Fluid flow and weld penetration in stationary arc welds View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1985-02

AUTHORS

Sindo Kou, D. K. Sun

ABSTRACT

Weld pool fluid flow can affect the penetration of the resultant weld significantly. In this work, the computer simulation of weld pool fluid flow and its effect on weld penetration was carried out. Steady-state, 2-dimensional heat and fluid flow in stationary arc welds were computed, with three driving forces for fluid flow being considered: the buoyancy force, the electromagnetic force, and the surface tension gradient at the weld pool surface. The computer model developed agreed well with available analytical solutions and was consistent with weld convection phenomena experimentally observed by previous investigators and the authors. The relative importance of the influence of the three driving forces on fluid flow and weld penetration was evaluated, and the role of surface active agents was discussed. The effects of the thermal expansion coefficient of the liquid metal, the current density distribution in the workpiece, and the surface tension temperature coefficient of the liquid metal on weld pool fluid flow were demonstrated. Meanwhile, a new approach to free boundary problems involving simultaneous heat and fluid flow was developed, and the effort of computation was reduced significantly. More... »

PAGES

203-213

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf02816047

DOI

http://dx.doi.org/10.1007/bf02816047

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1025985433


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