EVALUATION OF TEMPERATURE DISTRIBUTION AND FLUID FLOW IN FUSION WELDING PROCESSES

محتوى المقالة الرئيسي

Ihsan Y. Hussain
Salah Sabeeh Abed-AlKareem

الملخص

A theoretical study of heat transfer and fluid flow phenomena in welding process has been carried out in the present work. The study involved the numerical solution of the transient NavierStokes and Energy equations of the weld pool region by using Finite Difference Method. The electromagnetic force field and buoyancy were included in the formulation The stream-vorticity formulation was used in the mathematical model. The numerical solution is capable of calculating the vorticity, stream function, velocity, temperature, and the interface movement of the weld pool in Gas Metal Arc Welding (GMAW). The model can be used to solve the Gas Tungesten Arc Welding (GTAW) problem. A numerical calculations algorithm was developed to carry out the numerical solution. The numerical results showed that the finger penetration phenomena occurs in the Gas Metal Arc weld is adequately explained through the application of the model. It is found that the frequency of spray transfer is a dominant factor in addition to shape of the weld pool geometry. A
verification of numerical results was made through a comparison with a previous work, the agreement was good, confirming the capability and reliability of the proposed numerical algorithm in calculating fluid flow and heat transfer in Gas Metal Arc weld pools.

تفاصيل المقالة

كيفية الاقتباس
"EVALUATION OF TEMPERATURE DISTRIBUTION AND FLUID FLOW IN FUSION WELDING PROCESSES " (2007) مجلة الهندسة, 13(01), ص 1355–1372. doi:10.31026/j.eng.2007.01.15.
القسم
Articles

كيفية الاقتباس

"EVALUATION OF TEMPERATURE DISTRIBUTION AND FLUID FLOW IN FUSION WELDING PROCESSES " (2007) مجلة الهندسة, 13(01), ص 1355–1372. doi:10.31026/j.eng.2007.01.15.

تواريخ المنشور

المراجع

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Gukan, R., Guha, B. and Sundararajan, T., “Finite Element Modeling of Fluid Flow on Weld Pentration of Stationary Gas-Tungsten-Arc Weld Pool”, Department of Mechanical Engineering – IIT Madras. Chemmai-600 036 , 2001, p.p. 279-285.

Kim, J. W. and Na, S. J., “A Study on The Three-Dimensional Analysis of Heat and Fluid Flow in Gas Metal Arc Welding Using Boundary-Fitted Coordinates”, Journal of Engineering for Industry, Vol. 116, February 1994, p.p. 78-85.

Oreper, G. M. and Szekely, J., “A Comprehensive Representation of Transient Weld Pool Development in Spot Welding Operations”, Metallurgical Transactions A, Vol. 18A, July 1987, p.p. 1325.

Petrovic, Z. and Stupper, S., “Computational Fluid Dynamics One”, Mechanical Engineering Falculty, Belgrade, 1996.

Salah S. Abed-Alkreem , " Evaluation of Temperature Distribution and Fluid Flow in Fusion Welding Processes ", P.H.D Thesis, The College of Engineering , Mechanical Engineering Dept. ,University of Baghdad, March 2005.

Torrance, K. E., “Numerical Method in Heat Transfer”, Handbook of Heat Transfer Fundamentals, McGraw-Hill, second edition, 1985.

Tsai, M. C. and Kou, S., “Electromagnetic Force Induced Convection in Weld Pools With A Free Surface”, Welding Journal, Vol. 69, No. 6, June 1990, p.p. 241S-246S.

Tsao, K. C. and Wu, C. S., “Fluid Flow and Heat Transfer in GMA Weld Pools”, Welding Journal, March 1988, p.p. 70S-75S.

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