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Journals / Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi / 2004 / Cilt: 19 - Sayı: 3

An experimental study of surface tension driven convection flow in floating-zone configuration

Esnek bölge konfigürasyonunda yüzey gerilimi ile meydana gelen taşınımlı akışın deneysel incelenmesi

Ramazan SELVER
Nilay UGUZ
Pages
295–304
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

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

The critical temperature differences are measured for various conditions and the flow patterns are observed by a microscope system.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, an experimental study of thermocapillary flow in a floating zone configuration is investigated by flow visualization and temperature measurements.
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Key Findings & Data:A vertical liquid column is heated by top copper rod to generate predominantly thermocapillary flow.
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Conclusion & Impact:The critical temperature differences are measured for various conditions and the flow patterns are observed by a microscope system.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study, an experimental study of thermocapillary flow in a floating zone configuration is investigated by flow visualization and temperature measurements. A vertical liquid column is heated by top copper rod to generate predominantly thermocapillary flow. Flow and temperature oscillations are observed under certain conditions using 5 cSt silicone oil as the test fluid. The critical temperature differences are measured for various conditions and the flow patterns are observed by a microscope system.

Özet

Bu çalışmada, esnek bölge konfıgürasyonunun yüzey gerilimli akış hareketinin deneysel bir çalışması sıcaklık ölçümleri ve akış görüntüleri kullanılarak araştırılmıştır. Hakim olan yüzey gerilimli akış hareketinin meydana gelmesi için üst bakır çubuk tarafından dikey konumdaki akışkan kolonu ısıtılmıştır. Deney akışkanı olarak 5 cSt silikon yağı kullanılarak bazı şartlar altında akış ve sıcaklık osilasyonları gözlenmiştir. Değişen şartlar için kritik sıcaklık farkları ölçülmüş ve mikroskop sistemi sayesinde akış şekilleri gözlenmiştir.

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Cite This Article

SELVER, R., UGUZ, N. (2022). An experimental study of surface tension driven convection flow in floating-zone configuration. Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, Cilt: 19 - Sayı: 3, 295–304. https://ajindex.com/articles/524254

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References (1)

  1. Ostrach, S., Motion Induced by Capillarity, Advanced Publications, London, 1977. 2. Kamotani, Y., Ostrach, S., "Theoretical analysis of thermocapillary flow in cylindrical columns of high Prandtl number fluids", Journal, of Heat Transfer, 758-764, 1988. 3.Preisser, F., Schwabe, D., Scharmann, A., "Steady and oscillatory thermocapillary convection in liquid columns with free cylindrical surface ", J. Fluid Mech., 126, 545-567, 1982. 4.Schwabe, D., Velten, R., Scharmann, A. "The instability of surface tension driven flow in models for floating zones under normal and reduced gravity", Journal of Crystal Growth, 99, 1258-1264,1990. 5.Chun, CH. H., "Experiments on steady and oscillatory temperature distribution in a floating zone due to the Marangoni convection", Acta Astronautica, 7,479-488,1979. 6.Kamotani, Y., Wang, L., Hatta, S., Selver, R. ve Yoda, S., "Effect of free surface heat transfer on onset of oscillatory thermocapillary flow of high Prandtl number fluid", J. Jpn. Microgravity Appl., Vol. 18, No. 4, 283-288, 2001.