SavedAdd your journal

Journals / Uludağ Üniversitesi Mühendislik Fakültesi Dergisi / 2013 / Cilt: 18 - Sayı: 1

Analysis of Separated Flow over Blocked Surface

Bloklu Yüzey Üzerinde Ayrılmış Akışın İncelenmesi

Onur YEMENİCİ
Z. Abidin FIRATOĞLU
Pages
27–33
Publication Date
2013-04-01
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

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

The flow separations and reattachments were occurred before the first block, on the first block, between blocks and after the last block, and the presence of the blocks significantly increased the turbulent intensity

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, the separated flow over flat and blocked surfaces was investigated experimentally.
📊
Key Findings & Data:Velocity and turbulence intensity measurements were carried out by a constanttemperature hot wire anemometer and static pressure measurements by a micro-manometer.
💡
Conclusion & Impact:The flow separations and reattachments were occurred before the first block, on the first block, between blocks and after the last block, and the presence of the blocks significantly increased the turbulent intensity
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Bloklu yüzey · Ayrılmış akış · Türbülans yoğunluğu

Abstract

In this study, the separated flow over flat and blocked surfaces was investigated experimentally. Velocity and turbulence intensity measurements were carried out by a constanttemperature hot wire anemometer and static pressure measurements by a micro-manometer. The flow separations and reattachments were occurred before the first block, on the first block, between blocks and after the last block, and the presence of the blocks significantly increased the turbulent intensity

Özet

Bu çalışmada; düz ve bloklu yüzeyler üzerinde ayrılmış akış deneysel olarak incelenmiştir. Hız ve türbülans yoğunlukları ölçümleri sabit sıcaklıklı bir kızgın tel anemometresi ile yapılırken statik basınç ölçümleri bir mikro manometre ile yapılmıştır. İlk bloktan önceki yüzeyde, ilk bloğun üstünde, bloklar arasında ve son bloğun arkasındaki yüzeyde ayrılma ve yeniden birleşmeler oluşmuş ve blokların varlığı türbülans yoğunluğunu önemli derecede arttırmıştır

🔖

Cite This Article

YEMENİCİ, O., FIRATOĞLU, Z. A. (2013). Analysis of Separated Flow over Blocked Surface. Uludağ Üniversitesi Mühendislik Fakültesi Dergisi, Cilt: 18 - Sayı: 1, 27–33. https://ajindex.com/articles/708861

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (14)

  1. Armaly, B.F., Li, A. ve Nie, J.H. (2001). Three-dimensional forced convection flow adjacent to backward-facing step. Journal of Thermophysics and Heat Transfer, 16, 222- 227. Atlı, V. (1988). Subsonic flow over a two dimensional obstacle immersed in a turbulent boundary layer on a flat surface, J. Wind Eng. Ind. Aerodyn., 31, 225-239.
  2. Buchlin, J.M. (2002). Convective heat transfer in a channel with perforated ribs, Int. J. Therm. Sci., 41, 332-340.
  3. Chen, Y.M. ve Wang, K.C. (1996). Simulation and measurement of turbulent heat transfer in a channel with a surface-mounted rectangular heated block, Heat and Mass Transfer, 31, 463-473.
  4. Davalath, J. ve Bayazıtoglu, Y. (1987). Forced convection cooling across rectangular blocks, Journal of Heat Transfer, 109, 321-328.
  5. Faghri, M., Molki, M. ve Chrupcala (1994). J. Entrance analysis of turbulent flow in an array of heated rectangular blocks, Intersoc. Conf. Thermal Phenom., Washington DC, USA., 18, 198-206.
  6. Furukawa, T. ve Yang, W. (2003). Thermal-fluid flow in parallel boards with heat generating blocks, International Journal of Heat and Mass Transfer, 46, 5005–5015.
  7. Igarashi, T. ve Takasaki, H. (1992). Fluid flow around three rectangular blocks in a flat- plate laminar boundary layer, Experimental Heat Transfer, 5, 17-31.
  8. Kim, S.H. ve Anand, N.K. (1994). Turbulent heat transfer between a series of parallel plates with surface-mounted discrete heat sources, Journal of Heat Transfer, 116, 577-587.
  9. Kline, S.J. ve McClintock, F.A. (1953). Describing uncertainties in single sample experiments, Mech. Eng., 75, 3-8.
  10. Korichi, A. ve Oufer, L. (2006). Heat transfer enhancement in oscillatory flow in channel with periodically upper and lower walls mounted obstacles, International Journal of Heat and Fluid Flow, 52, 1138-1148.
  11. Ryu, D.N., Choi, D.H. ve Patel, V.C. (2007). Analysis of turbulent flow in channels roughened by two-dimensional ribs and three-dimensional blocks. Part I: Resistance, International Journal of Heat and Fluid Flow, 28, 1098-1111.
  12. Terekhov, V.I., Yarygina, N.I. ve Zhdanov, R.F. (2003). Heat transfer in turbulent separated flows in the presence of high free-stream turbulence, International Journal of Heat and Mass Transfer, 46, 4535–4551.
  13. Tropea, C.D. ve Gackstatter, R. (1985). The flow over two-dimensional surface-mounted obstacles at low Reynolds numbers, Journal of Fluids Engineering, 107, 489-494.
  14. Wahidi, R., Chakrouni, W. ve Al-Fahed, S. (2005). The behavior of the skin-friction coefficient of a turb