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

Flow and heat transfer characteristics of inclined jet impingement on a flat plate

Düz Yüzey Üzerine Çarpan Eğik Jetin Akış ve Isı Transferi Karakteristikleri

Tamer ÇALIŞIR
Amir LAK
Şenol BAŞKAYA
Pages
697–706
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Simulations were performed for differentdimensionless jet-to-plate distances (2 < H/D < 8), inclination angle of the jet (45° < α < 90°), and Reynolds number (1500 < Re

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The effects of a turbulent inclined jet impinging on a horizontal flat surface were investigated numerically with respect to the flowfield and heat transfer characteristics.
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Key Findings & Data:Main purpose of the study was to show the effects of inclined jet impingement on flowcharacteristics, which affects the heat transfer on a surface with a constant heat flux.
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Conclusion & Impact:Simulations were performed for differentdimensionless jet-to-plate distances (2 < H/D < 8), inclination angle of the jet (45° < α < 90°), and Reynolds number (1500 < Re
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The effects of a turbulent inclined jet impinging on a horizontal flat surface were investigated numerically with respect to the flowfield and heat transfer characteristics. Main purpose of the study was to show the effects of inclined jet impingement on flowcharacteristics, which affects the heat transfer on a surface with a constant heat flux. Simulations were performed for differentdimensionless jet-to-plate distances (2 < H/D < 8), inclination angle of the jet (45° < α < 90°), and Reynolds number (1500 < Re

Özet

Yatay düz bir yüzeye çarpan türbülanslı eğik jetlerin etkileri, akış alanı ve ısı transferi özellikleri bakımından sayısal olarak incelenmiştir. Çalışmada, sabit ısı akısına sahip bir yüzeyde ısı transferini etkileyen eğik jet çarpmasının akış karakteristiklerine etkisinin gösterilmesi amaçlanmıştır. Farklı boyutsuz jet-plaka mesafeleri (2 < H/D < 8), jet eğim açıları (45° < α < 90°) ve Reynolds sayıları (1500 < Re < 30000) için simülasyonlar gerçekleştirilmiştir. Isı transferi ve akış karakteristikleri, sıcaklık konturları ve hız vektörleri kullanılarak irdelenmiştir. Simülasyon sonuçları literatürde yer alan deneysel veriler ile doğrulanmış ve oldukça iyi bir uyum sağlanmıştır. Jet eğim açısının azaltılması ile birlikte maksimum ısı transferinde azalmanın olduğu sonuçlardan görülmüştür. Maksimum Nusselt sayısının durma noktası Nusselt sayısına oranı jet eğim açısının artması ile birlikte artmaktadır.

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Cite This Article

ÇALIŞIR, T., LAK, A., BAŞKAYA, Ş. (2022). 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/588438

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References (14)

  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 characteristics 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 impinging circular, air jet to a flat plate”, International Journal of Heat and Fluid Flow, 18(6): 591-599, (1977)
  14. Akansu, Y. E., Sariogl