower frequencies, optimum conditions occurred at a Reynolds number of 16906 for 75 mm pitch, 8 mm height of winglet and 60degrees angle of attack. (C) 2004 Elsevier Ltd. All rights reserved.

Anahtar kelimeler

DESIGN Taguchi method LINE QUALITY-CONTROL heat transfer enhancement delta-winglet flow-induced vibration TRANSFER ENHANCEMENT LONGITUDINAL VORTICES ACOUSTIC-RESONANCE CHANNEL FLOW TUBE EXCHANGERS GENERATORS

Atıf için künye

Yakut, K., Sahin, B., Çelik, C., ALEMDAROGLU, N., & KURNUC, A. (2005). Effects of tapes with double-sided delta-winglets on heat and vortex characteristics. APPLIED ENERGY, 80(1), 77–95. https://doi.org/10.1016/j.apenergy.2004.03.003

BibTeX

@article{yakut2005-181840,
  author = {Yakut, Kenan and Sahin, Bayram and Çelik, Cafer and ALEMDAROGLU, N and KURNUC, A},
  title = {Effects of tapes with double-sided delta-winglets on heat and vortex characteristics},
  journal = {APPLIED ENERGY},
  year = {2005},
  volume = {80},
  number = {1},
  pages = {77--95},
  issn = {0306-2619},
  doi = {10.1016/j.apenergy.2004.03.003},
  url = {https://akademik.atauni.edu.tr/yayinlar/181840-effects-of-tapes-with-double-sided-delta-winglets-on-heat-and-vortex}
}