Theoretical Study Regarding the Flow Conditions for Alloys through Thin Channels

  • Ioan MARGINEAN Politehnica University of Bucharest, Romania
  • Bogdan-Alexandru VERDES Politehnica University of Bucharest, Romania
  • Sorin-Adrian COCOLAS Politehnica University of Bucharest, Romania
Keywords: thin channel, flow, limit conditions, capillarity, surface tension

Abstract

A common tool used to demonstrate the phenomenon of movement of liquids through thin channels is the capillary tube. When the lower end of the tube is placed vertically in a liquid (such as water), it forms a concave film. Surface tension pulls the liquid column up until there is a sufficient mass of liquid for gravitational forces to overcome intermolecular forces. The contact length (around the edge) between the top of the liquid column and the tube is proportional to the diameter of the tube, while the weight of the liquid column is proportional to the square of the tube's diameter, so a narrow tube will draw a liquid column higher than a wide tube. This paper wants to bring theoretical arguments to the possible flowing limits for alloys through thin channels.

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References

[1]. Campbell, J.-Castings. Butterworld Heinemann, 2000.
[2]. Beeley, P.- Foundry Technology. Butterworld Heinemann, 2001.
[3]. Dinsdale, A.T., Quested P.N.-The viscosity of aluminium and its alloys-a review of data and models. 1st Fe-Al Meeting, Boulder, 22.06.2003, p. 1-10.
[4]. Tinklepaugh, James R.-Cermets. Reinhold Publishing Corporation, 1960.
[5]. Batchelor, G.K.-An Introduction To Fluid Dynamics. Cambridge University Press, 1967.
[6]. Ehrig, R., Nowak, U., Oeverdieck, L. & Deuflhard, P.- Advanced extrapolation methods, for large scale differential algebraic problems. In High Performance Scientific and Engineering, Computing. Lecture Notes in Computational Science and Engineering, vol. 8 (ed. H.-J.Bungartz, F. Durst & C. Zenger), pp. 233–244. Springer., 1999.
[7]. Rosendahl, U.-Uber die Grenzen des stationaren Flussigkeitstransportes in offenen Kapillarkanalen. Cuvillier Verlag Gottingen, 2007.
[8]. Rosendahl, U. & Dreyer, M. E.-Design and performance of an experiment for the investigation of open capillary channel flows. Exps. Fluids 42, 683-696, 2007.
[9]. Rosendahl, U., Ohlhoff, A. & Dreyer, M. E.-Choked flows in open capillary channels: theory, experiment and computations. J. Fluid Mech. 518, 187-214, 2004.
Fascicle_9_1_2010
Published
2010-03-15
How to Cite
1.
MARGINEAN I, VERDES B-A, COCOLAS S-A. Theoretical Study Regarding the Flow Conditions for Alloys through Thin Channels. The Annals of “Dunarea de Jos” University of Galati. Fascicle IX, Metallurgy and Materials Science [Internet]. 15Mar.2010 [cited 29Apr.2024];33(1):10-5. Available from: https://www.gup.ugal.ro/ugaljournals/index.php/mms/article/view/3013
Issue
Vol 33 No 1 (2010)
Section
Articles

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