A Study of Numerical Modelling of Liquid Filler Flow within Braze Gap on Vacuum Brazing

Pei Yao Li; Zhi Shui Yu

doi:10.4028/www.scientific.net/MSF.704-705.733

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HomeMaterials Science ForumMaterials Science Forum Vols. 704-705A Study of Numerical Modelling of Liquid Filler...

A Study of Numerical Modelling of Liquid Filler Flow within Braze Gap on Vacuum Brazing

Abstract:

A three-dimensional computer code which is employed for modelling of fluid flow and heat transfer during braze gap filling on vacuum brazing has been developed by using SIMPLE algorithm and VOF method. By the aid of this program, the flow behavior of liquid filler metal, the location and wave of the free surface, as well as the temperature distribution can be simulated. In order to verify the computational results, experiments of vacuum brazing thin plate weldment with 0.03mm and 0.2mm braze gap have been made respectively. The result of comparisons between calculated data and experimental data show that the brazing gap is one of the most important technological parameters that influences the flow pattern of liquid filler metal during braze gap filling and the brazing seam formation process significantly, and the 3-D modelling of braze gap filling are rather accurate and reliable, thereby providing a useful and effective analytic tool for brazing technological design. Keywords: vacuum brazing; brazing gap filling; numerical modelling;

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Periodical:

Materials Science Forum (Volumes 704-705)

Pages:

733-738

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.704-705.733

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Online since:

December 2011

Authors:

Pei Yao Li, Zhi Shui Yu

Keywords:

Brazing Gap Filling, Numerical Modeling, Vacuum Brazing

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References

[1] F.M. Hosking et al: Thermal and fluid flow brazing simulation. in 'Proc. 1st Advanced brazing and soldering technologies IBSC conf. Eds. P.T. Vianco and M. Singh; Albuquerque, NM, (2000).

Google Scholar

[2] A.C. Hall et al: Visual observations of liquid filler metal flow within braze gap. Science and Technology of Welding and Joining, 2004, Vol. 9(2), pp.95-102.

DOI: 10.1179/136217104225017017

Google Scholar

[3] WU Chuansong, CAO zhenming, WU Lin: Acta Metallurgics Sinica, Vol. 28(1992), p. B427.

Google Scholar

[4] C.S. Wu, J. Chen, Y.M. Zhang: Computational Materials Science, Vol. 39(2007), p.635.

Google Scholar

[5] W. Zhang, G.G. Roy, J.W. Elmer, et al. Journal of Applied Physics, Vol. 93(2003), p.3022.

Google Scholar

[6] C.H. Kim, W. Zhang, T. DebRoy. Journal of Applied Physics, Vol. 94(2003), p.2667.

Google Scholar

[7] Z.S. Yu, R.F. Li, Y.Y. Zhou, et al. Materials Science and Technology, Vol. 21(2005), p.880.

Google Scholar

[8] LI Ruifeng, YU Zhishui, QI Kai. Numerical simulation and analysis of flow field in TIG arc brazed filler metal droplet. Materials Science Forum, vol. 575-78 (2008), pp.716-721.

DOI: 10.4028/www.scientific.net/msf.575-578.716

Google Scholar

[9] S.V. Patankar, Numerical Heat Transfer and Fluid Flow, Hemisphere Publishing Corporation, New York, (1980).

Google Scholar

[10] W.Q. Tao. Numerical Heat Transfer, Xi'an Jiao Tong University Press, Xi'an, China, (1988).

Google Scholar

[11] R.D. Pehlke et al. Computer Simulation of Solidification, American Foundrymen's Society, Inc. Des Plaines, Illinois, (1976).

Google Scholar

[12] S.V. Patankar, D.B. Spalding. A Calculation Procedure for Heat, Mass and Momentum Transfer in Three_Dimensional Parabolic Flows, Intern. J. Heat and Mass Transfer, Vol. 15(1972), pp.1787-1806.

DOI: 10.1016/0017-9310(72)90054-3

Google Scholar