KaydedilenlerDerginizi ekleyin

Dergiler / Politeknik Dergisi / 2020 / Cilt: 23 - Sayı: 3

Flow and Heat Transfer Characteristics of Inclined Jet Impingement on a Flat Plate

Flow And Heat Transfer Characteristics Of Inclined Jet Impingement On A Flat Plate

Amir LAK
TAMER ÇALIŞIR
Şenol BAŞKAYA
Sayfa
697–706
DOI
—
🏛️Bu makalenin bibliyografik verileri ve tam metin bağlantısı DergiPark üzerinden sağlanmıştır.
DergiPark Kaydı ↗
✨

Yapay Zeka Hızlı Bakış & Çıkarımlar

AI Insight
⚡ TL;DR(1 Cümlede Hızlı Çıkarım)

The ratio of the maximum Nusselt number to the stagnation Nusselt number increases as the jet angle is increased.

📌 3 Maddede Bu Makale

🎯
Amaç & Hipotez:The effects of a turbulent inclined jet impinging on a horizontal flat surface were investigated numerically with respect to the flow field and heat transfer characteristics.
📊
Temel Bulgular & Veri:Simulations were performed for different dimensionless jet-to-plate distances (2 < H/D < 8), inclination angle of the jet (45° < α < 90°), and Reynolds number (1500 < Re < 30000).
💡
Sonuç & Katkı:The ratio of the maximum Nusselt number to the stagnation Nusselt number increases as the jet angle is increased.
🔬Tür:Araştırma Makalesi
📍Kapsam:Genişletilmiş Akademik Örneklem
⚙️Değişkenler:Heat transfer · inclined impinging jet · Computational Fluid Dynamics(CFD)

Özet

The effects of a turbulent inclined jet impinging on a horizontal flat surface were investigated numerically with respect to the flow field and heat transfer characteristics. Main purpose of the study was to show the effects of inclined jet impingement on flow characteristics, which affects the heat transfer on a surface with a constant heat flux. Simulations were performed for different dimensionless jet-to-plate distances (2 < H/D < 8), inclination angle of the jet (45° < α < 90°), and Reynolds number (1500 < Re < 30000). The heat transfer and fluid flow characteristics have been discussed using temperature contours and velocity vectors. Initial simulation results have been validated with experimental data from the literature, and a fairly good agreement has been achieved. Results showed that by decreasing the inclination angle, a decrease in the maximum heat transfer occurs. The ratio of the maximum Nusselt number to the stagnation Nusselt number increases as the jet angle is increased.

Abstract

The effects of a turbulent inclined jet impinging on a horizontal flat surface were investigated numerically with respect to the flow field and heat transfer characteristics. Main purpose of the study was to show the effects of inclined jet impingement on flow characteristics, which affects the heat transfer on a surface with a constant heat flux. Simulations were performed for different dimensionless jet-to-plate distances (2 < H/D < 8), inclination angle of the jet (45° < α < 90°), and Reynolds number (1500 < Re < 30000). The heat transfer and fluid flow characteristics have been discussed using temperature contours and velocity vectors. Initial simulation results have been validated with experimental data from the literature, and a fairly good agreement has been achieved. Results showed that by decreasing the inclination angle, a decrease in the maximum heat transfer occurs. The ratio of the maximum Nusselt number to the stagnation Nusselt number increases as the jet angle is increased.

🔖

Bu Makaleye Atıf Yap

LAK, A., ÇALIŞIR, T., BAŞKAYA, Ş. (2020). Flow and Heat Transfer Characteristics of Inclined Jet Impingement on a Flat Plate. Politeknik Dergisi, Cilt: 23 - Sayı: 3, 697–706. https://ajindex.com/articles/306302

Kaynakça (13)

  1. O’Donovan, T. S., Murray, D. B., Torrance, A. A., “Jet heat transfer in the vicinity of a rotating grinding wheel”, Proc. ImechE Part C: J. Mechanical Engineering Science, 220: 1-11, (2006
  2. Martin, H., “Heat and Mass Transfer between Impinging Gas Jets and Solid Surfaces”, Advances in Heat Transfer, 13: 1-60, (1977)
  3. Viskanta, R., “Heat transfer to impinging isothermal gas and flame jets”, Experimental Thermal and Fluid Science, 6(2): 111-134, (1993
  4. Polat, S., Huang, B., Mujumdar, A. S., Douglas, W. J. M., “Numerical Flow and Heat Transfer under Impinging Jets: A Review”, Annual Review of Heat Transfer, 2: 157-197, (1989
  5. Lytle, D., Webb, B. W., “Air jet impingement heat transfer at low nozzle-plate spacings”, International Journal of Heat and Mass Transfer, 37(12): 1687-1697, (1994
  6. Choo, K. S., Kim, S. J., “Heat transfer charachteristics of impinging air jets under a fixed pumping power condition”, International Journal of Heat and Mass Transfer, 53(1-3): 320-326, (2010
  7. O’Donovan, T. S., Murray, D. B., “Fluctuating fluid flow and heat transfer of an obliquely impinging air jet”, International Journal of Heat and Mass Transfer, 51(25-26): 6169-6179, (2008
  8. Kilic, M., Calisir, T., Baskaya, S., “Experimental and numerical study of heat transfer from a heated flat plate in a rectangular channel with an impinging air jet”, Journal of the Brazilian Society of Mechanical Sciences and Engineering, 39(1): 329-344, (2017
  9. Kilic, M., Calisir, T., Baskaya, S., “Experimental and numerical investigation of vortex promoter effects on heat transfer from heated electronic components in a rectangular channel with an impinging jet”, Heat Transfer Research, 48(5): 435-463, (2017
  10. Schueren, S., Hoefler, F., von Wolfersdorf, J., Naik, S., “Heat Transfer in an Oblique Jet Impingement Configuration With Varying Jet Geometries”, Journal of Turbomachinery, 135(2): 021010, (2012
  11. Dogruoz, M.B., “Experimental and Numerical Investigation of Turbulent Heat Transfer due to Rectangular Impinging Jets”, Phd. Thesis, University of Arizona, (2005
  12. Beitelmal, A. H., Saad, M. A., Patel, C. D., “The effect of inclination on the heat transfer between a flat surface and an impinging two-dimensional air jet”, International Journal of Heat and Fluid Flow, 21(2): 156-163, (2000
  13. Yan, X., Saniei, N., “Heat transfer from an obliquely impining circular, air jet to a flat plate”, International Journal of Heat and Fluid Flow, 18(6): 591-599, (1