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BLOKLU YÜZEY ÜZERİNDE AYRILMIŞ AKIŞIN İNCELENMESİ

Analysis of Separated Flow over Blocked Surface

Journal Name:

  • Uludağ Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Publication Year:

  • 2013

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
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.
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Abstract (Original Language): 
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.
FULL TEXT (PDF): 
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  • 1
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  • Turkish

REFERENCES

References: 

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.
2. 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.
3. Buchlin, J.M. (2002). Convective heat transfer in a channel with perforated ribs, Int. J.
Therm. Sci., 41, 332-340.
4. 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.
5. Davalath, J. ve Bayazıtoglu, Y. (1987). Forced convection cooling across rectangular
blocks, Journal of Heat Transfer, 109, 321-328.
6. 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.
7. 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.
8. Igarashi, T. ve Takasaki, H. (1992). Fluid flow around three rectangular blocks in a flatplate
laminar boundary layer, Experimental Heat Transfer, 5, 17-31.
9. 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.
10. Kline, S.J. ve McClintock, F.A. (1953). Describing uncertainties in single sample
experiments, Mech. Eng., 75, 3-8.
11. 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.
12. 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.
13. 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.
14. 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.
15. Wahidi, R., Chakrouni, W. ve Al-Fahed, S. (2005). The behavior of the skin-friction
coefficient of a turbulent boundary layer flow over a flat plate with differently configured
Uludağ Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi, Cilt 18, Sayı 1, 2013
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transverse square grooves, Experimental Thermal and Fluid Science, 30, 141-152.
16. Young, T.J. ve Vafai, K. (1998). Convective flow and heat transfer in a channel containing
multiple heated obstacles, International Journal of Heat and Mass Transfer, 41, 3279-
3298.

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