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FARKLI SOĞUK DUVAR SICAKLIKLARININ OSİLASYONLU YÜZEY GERİLİM KONVEKSİYONA GEÇİŞE ETKİLERİ

EFFECTS OF TRANSITION TO OSCILATORY THERMOCAPILLARY CONVECTION UNDERVARIOUS COLD WALL TEMPERATURES

Journal Name:

  • Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi

Publication Year:

  • 2011

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
In this study, the transition from the steady to oscillatory thermocapillary convection flow of a rectangular container configuration under various cold wall temperatures effects have been investigated experimentally. Steady flow and temperature oscillations were observed under various conditions using 5 cSt silicone oil as a test fluid. The critical temperature differences were measured for various conditions and flow patterns were observed by a microscope system. The effect of heat transfer from the liquid free surface to surrounding air on the onset of the oscillations was investigated.
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Abstract (Original Language): 
Bu çalışmada, dikdörtgen kap konfigürasyonu içerisindeki akışkanın farklı soğuk duvar sıcaklıkları altında kararlı yüzey gerilim konveksiyondan osilasyonlu yüzey gerilim konveksiyona geçişi deneysel olarak araştırılmıştır. Deney akışkanı olarak kinematik viskozitesi 5 cSt olan silikon yağı kullanılmış ve bu akışkanın farklı şartlar altında kararlı akış ve sıcaklık osilasyonları incelenmiştir. Farklı şartlar için kritik sıcaklık farkı ölçülmüş ve akış şekilleri mikroskop sistemi sayesinde gözlenmiştir. Akışkanın serbest yüzeyinden ortama olan ısı kaybının osilasyona başlama noktasına olan etkisi araştırılmıştır.
FULL TEXT (PDF): 
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  • 1
24-38
  • Turkish

REFERENCES

References: 

Chun C. H., Wuest W. (1979): “Experiments on Transition from Steady to Oscillatory
Marangoni Convection of a Floating Zone Under Reduced Gravity Effect”, Acta
Astronautica, 6, s. 1073-1082.
Kamotani Y., Lee J. H., Ostrach S., Pline A. (1992): “An Experimental Study of Oscillatory
Thermocapillary Convection in Cylindrical Containers”, Physics of Fluids A, 4, s. 955-
962.
Kamotani Y., Ostrach S., Pline A. (1993): “A Thermocapillary Convection Experiments in
Microgravity”, Heat Transfer in Microgravity (Avedesian, C.T., and Arpacı, V.A., eds)
ASME, 289, s. 23-30.
Kamotani Y., Ostrach S., Pline A. (1994): “Analysis of Velocity Data Taken in Surface
Tension Driven Convection Experiment in Microgravity”, Physics of Fluids, 6, 11, s.
3601-3609.
Kamotani Y. (1999): “Thermocapillary Flow Under Microgravity–Experimental Results”,
Advanced Space Research, 24, 10, s. 1357-1366.
Kamotani Y., Wang L., Hatta S., Selver R., Yoda S. (2001a): “Effect of Free Surface Heat
Transfer on Onset of Oscillatory Thermocapillary Flow of High Prandtl Number Fluid”,
Journal of Japan Society of Microgravity Applications, 18, 4, s. 283-288.
Kamotani Y., Wang L., Hatta S., Selver R., Bhunia P. S., Yoda S. (2001b): “Effect of Old
Wall Temperature on Onset of Oscillatory Thermocapillary Flow”, 39 th AIAA Aerospace
Sciences Meeting and Exhibit, 8-11 January,Reno, NV.
Kamotani Y., Wang L., Hatta S., Wang A., Yoda S. (2003): “Free Surface Heat Loss Effect on
Oscillatory Thermocapillary Flow in Liquid Bridges of High Prandtl Number Fluids”,
International Journal of Heat and Mass Transfer, 46,s. 3211-3220.
Katı E. (2007): “Yüzey Gerilim Hareketi Yapan Akışkanın Sıcaklık Profilinin Matematiksel
Çıkarılması”, SDÜ Fen Bilimleri Enstitüsü, Yüksek Lisans Semineri, Isparta.
Katı E. (2009): “Yarı İletken Malzemeler İçin Termokapiler Konveksiyon Üzerine Deneysel
Bir Çalışma”, SD. Fen Bilimleri Enstitüsü, Yüksek Lisans Tezi, Isparta.
Lavalley R., Amberg G., Alfredsson H. (2001): “Experimental and Numerical Investigation of
Nonlinear Thermocapillary Oscillations in a Annular Geometry”, Europen Journal of
Mechanics B–Fluids, 20, s. 771-797.
Lee J. H. (1990): “An Experimental Study of Thermocapillary Convection in a Cylindrical
Container”,Case Western Reserve University, Ms. thesis, Cleveland, Ohio.
Napalitano L. G., Monti R., Russo G. (1986): “Marangoni Convection in One and Two
Liquids Floating Zones”, Naturwissenschaften, 73,s. 352-360.
Ostrach S. (1977): “Motion Induced by Capillarity”, Physico-Chemical Hydrodynamics, 2, s.
571-589.
Schwabe D., Scharmann A., Preisser F., Oder R. (1978): “Experiments on Surface Tension
Driven Flow in Floating Zone Melting”,Journal of Crystal Growth, 43, s. 305-312.
Schwabe D., Moller V., SchneiderJ., Scharmann A. (1992): “Instabilities of Shallow Dynamic
Thermocapillary Liquid Layers”, Physics of Fluids A, 4, 11,s. 2368-2381.
Selver R. (2005): “Experiments on the Transition From the Steady to the Oscillatory
Marangoni Convection of a Floating-Zone Under Various Cold Wall Temperatures and
Various Ambient Air Temperature Effects”, Microgravity Science and Technology, 17, 4,
s. 25-35.
Sim B.C. (2002): “Thermocapillary Convection in Cylindrical Geometries”, The State
University of New Jersey, PhD thesis, New Jersey.
Sim B. C., Zebib A. (2002): “Thermocapillary Convection with Undeformable Curved
Surfaces in Open Cylinders”, International Journal of Heat and Mass Transfer, 45, s.
4983-4994.
Sim B. C., Kim W. S., Zebib A. (2004): “Axisymmetric Thermocapillary Convection in Open
Cylidrical Annuli with Deforming Interface”, International Journal of Heat and Mass
Transfer, 47, s. 5365-5373.

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